What it does for your water
The USWatersystems.com 720-2401 Digital Water Tester is a digital tester, with 50 tests, reading 0-10 ppm.
Check what a digital tester measures: a TDS meter reads total dissolved solids, which is not the same as hardness.
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 range 0-10 ppm; tests per pack 50; model 720-2401.
The listing gives dimensions of 10 x 5 x 12 inches and a shipping weight of 1.6 lb.
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
- Digital tester
- 50 tests
Loses
- May not measure hardness directly
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 | 720-2401 | Retailer |
|---|---|---|
| Dimensions (seller) | 10 x 5 x 12 inches | Retailer |
| Product weight | 1.6 lb | Retailer |
| Tests per kit | 50 | Retailer |
| Range | 0-10 ppm | Retailer |
Units to weigh against it
Other hardness testing in the catalog
Final verdict
A sensible digital tester for sizing a softener.
Where to buy
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure



