Dip in Water and remove immediately, Hold level for 10 ...
Arsenic sometimes naturally occurs in water and can be ...
PurTest® BACTERIA, NITRATE, NITRITE test kits is laboratory ...
PurTest® Test Strips for Hardness (illustrated), Iron, ...
Treating for lead contamination is critical since lead ...
Take a test strip from packet, dip in water for 2 seconds, ...
PurTest® PESTICIDE allows you to easily to detect two of ...
The ASTM Committe on water has recommended the SDI test or ...
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