These Calcium Hardness Test Strips 486629 are used in the Sensafe Exact Micro 7 Photometer and in other water testing micro meters.

Spa and Swimming pool owners should test pool water for calcium regularly to ensure their hardness is in the proper range. Low calcium levels can result in corrosive water, which stains pool surfaces and destroys tile grouting and metal or plastic equipment. Likewise, if your pool water calcium level is too high and your water is too hard, scale can form on pool surfaces and in your pipes. High calcium hardness in pools can also lead to sore eyes.

• Contains 50 calcium pool test strips
• Detection Range: 20 - 990 ppm 
• Chemistry: Oxalic Acid

A full refill kit for the Exact Micro 7 meter would include these eXact Strip Micro test strips (each sold separately):

• pH Test Strips 486639
• Copper Test Strips 486632
• Calcium Test Strips 486629
• Total Alkalinity Test Strips 486641
• Free Chlorine Test Strips 486637 (DPD-1)
• Total Chlorine Test Strips 486670 (DPD-4*)

*The DPD-3 Total Chlorine strips that came with the eXact Micro kit require the use of a DPD-1 strip to test for free chlorine, whereas the DPD-4 strips do not.