Calcium Hardness Test Kits

Calcium Hardness Test Kits are used to measure the amount of dissolved calcium in water — an important factor in maintaining the right water balance. Too much calcium can cause scale buildup, while too little can lead to corrosion and damage to surfaces or equipment. These simple and reliable test kits make it easy to monitor calcium levels in pools, spas, and industrial systems, helping to protect your water systems and keep them running smoothly.

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26 products

Save £49.52
Lovibond MD110 Pool Control 6 in 1 PhotometerLovibond MD110 Pool Control 6 in 1 Photometer
Lovibond
Lovibond MD110 Pool Control 6 in 1 Photometer Sale price£495.55 Regular price£545.07
Save £132.00
Palintest Lumiso Pooltest 6Palintest Lumiso Pooltest 6
Palintest
Palintest Lumiso Pooltest 6 Sale price£535.00 Regular price£667.00
Save £193.50
Palintest Lumiso Pooltest Expert Photometer KitPalintest Lumiso Pooltest Expert Photometer Kit
Palintest
Palintest Lumiso Pooltest Expert Photometer Kit Sale price£1,096.50 Regular price£1,290.00
Save £283.95
Palintest Lumiso Expert PhotometerPalintest Lumiso Expert Photometer
Palintest
Palintest Lumiso Expert Photometer Sale price£1,609.05 Regular price£1,893.00
Lovibond MD610 PhotometerLovibond MD610 Photometer
Lovibond
Lovibond MD610 Photometer Sale price£1,184.76
Save £124.81
Lovibond Pool Control PM630 PhotometerLovibond Pool Control PM630 Photometer
Lovibond
Lovibond Pool Control PM630 Photometer Sale price£835.27 Regular price£960.08
Sold out
Lovibond 5 in 1 Multi-PooltesterLovibond 5 in 1 Multi-Pooltester
Lovibond
Lovibond 5 in 1 Multi-Pooltester Sale price£51.14
Lovibond Checkit 5 in 1 Comparator KitLovibond Checkit 5 in 1 Comparator Kit
Lovibond
Lovibond Checkit 5 in 1 Comparator Kit Sale price£237.38
Save £103.97
Lovibond Pool Control 12 in 1 Photometer PM600Lovibond Pool Control 12 in 1 Photometer PM600
Lovibond
Lovibond Pool Control 12 in 1 Photometer PM600 Sale price£695.82 Regular price£799.79
Lovibond AF416 Calcium Hardness KitLovibond AF416 Calcium Hardness Kit
Lovibond
Lovibond AF416 Calcium Hardness Kit Sale price£51.97
Lovibond MD 200 Pool Control 6 in 1Lovibond MD 200 Pool Control 6 in 1
Lovibond
Lovibond MD 200 Pool Control 6 in 1 Sale price£683.27
Save £215.94
Lovibond MD 640 Photometer and FluorometerLovibond MD 640 Photometer and Fluorometer
Lovibond
Lovibond MD 640 Photometer and Fluorometer Sale price£1,445.14 Regular price£1,661.08
Lovibond 6 in 1 (HR) Three Chamber TesterLovibond 6 in 1 (HR) Three Chamber Tester
Lovibond
Lovibond 6 in 1 (HR) Three Chamber Tester Sale price£40.32
Palintest Balanced Water Chlorine / pH KitPalintest Balanced Water Chlorine / pH Kit
Palintest
Palintest Balanced Water Chlorine / pH Kit Sale price£60.00
eXact Micro 20 w/ Bluetooth Freshwater Aquarium Test KiteXact Micro 20 w/ Bluetooth Freshwater Aquarium Test Kit
ITS
eXact Micro 20 w/ Bluetooth Freshwater Aquarium Test Kit Sale price£509.69
Pool eXact® EZ Photometer
ITS
Pool eXact® EZ Photometer Sale price£162.29
Save £4.18
Hanna Instruments-720 Calcium Hardness Handheld Colorimeter - Checker HCHanna Instruments-720 Calcium Hardness Handheld Colorimeter - Checker HC
Hanna Instruments
Hanna Instruments-720 Calcium Hardness Handheld Colorimeter - Checker HC Sale price£79.42 Regular price£83.60
Save £3.75
Hanna Instruments-758 Marine Calcium Handheld Colorimeter - Checker®HCHanna Instruments-758 Marine Calcium Handheld Colorimeter - Checker®HC
Hanna Instruments
Hanna Instruments-758 Marine Calcium Handheld Colorimeter - Checker®HC Sale price£71.35 Regular price£75.10
Save £177.03
Lovibond MD600 MaxiDirect, CompleteLovibond MD600 MaxiDirect, Complete
Lovibond
Lovibond MD600 MaxiDirect, Complete Sale price£1,184.76 Regular price£1,361.79
Lovibond Multi-Direct Photometer
Lovibond
Lovibond Multi-Direct Photometer Sale price£1,214.94
Lovibond Hardness Total + Calcium Drop Test KitLovibond Hardness Total + Calcium Drop Test Kit
Lovibond
Lovibond Hardness Total + Calcium Drop Test Kit Sale price£115.87
PoolLab 2.0 PhotometerPoolLab 2.0 Photometer
WATER-I.D.
PoolLab 2.0 Photometer Sale price£129.00
Save £27.46
Lovibond Checkit 5 in 1 Pool & Spa Balanced Water KitLovibond Checkit 5 in 1 Pool & Spa Balanced Water Kit
Lovibond
Lovibond Checkit 5 in 1 Pool & Spa Balanced Water Kit Sale price£183.76 Regular price£211.22
LaMotte ColorQ 2x, Pro 7LaMotte ColorQ 2x, Pro 7
LaMotte
LaMotte ColorQ 2x, Pro 7 Sale price£220.00
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