CALL; A.WIHARTA 081294124885 085778084789 087784022201   Info Produk Combine measurement capabilities of three testers in one convenient pocket-sized unit Up to 5 point pH calibration with NIST or USA auto buffer recognition Push-button calibration Waterproof, dustproof housing HOLD function Auto Shut-off Full reading display Automatic temperature compensation ( ATC) Great for water, wastewater, laboratory or plant use, these multiparameter Testers feature long-life pH electrodes with a wide range of sample compatibility. Pin-style conductivity sensors feature stainless steel electrodes for chemical resistance and durability. Replaceable sensor module saves you money by reusing the meter body. Advanced features include auto shut off, user-adjustable temperature coefficient, self-adjusting TDS and salinity factors, and low-battery indicator.