What it does for your water
The HYCHEK-21W Hardness Test Kit is a drop test kit, with 145 tests.
Drop-count kits give hardness as a number: add reagent a drop at a time until the color changes, and each drop is a set number of grains per gallon or ppm.
Softeners are sized in grains per gallon; divide a mg/L or ppm reading by 17.1. The hardness converter does it for you.
The listing also gives tests per pack 145; model HYCHEK-21W.
The listing gives 21 in 1 test kit, dropper & test tube, user guide in the box.
Is it the right unit for your house?
Choose it when
- Sizing a softener
- Checking a softener is working
Pass on it when
- Lab-grade analysis
Where it wins and where it loses
Wins
- Drop test kit
- 145 tests
Loses
- Takes a few minutes per test
Limits to know about
- Figures are the maker's or seller's own; check fit and capacity against your water test and your equipment's manual.
Maker's figures
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | HYCHEK-21W | Retailer |
|---|---|---|
| Tests per kit | 145 | Retailer |
Units to weigh against it
Other hardness testing in the catalog
Final verdict
A sensible drop test kit for sizing a softener.
Where to buy
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