Description: Under the trade names of Dubl-Chek and Aqua-Chek, Sherwin Incorporated manufactures fluorescent penetrant and visible dye penetrant and related products used in the non-destructive testing of critical components in the aerospace and welding industries. Contact: Sherwin Inc., 5530 Borwick Ave., So. Gate, CA 90280, USA (562-831-6324; fax, 562-923-8370)
testing (2285) inspection (1802) liquid (448) dye (196) fluorescent (115) visible (32) non-destructive (28) nondestructive (17) penetrant (12) penetrants (4)
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