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WaterTestingKits.com
Water-testing kits for drinking water (Test Assured). The homepage featured a 4-pack school and experiment kit and a classroom kit with a TDS meter. See today's prices on their site.
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4-pack school and experiment kit
See price on WaterTestingKits.com
Prices may change — check the brand's site
Affiliate link: ASM may earn a commission
Classroom kit with a TDS meter
See price on WaterTestingKits.com
Prices may change — check the brand's site
Affiliate link: ASM may earn a commission