Comments: LCW906 for high measuring range, LZP341 for low measuring range Description: Free / Total chlorine and ozone, two measuring ranges Shelf life: 24 months from date of manufacture Measuring range: 0.1 - 1.5 mg / L Cl2 / O3 (round cuvette) Measuring range (2): 0.03 - 0.4 mg / L Cl2 / O3 (50 mm rectangular cuvette) Method: DPD