HI96734-11 CalCheck ™ Chlorine HR Free & Total Calibration-Set

Range 0:00 to 2:50 ppm | ascorbic acid method | Resolution 0.01ppm

Range 0:00 to 2:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm

Range 0.0 - 15 ppm | Molybdenum Blue Method | 0.1ppm resolution