$16.99
on Amazon
Where we mention this product
More Test kits
See all test kits
Varify Water Hardness Test Kit - Water Testing Kit for Home, Drinking, Well, Spa
$9.98
In 20 guides
JNW Direct Water Hardness Test Strips for Home Water - 150 Strips Kit
$8.99
In 12 guides
WeAQUA DoubleCheck Water Hardness Test Kit — 200 Strips with Sampler Cup
$9.97
In 5 guides
4-in-1 TDS Meter Digital Water Tester - TDS EC pH Temp
$8.99
In 4 guides