No need to buy 4 different meters for pH, conductivity, TDS and salinity! The OAKTON PCTSTestr 50 Waterproof Pocket pH/Cond/TDS/Salinity Tester measures all of these for you in one convenient meter - see 0:12. This multi-parameter tester features a long-life pH electrode with a wide range of sample compatibility. It's great for chemical resistance and durability
Also see this video-
[ Ссылка ]
