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very stable chemistry
A multi-parameter indicator with purple-to-green colour change for use in pre-vacuum sterilizers operating at 134°C for 3 minutes or longer
The test run number is marked off after each use
Colour change: Purple to Green
medical samples
WaterWorks™ Total Hardness Water Test Strips 0-1000ppm Options:Total Hardness Test Strips - Bottle of 50 very stable chemistryOverview A versatile water test strip for measuring total hardness either as ppm or grains per gallon. Accurate, reliable and easy to use with rapid results. Detection Range: 0, 40, 80, 120, 180, 250, 425, 1000 ppm (mg L) Or 0, 2, 5, 7, 11, 15, 25, 58 gpg Total Test Time: 3 Seconds Packaging:: Bottle of 50 Details Total Hardness test strips are perfect for service work, classroom demonstrations, or to give to customers instead of an expensive service
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