Oakton TDSTestr11+ multi-range, cup-style pocket TDS tester

Use these testers for either cup-style or dip-style measurements. For cup style, pour a small amount of your sample directly into the sensor cup until it overflows; for dip style, simply immerse tester tip into sample. Replaceable sensor lets you reuse meter body many times over. Valox® housing and stainless steel electrodes for good chemical compatibility. Note: Before measuring, calibrate tester as either cup style or dip style (depending on intended method of use). What's Included: protective plastic storage case, lanyard, and batteries Operate as either a cup-style or dip-style tester for greater flexibility Automatically or manually select measuring range Waterproof, dustproof housings float Push-button calibration, HOLD function, and error messages