The waterproof, Bluetooth® ColorQ® 2x Pool 4 measures four basic pool and spa tests Free Chlorine, Total Chlorine, Bromine and pH. As a bonus, the ColorQ® 2x Pool 4 can also measure Total Alkalinity (order code 3896A-J), Calcium Hardness (Order Code 3887A-J), Cyanuric Acid (Order Code 6996A-J), Iron (Order Code 3725A-J), Copper (Order Code 3808A-J), Biguanide (Order Code 3919-G), and Biguanide Shock (Order Code 6930A-J) with optional reagents sold separately. The user-friendly photometer, testing reagents and photo-diagrammatic instructions are packaged in a convenient carrying case for on-site testing. Test Factor Range # of Tests Free Chlorine (DPD) 0-10 ppm 144 Total Chlorine (DPD) 0-10 ppm 144 Bromine (DPD) 0-22 ppm 144 pH 6.5-8.5 144 Optional Test Factors (Sold Separately) Range Total Alkalinity 0-300 ppm Calcium Hardness 0-600 ppm Cyanuric Acid 0-150 ppm Iron 0-3.0 ppm Copper 0-4.0 ppm Biguanide 0-70 ppm Biguanide Shock 0-160 ppm
