pH AND FREE & TOTAL PHOTOMETER, RANGE: 0.00 TO 5.00 mg/L OF Cl2 (FREE & TOTAL), ACCURACY: ± 0.04 mg/L AT 1.50 mg/L; RANGE: 5.00 TO 9.00 pH, ACCURACY: ± 0.01 pH. SUPPLIED IN HARD CARRYING CASE INCLUDING 2 CUVETS, REAGENTS, WIPING TISSUE AND INSTRUCTION MANUAL.