Category
Test kits
29 products — ordered by how often we mention them.
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Varify Water Hardness Test Kit - Water Testing Kit for Home, Drinking, Well, Spa
Default pick for first-time testers sizing a softener — 150 strips, 0–425 ppm range, under $10 · Know your gpg before you buy any system
$9.99
in 19 guides
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JNW Direct Water Hardness Test Strips for Home Water - 150 Strips Kit
Same specs as VARIFY (150 strips, 0–425 ppm) if you want a second brand or the first is out of stock · Bulk strips for repeated well-water checks
$9.99
in 11 guides
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4-in-1 TDS Meter Digital Water Tester - TDS EC pH Temp
Cheap meter to catch TDS creep before taste changes — replace based on data, not calendar. · ppm to gpg conversion
$8.99
in 4 guides
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VARIFY Instant 4-in-1 TDS Meter Digital Water Tester, 0-9990 PPM
30-second test of softener effectiveness — read TDS before and after the unit · Handheld TDS / EC / temp meter to verify your RO membrane is reducing dissolved solids within spec
$9.96
in 4 guides
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WeAQUA DoubleCheck Water Hardness Test Kit (200 strips)
Hardness + iron in one · Double-pad design narrows the read between 1 and 5 gpg — useful if your water is on the moderately-hard / hard border.
$9.97
in 4 guides
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Hach Total Hardness Test Kit, Model 5-EP (Drop Count EDTA)
Higher-range Hach drop kit for very hard water (20+ gpg) where the Model 5-B runs out of drops too quickly · ±0.5 gpg precision
$58.09
in 3 guides
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HM Digital TDS-3 Handheld TDS Meter
Post-softener verification — measures TDS to confirm ion exchange is working. NOT for initial hardness measurement · Quick TDS reading before you buy any system; industry-standard installer pen
$13.60
in 3 guides
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HoneForest TDS Meter, Digital Water Tester (TDS, EC, Temperature)
Alternative TDS meter that also measures conductivity and temperature — same softener-verification role as HM Digital · More accurate TDS reading for tight replacement timing on multi-stage RO.
$13.97
in 3 guides
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WeAQUA Water Hardness Test Kit — DoubleCheck 50 Strips
Cheapest option at $5.97 — dual-pad design lets you verify each reading; 50 strips, fine for a one-time test · Confirm campground hardness before sizing a softener; lowest cost-per-test
$5.98
in 3 guides
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Bestprod All-New 21-in-1 Drinking Water Testing Kit Strips, Home Tap and Well Water Test Kit
Confirms pH, hardness, alkalinity, iron, copper, lead, and chloride in one strip · One-pass baseline on a private well — iron, hardness, pH, more
See Amazon
in 2 guides
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Hach Total Hardness Test Kit, Model 5-B, Drop Count Titration
Industry-standard drop-count titration — ±0.5 gpg accuracy for borderline cases and professional use · Drop-count titration for precise gpg when sizing a softener
$35.55
in 2 guides
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Apera Instruments AI316 PC60 Premium 5-in-1 pH/EC/TDS Tester
Well owners who need pH, EC, and TDS together
See Amazon
in 1 guide
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AquaChek TDS Test Strips (25-pack)
Quick TDS range check when a meter isn't handy
See Amazon
in 1 guide
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Bartovation Total Dissolved Iron Test Strips, 0-10 ppm, 25-Pack
Confirm iron ppm before you buy any treatment system
See Amazon
in 1 guide
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Digital pH Meter Tester Pen, 0.01 Accuracy, 0-14 pH Range, Pre-Calibrated
Get a 0.01-resolution pH reading at the tap in 30 seconds; needs buffer-solution calibration every few weeks.
See Amazon
in 1 guide
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EHM Alkaline pH Test Kit for Drinking Water (Drop Titration)
Drop-count titration gives a tighter alkalinity reading than strips when strip colors are ambiguous.
See Amazon
in 1 guide
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Hach Total Hardness Test Kit, Model 5-EP, Drop Count EDTA, 145401
Drop-count titration gives exact mg/L reading for system sizing
See Amazon
in 1 guide
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HEVEIS 21-in-1 Home Drinking Water Testing Kit (120 strips + 4 bacteria tests)
When signs could be hardness, iron, pH, or chlorine — triage 21 parameters in one pass before paying for a lab test.
$28.99
in 1 guide
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Industrial Test Systems 481012 SenSafe Manganese Water Test Strip Kit, 12 Tests
Rule manganese in or out when stains are black or brown, not orange
See Amazon
in 1 guide
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Safe Home 14-in-1 DIY Ultimate Drinking Water Test Kit
First-pass well panel covering lead, bacteria, hardness, pH, and nitrates before you buy any stage
$29.99
in 1 guide
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Safe Home DIY Bacteria in Water Test Kit
Dedicated coliform screen when the general kit flags bacteria or you need a faster yes/no before UV
$14.99
in 1 guide
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SJ WAVE 22 in 1 Water Test Kits - 125 Strips Drinking Water Test Kit
Baseline multi-parameter check on well or city tap before buying treatment
$21.99
in 1 guide
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Total Water Hardness Test for Pool, Aquarium, and Drinking Water
Confirm exact gpg before changing hardness settings
$34.99
in 1 guide
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Varify 17-in-1 Complete Drinking Water Test Kit, 100 Strips
Checking hardness and other screening parameters before deciding between a softener, RO, or lab test
$26.97
in 1 guide
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Varify 7-in-1 Pool Test Strips (150 Strips) — pH, Alkalinity, Hardness, Chlorine, Bromine, CYA
One dip-and-read strip covers pH + alkalinity + hardness + chlorine in 15 seconds — best one-shot baseline.
See Amazon
in 1 guide
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VIVOSUN Digital pH Meter TDS EC Meter for Water
Comparing conductivity-based TDS readings before and after an RO system, not a substitute for a hardness test
$15.19
in 1 guide
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WANJAO 10ML Hard Water Test Kit, Rapid Quality Testing
Drops under $12 — for one-off pre-purchase check
$11.99
in 1 guide
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Water Hardness Test Kit with 5-Pads (150 Strips)
First kit in the drawer — test cold tap before and after a manual regen
$8.99
in 1 guide
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Water Hardness Test Kit, 150 Strips — Double Color Pads with Sample Tube
Quickest way to get your gpg before shopping for a softener
See Amazon
in 1 guide