N in 1 test strip

t393A  for PH or Free Chlorine

T393B  2 in 1 for PH and Free Chlorine

T393C  3 in 1 for PH,Free Chlorine and Total Alkalinity

T393D  4 in 1 for PH,Free Chlorine, Total Alkalinity and Total Bromine

T393E   5 in 1 for PH,Free Chlorine, Total Alkalinity ,Total Bromine and Total Hardness

T393F   6 in 1 for PH,Free Chlorine, Total Alkalinity ,Total Bromine ,Total Hardness and Cyanuric Acid