PORTABLE TURBIDITY METER Principle 90°The scattered light Measuring van (NTU) 0-200 The minimum value (NTU) 0.1 Calibration point - Error value ±6%(±2%F.S) Zero drift ±0.5%F.S Size and weight 210*75*70MM& 0.5KG Power supply Dc 1.5 V * 5 AA alkaline batteries, AC 220 V / 50 hz/DC7.5 V / 0.2 A power adapter, Automatic shutdown, ac/dc. ORIGIN : GABY INSTRUMENTS DELIVERY : 2 WEEKS