Water Hardness Testing(10)
Uses item details. Price when purchased online
Portable Determination of Water Hardness Kit - Materials for 40 Tests $63.99

$6399
current price $63.99Portable Determination of Water Hardness Kit - Materials for 40 Tests
Poolmaster Smart Test 6-Way Test Strips From $19.14

2 options
Available in additional 2 optionsFrom$1914
Poolmaster Smart Test 6-Way Test Strips
55 out of 5 Stars. 5 reviews
AquaChek 552244 6-in-1 Spa Hot Tub Easy to Use Test Strips Kit, 50 Strip Bottle $9.49

$949
current price $9.49AquaChek 552244 6-in-1 Spa Hot Tub Easy to Use Test Strips Kit, 50 Strip Bottle
214.9 out of 5 Stars. 21 reviews
Aquachek 541604A 7-in-1 Pool and Spa Test Strips with Color Chart Was $36.00

Aquachek 541604A 7-in-1 Pool and Spa Test Strips with Color Chart
464.6 out of 5 Stars. 46 reviews
AquaChek 521252A 4-in-1 Total Bromine Red Test Strips - 50 Count

AquaChek 521252A 4-in-1 Total Bromine Red Test Strips - 50 Count
144.4 out of 5 Stars. 14 reviews
Aquachek Select 7-in-1 Test Strips for Swimming Pools, 50 Strips $43.23

$4323
current price $43.23Aquachek Select 7-in-1 Test Strips for Swimming Pools, 50 Strips
AquaChek 541640 Select Refill Swimming Pool and Spa 50 Chemical Test Strips $14.99

$1499
current price $14.99AquaChek 541640 Select Refill Swimming Pool and Spa 50 Chemical Test Strips
44 out of 5 Stars. 4 reviews
Leisure Time 45005A Spa and Hot Tub Bromine 4 Way Test Strips (50 Count) $18.95

$1895
current price $18.95Leisure Time 45005A Spa and Hot Tub Bromine 4 Way Test Strips (50 Count)
74.7 out of 5 Stars. 7 reviews
AquaChek 521253-02 Red Total Bromine Test Strips for Swimming Pools, 50-Count, 2-Pack

AquaChek 521253-02 Red Total Bromine Test Strips for Swimming Pools, 50-Count, 2-Pack
Other options to consider(2)
Pool Mate Calcium Increaser 8 Lbs

2 options
Available in additional 2 optionsPool Mate Calcium Increaser 8 Lbs
84.5 out of 5 Stars. 8 reviews
Spa Choice Increase Calcium for Spas and Hot Tubs

3 options
Available in additional 3 optionsSpa Choice Increase Calcium for Spas and Hot Tubs
15 out of 5 Stars. 1 reviews
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