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\u064a\u062c\u0628 \u0623\u0646 \u062a\u0633\u062a\u0648\u0641\u064a \u0627\u0644\u0635\u0628\u063a\u0629 \u0627\u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0628\u0635\u0631\u064a\u0629 \u0648\u0627\u0644\u062a\u0642\u0646\u064a\u0629 \u0639\u0644\u0649 \u062d\u062f \u0633\u0648\u0627\u0621.<\/p>\n\n\n\n \u0648\u0645\u0646 \u0628\u064a\u0646 \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0645\u0647\u0645\u0629 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n\n\n\n \u0644\u0627 \u064a\u0639\u0646\u064a \u0627\u0644\u0644\u0648\u0646 \u0627\u0644\u0632\u0627\u0647\u064a \u0628\u0627\u0644\u0636\u0631\u0648\u0631\u0629 \u0623\u0646 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u0637\u0628\u064a \u0645\u0646\u0627\u0633\u0628.<\/p>\n\n\n\n \u0642\u062f \u0644\u0627 \u062a\u0648\u0641\u0631 \u0628\u0639\u0636 \u0627\u0644\u0623\u0635\u0628\u0627\u063a \u0627\u0644\u062a\u064a \u062a\u062a\u0645\u064a\u0632 \u0628\u0643\u062b\u0627\u0641\u0629 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\u0627\u0644\u062a\u0646\u0638\u064a\u0645\u064a.<\/p>\n\n\n\n \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629\u060c \u0642\u062f \u062a\u062e\u0636\u0639 \u0627\u0644\u0645\u0636\u0627\u0641\u0627\u062a \u0627\u0644\u0644\u0648\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0628\u0639\u0636 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0637\u0628\u064a\u0629 \u0644\u0623\u062d\u0643\u0627\u0645 \u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u063a\u0630\u0627\u0621 \u0648\u0627\u0644\u062f\u0648\u0627\u0621 (FDA) \u0627\u0644\u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0627\u0644\u0645\u0636\u0627\u0641\u0627\u062a \u0627\u0644\u0644\u0648\u0646\u064a\u0629. \u0648\u062a\u0634\u064a\u0631 \u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u063a\u0630\u0627\u0621 \u0648\u0627\u0644\u062f\u0648\u0627\u0621 (FDA) \u0625\u0644\u0649 \u0623\u0646 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\u0627\u0644\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u062a\u0627\u0644\u064a\u0629:<\/p>\n\n\n\n \u062a\u062d\u062a\u0641\u0638 \u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u063a\u0630\u0627\u0621 \u0648\u0627\u0644\u062f\u0648\u0627\u0621 \u0627\u0644\u0623\u0645\u0631\u064a\u0643\u064a\u0629 (FDA) \u0628\u0642\u0648\u0627\u0626\u0645 \u0648\u0642\u064a\u0648\u062f \u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0627\u062a \u0627\u0644\u0645\u062d\u062f\u062f\u0629 \u0644\u0643\u0644 \u0645\u0627\u062f\u0629 \u0645\u0644\u0648\u0646\u0629 \u0645\u0636\u0627\u0641\u0629 \u0639\u0644\u0649 \u062d\u062f\u0629.<\/p>\n\n\n\n \u064a\u0646\u0628\u063a\u064a \u0639\u0644\u0649 \u0641\u0631\u064a\u0642 \u0627\u0644\u0631\u0642\u0627\u0628\u0629 \u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u0647\u0648\u064a\u0629 \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0644\u0644\u0635\u0628\u063a\u0629\u060c \u0648\u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u0642\u0635\u0648\u062f\u060c \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0632\u060c \u0648\u0645\u062f\u0649 \u0645\u0644\u0627\u0645\u0633\u062a\u0647\u0627 \u0644\u0644\u0645\u0631\u0636\u0649\u060c \u0648\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0633\u0648\u0642 \u0627\u0644\u0645\u0639\u0645\u0648\u0644 \u0628\u0647\u0627 \u0642\u0628\u0644 \u0627\u0644\u0645\u0648\u0627\u0641\u0642\u0629 \u0639\u0644\u0649 \u062a\u0631\u0643\u064a\u0628\u0629 \u0627\u0644\u0644\u0648\u0646.<\/p>\n\n\n\n \u062a\u0624\u062f\u064a \u0625\u0636\u0627\u0641\u0629 \u0635\u0628\u063a\u0629 \u0625\u0644\u0649 \u062a\u0643\u0648\u064a\u0646 \u062a\u0631\u0643\u064a\u0628\u0629 \u0645\u0627\u062f\u064a\u0629 \u062c\u062f\u064a\u062f\u0629 \u0645\u0646 \u0645\u0646\u0638\u0648\u0631 \u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u0645\u062e\u0627\u0637\u0631.<\/p>\n\n\n\n \u064a\u0646\u0628\u063a\u064a \u0623\u0646 \u064a\u0623\u062e\u0630 \u0627\u0644\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0628\u064a\u0648\u0644\u0648\u062c\u064a \u0641\u064a \u0627\u0644\u0627\u0639\u062a\u0628\u0627\u0631 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n\n\n\n \u062a\u0648\u0641\u0631 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 ISO 10993-18 \u0625\u0637\u0627\u0631\u064b\u0627 \u0639\u0645\u0644 \u0644\u062a\u062d\u062f\u064a\u062f \u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u062c\u0647\u0627\u0632 \u0627\u0644\u0637\u0628\u064a\u060c \u0648\u0642\u064a\u0627\u0633 \u0643\u0645\u064a\u0627\u062a\u0647\u0627 \u0639\u0646\u062f \u0627\u0644\u0636\u0631\u0648\u0631\u0629. \u0623\u0645\u0627 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 ISO 10993-17 \u0641\u062a\u062a\u0646\u0627\u0648\u0644 \u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0645\u062e\u0627\u0637\u0631 \u0627\u0644\u0633\u0645\u064a\u0629 \u0644\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0645 \u062a\u062d\u062f\u064a\u062f\u0647\u0627.<\/p>\n\n\n\n \u0642\u062f \u062a\u0633\u0627\u0647\u0645 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u0645\u062a\u0648\u0641\u0631\u0629 \u0639\u0646 \u0627\u0644\u0645\u0648\u0631\u062f \u0641\u064a \u0627\u0644\u062d\u062f \u0645\u0646 \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u063a\u064a\u0631 \u0627\u0644\u0636\u0631\u0648\u0631\u064a\u0629\u060c \u0644\u0643\u0646 \u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0630\u0627\u062a \u0635\u0644\u0629 \u0628\u0627\u0644\u0645\u0643\u0648\u0646 \u0627\u0644\u0645\u0644\u0648\u0651\u0646 \u0648\u0627\u0644\u0645\u0639\u0627\u0644\u062c \u0648\u0627\u0644\u0645\u0639\u0642\u0645 \u0628\u0627\u0644\u0636\u0628\u0637.<\/p>\n\n\n\n \u0642\u062f \u062a\u062a\u0648\u0641\u0631 \u0628\u0627\u0644\u0641\u0639\u0644 \u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0639\u0646 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0628\u064a\u0648\u0644\u0648\u062c\u064a\u0629 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0645\u0627\u062f\u0629 LSR \u0627\u0644\u0637\u0628\u064a\u0639\u064a\u0629 \u0623\u0648 \u0627\u0644\u0634\u0641\u0627\u0641\u0629. \u0648\u0642\u062f \u062a\u0624\u062f\u064a \u0625\u0636\u0627\u0641\u0629 \u0645\u0627\u062f\u0629 \u0645\u0644\u0648\u0646\u0629 \u0625\u0644\u0649 \u062a\u063a\u064a\u064a\u0631:<\/p>\n\n\n\n \u0642\u062f \u064a\u0638\u0644 \u0627\u0644\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0628\u064a\u0648\u0644\u0648\u062c\u064a \u0627\u0644\u0633\u0627\u0628\u0642 \u0645\u0635\u062f\u0631\u064b\u0627 \u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u062f\u0627\u0639\u0645\u0629 \u0645\u0641\u064a\u062f\u0629\u060c \u0644\u0643\u0646 \u064a\u062c\u0628 \u062a\u0648\u062b\u064a\u0642 \u0625\u0636\u0627\u0641\u0629 \u0627\u0644\u0635\u0628\u063a\u0629 \u0648\u062a\u0642\u064a\u064a\u0645\u0647\u0627.<\/p>\n\n\n\n \u064a\u0646\u0628\u063a\u064a \u0623\u0646 \u064a\u062d\u062f\u062f \u0627\u0644\u062a\u0642\u064a\u064a\u0645 \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0627\u0644\u0623\u062f\u0644\u0629 \u0627\u0644\u062d\u0627\u0644\u064a\u0629 \u0644\u0627 \u062a\u0632\u0627\u0644 \u0633\u0627\u0631\u064a\u0629 \u0623\u0645 \u0623\u0646 \u0647\u0646\u0627\u0643 \u062d\u0627\u062c\u0629 \u0625\u0644\u0649 \u0625\u062c\u0631\u0627\u0621 \u0645\u0632\u064a\u062f \u0645\u0646 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629 \u0623\u0648 \u0627\u0644\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0633\u0645\u064a \u0623\u0648 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0628\u064a\u0648\u0644\u0648\u062c\u064a\u0629.<\/p>\n\n\n\n \u062a\u0634\u0645\u0644 \u0627\u0644\u0645\u062e\u0627\u0637\u0631 \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629 \u0627\u0644\u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0627\u0644\u0646\u0642\u0627\u0621 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n\n\n\n \u0642\u062f \u064a\u062a\u0637\u0627\u0628\u0642 \u0644\u0648\u0646 \u0645\u0627 \u0628\u0635\u0631\u064a\u064b\u0651\u0627 \u0645\u0639 \u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0645\u0639\u062a\u0645\u062f\u060c \u0645\u0639 \u0623\u0646\u0647 \u0644\u0627 \u064a\u0632\u0627\u0644 \u064a\u0633\u062a\u062e\u062f\u0645 \u062a\u0631\u0643\u064a\u0628\u0629 \u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629 \u062e\u0627\u0637\u0626\u0629.<\/p>\n\n\n\n \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0637\u0628\u064a\u0629\u060c \u0641\u0625\u0646 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0647\u0648\u064a\u0629 \u0648\u0625\u0645\u0643\u0627\u0646\u064a\u0629 \u0627\u0644\u062a\u062a\u0628\u0639 \u0644\u0627 \u064a\u0642\u0644\u0627\u0646 \u0623\u0647\u0645\u064a\u0629 \u0639\u0646 \u0627\u0644\u0645\u0638\u0647\u0631.<\/p>\n\n\n\n \u062a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0637\u0628\u064a\u0629 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0628\u0648\u0644\u064a\u0645\u0631 \u0627\u0644\u0644\u064a\u0646 (LSR) \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0628\u0627\u0644\u062a\u0636\u0641\u064a\u0641 \u0627\u0644\u0625\u0636\u0627\u0641\u064a \u0627\u0644\u0645\u062d\u0641\u0632 \u0628\u0627\u0644\u0628\u0644\u0627\u062a\u064a\u0646.<\/p>\n\n\n\n \u0642\u062f \u062a\u062a\u062f\u0627\u062e\u0644 \u0628\u0639\u0636 \u0627\u0644\u0645\u0644\u0648\u062b\u0627\u062a \u0645\u0639 \u062a\u0641\u0627\u0639\u0644 \u0627\u0644\u062a\u0635\u0644\u0628\u060c \u0645\u0645\u0627 \u064a\u0624\u062f\u064a \u0625\u0644\u0649:<\/p>\n\n\n\n Potential contamination sources may include unsuitable pigments, sulfur-containing materials, amines, lubricants, cleaning agents, gloves, adhesives, and residues from other rubber-processing operations.<\/p>\n\n\n\n The colorant should be specifically assessed for compatibility with the selected platinum-cured LSR.<\/p>\n\n\n\n The pigment loading level affects both appearance and material behavior.<\/p>\n\n\n\n Insufficient colorant may produce:<\/p>\n\n\n\n Excessive colorant may contribute to:<\/p>\n\n\n\n The approved formulation should define the colorant concentration and acceptable dosing tolerance.<\/p>\n\n\n\n Operators should not adjust the shade during production by visually adding more pigment without documented approval.<\/p>\n\n\n\n LSR is frequently translucent, so the apparent color can change with material thickness.<\/p>\n\n\n\n A thin membrane may appear much lighter than a thick seal molded from the same compound.<\/p>\n\n\n\n Color appearance may also be affected by:<\/p>\n\n\n\n Color approval plaques should therefore represent the production part\u2019s thickness, texture, and base material as closely as possible.<\/p>\n\n\n\n A thick, flat laboratory plaque may not accurately predict the appearance of a thin medical valve or transparent overmold.<\/p>\n\n\n\n A verbal description such as \u201cmedical blue\u201d or \u201clight gray\u201d is not precise enough for production control.<\/p>\n\n\n\n The specification should use a measurable color system.<\/p>\n\n\n\n The CIE La<\/em>b* color space defines color through:<\/p>\n\n\n\n ISO\/CIE 11664-4:2019 defines the CIE 1976 La<\/em>b* color space.<\/p>\n\n\n\n Color difference can be evaluated using a defined Delta E method. ISO\/CIE 11664-6:2022 specifies the CIEDE2000 color-difference formula.<\/p>\n\n\n\n The purchase specification should state which color-difference formula is required. A limit written only as \u201cDelta E below 1.0\u201d is incomplete unless the method, instrument settings, and measurement conditions are also defined.<\/p>\n\n\n\n A complete color specification may include:<\/p>\n\n\n\n These settings should be consistent between the customer, material supplier, colorant supplier, and molding factory.<\/p>\n\n\n\n Instrumental color values are important, but they may not capture every visually significant difference.<\/p>\n\n\n\n Visual inspection can identify:<\/p>\n\n\n\n Visual approval should be performed under controlled lighting rather than beside a window or under mixed factory lighting.<\/p>\n\n\n\n The inspection procedure should define:<\/p>\n\n\n\n Instrumental measurement and visual evaluation should be used together.<\/p>\n\n\n\n A digital image, computer monitor, or printed Pantone page should not be the final production standard for a translucent silicone component.<\/p>\n\n\n\n The approved standard should ideally be a molded physical sample made with:<\/p>\n\n\n\n The standard should be identified, protected from light and contamination, and replaced according to a defined control procedure.<\/p>\n\n\n\n A master standard can be stored under controlled conditions, while working standards are used on the production floor.<\/p>\n\n\n\n Provide the color supplier with:<\/p>\n\n\n\n Prepare several candidate shades using the approved base silicone.<\/p>\n\n\n\n Record:<\/p>\n\n\n\n Laboratory mixing may not reproduce production appearance.<\/p>\n\n\n\n Samples should be molded using representative:<\/p>\n\n\n\n Check whether the color system affects:<\/p>\n\n\n\n Evaluate samples before and after:<\/p>\n\n\n\n The relevant methods depend on the finished device.<\/p>\n\n\n\n Certain medical LSR grades are marketed with compatibility data for steam, gamma, electron beam, and ethylene oxide sterilization, but performance remains grade- and application-specific.<\/p>\n\n\n\n After approval, lock:<\/p>\n\n\n\n The final formulation should receive a unique internal material code.<\/p>\n\n\n\n Sterilization can affect the appearance of colored silicone.<\/p>\n\n\n\n Potential changes include:<\/p>\n\n\n\n The amount of change can depend on:<\/p>\n\n\n\n A color system should not be approved based only on unsterilized samples when the final product is supplied sterile.<\/p>\n\n\n\n ISO 11135 specifies requirements for developing, validating, and routinely controlling ethylene oxide sterilization processes for medical devices.<\/p>\n\n\n\n For color validation, evaluate samples:<\/p>\n\n\n\n The acceptance criteria should distinguish between an acceptable predictable shift and an uncontrolled change.<\/p>\n\n\n\n Radiation testing should include the minimum and maximum expected dose rather than only the nominal dose.<\/p>\n\n\n\n Consider:<\/p>\n\n\n\n The color may continue changing after radiation exposure, so measurement timing should be standardized.<\/p>\n\n\n\n Mechanical properties and color appearance should be evaluated separately. A component can remain mechanically functional while experiencing an unacceptable visual change.<\/p>\n\n\n\n Reusable medical devices may undergo repeated steam cycles.<\/p>\n\n\n\n Evaluate color after:<\/p>\n\n\n\n Repeated heat and moisture exposure can also affect gloss, transparency, surface deposits, bonding, and dimensional stability.<\/p>\n\n\n\n LSR is commonly supplied as two components that are metered and mixed before injection.<\/p>\n\n\n\n The colorant may be introduced through a controlled dosing system.<\/p>\n\n\n\n Important process variables include:<\/p>\n\n\n\n Insufficient mixing can produce streaks and local shade variation.<\/p>\n\n\n\n Excessive material residence time may create processing instability or cured deposits inside the system.<\/p>\n\n\n\n Medical LSR color changes require controlled cleaning.<\/p>\n\n\n\n Residual pigment may remain in:<\/p>\n\n\n\n A light color produced after a dark color is particularly sensitive to contamination.<\/p>\n\n\n\n The manufacturer should define:<\/p>\n\n\n\n For highly sensitive applications, dedicated color equipment may be appropriate.<\/p>\n\n\n\n The same silicone formulation can appear different when molded against different tool finishes.<\/p>\n\n\n\n A polished surface may look:<\/p>\n\n\n\n A textured surface may look:<\/p>\n\n\n\n Color plaques should use the same or a representative mold finish.<\/p>\n\n\n\n Tool maintenance can also change surface appearance over time, so gloss and texture should be monitored where they are critical.<\/p>\n\n\n\n Post-curing may be used to reduce selected volatile residues or stabilize material properties.<\/p>\n\n\n\n It may also affect:<\/p>\n\n\n\n The approved color should be evaluated after the complete post-curing cycle.<\/p>\n\n\n\n Post-curing variables should include:<\/p>\n\n\n\n Changing the post-curing cycle can invalidate the approved color result.<\/p>\n\n\n\n A practical production plan may include:<\/p>\n\n\n\n Verify:<\/p>\n\n\n\n Check:<\/p>\n\n\n\n Monitor:<\/p>\n\n\n\n Confirm:<\/p>\n\n\n\n Color variation can occur during startup, material changes, pigment-lot changes, and process interruptions.<\/p>\n\n\n\n Sampling should therefore consider:<\/p>\n\n\n\n A single first-piece measurement may not adequately represent a long production run.<\/p>\n\n\n\n In multi-cavity molds, apparent color can differ because of:<\/p>\n\n\n\n Color qualification should include all cavities.<\/p>\n\n\n\n When possible, each cavity should be traceable so recurring differences can be investigated.<\/p>\n\n\n\n The pigment or masterbatch supplier may be asked to provide:<\/p>\n\n\n\n The exact documentation depends on the device and regulatory market.<\/p>\n\n\n\n ISO 13485:2016 specifies quality-management-system requirements intended for organizations involved in medical-device design and manufacturing.<\/p>\n\n\n\n Relevant controls for medical LSR color production include:<\/p>\n\n\n\n A quality-system certificate supports supplier qualification but does not approve a specific pigment or molded component.<\/p>\n\n\n\n Color systems are highly sensitive to changes.<\/p>\n\n\n\n The supplier should notify the customer before changing:<\/p>\n\n\n\n A change should be assessed for potential impact on:<\/p>\n\n\n\n A robust validation plan may compare:<\/p>\n\n\n\n The objective is to demonstrate that the color remains acceptable throughout the validated manufacturing and use conditions.<\/p>\n\n\n\n Possible causes include:<\/p>\n\n\n\n Possible causes include:<\/p>\n\n\n\n Possible causes include:<\/p>\n\n\n\n Possible causes include:<\/p>\n\n\n\n Possible causes include:<\/p>\n\n\n\n Possible causes include:<\/p>\n\n\n\n To request a quotation for a colored medical LSR component, provide:<\/p>\n\n\n\n Do not request only \u201cmedical blue silicone.\u201d The supplier needs measurable color, application, processing, and regulatory requirements.<\/p>\n\n\n\n Ask the LSR molding supplier:<\/p>\n\n\n\n Medical LSR color matching is a controlled material-development and validation activity\u2014not only a cosmetic adjustment.<\/p>\n\n\n\n A reliable color system requires:<\/p>\n\n\n\n The natural and colored versions of an LSR should not automatically be treated as equivalent.<\/p>\n\n\n\n The safest approach is to develop the color using the exact production material, mold representative components, apply the intended post-curing and sterilization processes, and validate both appearance and functional performance under the expected lifecycle conditions.<\/p>\n\n\n\n It should not be used without a documented assessment. The pigment, carrier, concentration, patient contact, sterilization method, and applicable regulatory requirements must be reviewed.<\/p>\n\n\n\n No. Supplier testing can support the evaluation, but the finished colored, processed, and sterilized component must be assessed for its intended use.<\/p>\n\n\n\n Not automatically. Adding pigment changes the formulation and may affect chemical characterization, biological evaluation, sterilization response, and mechanical properties.<\/p>\n\n\n\n Use an approved physical molded sample together with target L*, a*, and b* values, a defined Delta E formula, and controlled measurement conditions.<\/p>\n\n\n\n Translucent silicone allows light to pass through the material. Apparent color therefore changes with thickness, background, surface texture, and internal components.<\/p>\n\n\n\n Both may be required. The final acceptance condition should represent the product as supplied for use, including sterilization and aging when relevant.<\/p>\n\n\n\n The response depends on the base LSR, pigment, dose, packaging, and post-irradiation aging. The exact colored formulation should be tested at the validated minimum and maximum exposure.<\/p>\n\n\n\n Yes. An incompatible pigment, carrier, or contaminant may interfere with platinum curing. The complete color system should be qualified with the selected LSR.<\/p>\n\n\n\n Common causes include inadequate mixing, unstable pigment dosing, incomplete purging, pigment agglomeration, temperature variation, and contamination from a previous color.<\/p>\n\n\n\n Any change in pigment grade, supplier, carrier, formulation, concentration, or manufacturing site should require documented notification and technical assessment before use.<\/p>\n\n\n\n SEO Title:<\/strong> Medical LSR Color Matching: Pigments, Purity & Validation<\/p>\n\n\n\n Meta Description:<\/strong> Learn how to control medical LSR color matching through healthcare pigments, purity assessment, CIELAB measurement, sterilization testing and production validation.<\/p>\n\n\n\n URL Slug:<\/strong> TAGS:<\/strong> medical LSR color matching,medical silicone pigments,LSR color masterbatch,medical grade silicone colorant,LSR color validation,medical silicone purity,CIELAB silicone color,Delta E color matching,sterilization color change,colored medical silicone,medical LSR molding,healthcare silicone components<\/p>","protected":false},"excerpt":{"rendered":" Color matching for medical liquid silicone rubber is more complex than selecting a Pantone number and adding pigment to a standard LSR. The final appearance of a medical silicone component can be affected by the base LSR, pigment chemistry, pigment concentration, part thickness, translucency, mold finish, curing conditions, post-curing, sterilization, aging, lighting, and measurement method. […]<\/p>\n","protected":false},"author":1,"featured_media":2553,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[2018,2025,2021,2027,2017,2020,2024,2023,2026,2022,2007,2019],"class_list":["post-2551","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news","tag-cielab-silicone-color","tag-colored-medical-silicone","tag-delta-e-color-matching","tag-healthcare-silicone-components","tag-lsr-color-masterbatch","tag-lsr-color-validation","tag-medical-grade-silicone-colorant","tag-medical-lsr-color-matching","tag-medical-lsr-molding","tag-medical-silicone-pigments","tag-medical-silicone-purity","tag-sterilization-color-change"],"_links":{"self":[{"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/posts\/2551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/comments?post=2551"}],"version-history":[{"count":1,"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/posts\/2551\/revisions"}],"predecessor-version":[{"id":2554,"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/posts\/2551\/revisions\/2554"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/media\/2553"}],"wp:attachment":[{"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/media?parent=2551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/categories?post=2551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fhysilicone.com\/ar\/wp-json\/wp\/v2\/tags?post=2551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"https:\/\/www.fhysilicone.com\/wp-content\/uploads\/2026\/07\/Medical-LSR-Color-Matching-Pigments-Purity-Validation-1-1024x768.png\")
<\/figure>\n\n\n\n\u0644\u0645\u0627\u0630\u0627 \u064a\u064f\u0639\u062f \u0627\u0644\u0644\u0648\u0646 \u0639\u0627\u0645\u0644\u0627\u064b \u0645\u0647\u0645\u064b\u0627 \u0641\u064a \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0637\u0628\u064a\u0629 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0645\u0627\u062f\u0629 LSR<\/h2>\n\n\n\n
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\u0645\u0627 \u0627\u0644\u0645\u0642\u0635\u0648\u062f \u0628\u0645\u0637\u0627\u0628\u0642\u0629 \u0627\u0644\u0623\u0644\u0648\u0627\u0646 \u0641\u064a LSR \u0627\u0644\u0637\u0628\u064a\u0629\u061f<\/h2>\n\n\n\n
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\u0627\u0628\u062f\u0623 \u0628\u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0627\u0644\u0637\u0628\u064a \u0627\u0644\u0645\u0642\u0635\u0648\u062f<\/h2>\n\n\n\n
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\u0641\u0647\u0645 \u0646\u0638\u0627\u0645 \u0627\u0644\u0623\u0644\u0648\u0627\u0646 \u0627\u0644\u0643\u0627\u0645\u0644<\/h2>\n\n\n\n
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\u0644\u0645\u0627\u0630\u0627 \u062a\u064f\u0641\u0636\u0644 \u0645\u0644\u0648\u0646\u0627\u062a \u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0648\u0646 \u0627\u0644\u0645\u064f\u0634\u062a\u062a\u0629 \u0645\u0633\u0628\u0642\u064b\u0627<\/h2>\n\n\n\n
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\u0639\u0648\u0627\u0645\u0644 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0635\u0628\u063a\u0627\u062a<\/h2>\n\n\n\n
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\u0627\u0644\u0623\u0635\u0628\u0627\u063a \u0627\u0644\u0639\u0636\u0648\u064a\u0629 \u0648\u063a\u064a\u0631 \u0627\u0644\u0639\u0636\u0648\u064a\u0629<\/h2>\n\n\n\n
\u0627\u0644\u0623\u0635\u0628\u0627\u063a \u0627\u0644\u0639\u0636\u0648\u064a\u0629<\/h3>\n\n\n\n
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\u0627\u0644\u0623\u0635\u0628\u0627\u063a \u063a\u064a\u0631 \u0627\u0644\u0639\u0636\u0648\u064a\u0629<\/h3>\n\n\n\n
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\u0627\u0644\u0627\u0639\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0631\u0627\u0639\u064a\u0647\u0627 \u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u063a\u0630\u0627\u0621 \u0648\u0627\u0644\u062f\u0648\u0627\u0621 \u0627\u0644\u0623\u0645\u0631\u064a\u0643\u064a\u0629 (FDA) \u0628\u0634\u0623\u0646 \u0627\u0644\u0645\u0636\u0627\u0641\u0627\u062a \u0627\u0644\u0644\u0648\u0646\u064a\u0629 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0637\u0628\u064a\u0629<\/h2>\n\n\n\n
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\u0627\u0644\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0628\u064a\u0648\u0644\u0648\u062c\u064a \u0644\u0645\u0627\u062f\u0629 LSR \u0627\u0644\u0645\u0644\u0648\u0646\u0629<\/h2>\n\n\n\n
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\u0644\u0627 \u064a\u0639\u062a\u0628\u0631 \u0627\u0644\u0645\u0637\u0627\u0637 \u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0648\u0646\u064a \u0627\u0644\u0637\u0628\u064a\u0639\u064a (LSR) \u0648\u0627\u0644\u0645\u0637\u0627\u0637 \u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0648\u0646\u064a \u0627\u0644\u0645\u0644\u0648\u0646 (LSR) \u0645\u062a\u0643\u0627\u0641\u0626\u064a\u0646 \u062a\u0644\u0642\u0627\u0626\u064a\u064b\u0627<\/h2>\n\n\n\n
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\u0645\u062e\u0627\u0637\u0631 \u0627\u0644\u0646\u0642\u0627\u0621 \u0641\u064a \u0645\u0637\u0627\u0628\u0642\u0629 \u0623\u0644\u0648\u0627\u0646 \u0645\u0627\u062f\u0629 LSR \u0627\u0644\u0637\u0628\u064a\u0629<\/h2>\n\n\n\n
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\u062a\u062b\u0628\u064a\u0637 \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0628\u0627\u0644\u0628\u0644\u0627\u062a\u064a\u0646<\/h2>\n\n\n\n
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Color Concentration<\/h2>\n\n\n\n
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Translucency and Part Thickness<\/h2>\n\n\n\n
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Define the Color With Instrumental Values<\/h2>\n\n\n\n
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What to Include in a Color Specification<\/h2>\n\n\n\n
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Visual Approval Is Still Necessary<\/h2>\n\n\n\n
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Create a Physical Color Standard<\/h2>\n\n\n\n
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Color Matching Development Process<\/h2>\n\n\n\n
Phase 1: Define the Target<\/h3>\n\n\n\n
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Phase 2: Develop Laboratory Samples<\/h3>\n\n\n\n
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Phase 3: Mold Production-Representative Samples<\/h3>\n\n\n\n
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Phase 4: Evaluate Functional Properties<\/h3>\n\n\n\n
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Phase 5: Apply Sterilization and Aging<\/h3>\n\n\n\n
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Phase 6: Freeze the Formulation<\/h3>\n\n\n\n
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Sterilization-Related Color Change<\/h2>\n\n\n\n
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Ethylene Oxide Validation<\/h2>\n\n\n\n
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Radiation Validation<\/h2>\n\n\n\n
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Steam-Sterilization Validation<\/h2>\n\n\n\n
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Color Dosing and Mixing<\/h2>\n\n\n\n
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Preventing Cross-Contamination<\/h2>\n\n\n\n
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Mold Surface and Gloss<\/h2>\n\n\n\n
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Post-Curing Effects<\/h2>\n\n\n\n
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Production Color-Control Plan<\/h2>\n\n\n\n
Incoming Inspection<\/h3>\n\n\n\n
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Startup Approval<\/h3>\n\n\n\n
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In-Process Inspection<\/h3>\n\n\n\n
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\u0627\u0644\u0641\u062d\u0635 \u0627\u0644\u0646\u0647\u0627\u0626\u064a<\/h3>\n\n\n\n
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Sampling Frequency<\/h2>\n\n\n\n
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Cavity-to-Cavity Variation<\/h2>\n\n\n\n
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Documentation to Request<\/h2>\n\n\n\n
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Quality-System Controls<\/h2>\n\n\n\n
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Change Control<\/h2>\n\n\n\n
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Recommended Validation Matrix<\/h2>\n\n\n\n
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Common Color-Matching Problems<\/h2>\n\n\n\n
The Part Is Too Light<\/h3>\n\n\n\n
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The Part Is Too Dark<\/h3>\n\n\n\n
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The Color Is Uneven<\/h3>\n\n\n\n
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The Color Changes After Sterilization<\/h3>\n\n\n\n
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Instrumental Results Pass but the Part Looks Wrong<\/h3>\n\n\n\n
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The First Batch Passes but Later Batches Fail<\/h3>\n\n\n\n
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Information to Include in an RFQ<\/h2>\n\n\n\n
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Supplier Qualification Questions<\/h2>\n\n\n\n
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\u0627\u0644\u062e\u0644\u0627\u0635\u0629<\/h2>\n\n\n\n
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\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/h2>\n\n\n\n
Can standard industrial silicone pigment be used in a medical LSR component?<\/h3>\n\n\n\n
Does a USP Class VI pigment make the final component compliant?<\/h3>\n\n\n\n
Should a natural LSR and a colored LSR be considered the same material?<\/h3>\n\n\n\n
What is the best way to define an LSR color?<\/h3>\n\n\n\n
Why does the same color look different in thin and thick silicone parts?<\/h3>\n\n\n\n
Should color be measured before or after sterilization?<\/h3>\n\n\n\n
Can gamma radiation change the color of medical LSR?<\/h3>\n\n\n\n
Can the pigment affect LSR curing?<\/h3>\n\n\n\n
What causes color streaks in injection-molded LSR?<\/h3>\n\n\n\n
How should pigment substitutions be controlled?<\/h3>\n\n\n\n
SEO Information<\/h2>\n\n\n\n
\/medical-lsr-color-matching-pigments-purity-validation\/<\/code><\/p>\n\n\n\n