(Hydrosulfite Test Papers, Test Strips)


Reduction Test Papers
CARVATŪ YELLOW PAPERS™ are invaluable in the textile dyeing industry for the instant determination of the end point in the conversion of vat dyes to the leuco form. A vat dye bath properly set with excess hydrosulfite (sodium dithionate) and caustic soda turns this test paper a bright blue.

For the convenience of the dyer, the book contains 40 strips of Phenolphthalein paper for a fast determination of caustic.

They can also be used for the important checking of effluents and wash waters for pollution.

Item # 980001 per book (120 strips yellow paper, 40 strips Phenolphthalein paper 10 x 50 mm)     Price: $15.95 ea.
Item # 980002 per book (175 strips of yellow paper only 10 mm x 50 mm )                                  Price: $19.95 ea.

Link to Chemical Information - This page contains information on the chemical Sodium hydrosulfite including: 23 synonyms/identifiers; U.S. Code of Federal Regulations Title 49 Section 172 shipping regulations and 2 proper shipping names; USDOT 2004 Emergency Response Guidebook initial response information for 3 related materials.
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