
Apera Instruments
Apera Instruments GroStar Series GS4-P pH/EC/500ppm/700ppm/ORP 6-in-1 Combo Pen Tester Kit with Replaceable Double-Junction pH/EC Probe and ORP Probe for Hydroponics Water Quality Testing, Gen II

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All-New 20 in 1 Drinking Water Testing Kit 120 Strips, Home Tap and Well Water Test Kit for Hardness, Lead, Iron, Copper, Chlorine, Fluoride

Apera Instruments
APERA INSTRUMENTS AI316 Premium Series PC60 5-in-1 Waterproof pH/EC (Conductivity) /TDS (ppm) /Salinity (ppt) /Temp. Multi-Parameter Pocket Tester Kit

Apera Instruments
Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display

VARIFY
23%OFF
Varify Water Hardness Test Kit - Water Testing Kit for Home, Drinking, Well, Spa, Swimming Pool, Softener, Dishwasher & More - Hard Water Test Strips for Calcium, Magnesium etc (0-425 pmm, 150 Strips)

Apera Instruments
APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

HACH
Hach DPD Free Chlorine Reagent Powder Pillows, 10 mL, Pack of 1000, USEPA Accepted, Drinking Water and Wastewater Analysis, Boric Acid Free, 0.02-2.00 mg/L Cl₂, 2105528

VARIFY
27%OFF
Instant 4-in-1 TDS Meter Digital Water Tester for Drinking Water | Accurate 0–9990 PPM EC & Temp Readings | Ideal for RO Systems, Aquariums, Pools – Built for Professionals, Easy for Anyone

HEVEIS
21%OFF
21-in-1 Home Drinking Water Testing Kit - 120 Strips + 4 Bacteria Tests - Tap and Well Water Test Kit, Easy to Test and Read for Hardness, Lead, Iron, Fluoride, pH, Copper, Bacteria and More
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