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	Oakton 1413 TDS Solution -- 500 ml ... Only $18.31
	Oakton Ecotestr TDS Low New OAKTON ECOTestr TDS Low pocket meter features a large ergonomically designed display so that you can easily view measurements at a glance. The stainless steel electrodes are both rugged and chemical resistant, for use in a variety of applications.... Only $74.43
	HM Digital HydroMaster Continuous pH/EC/TDS/Temp Monitor Model HM-500 HydroMaster Digital tester makes monitoring water easier than ever by reading the levels that matter most and providing accurate readings that you can depend on. Continuous pH/EC/TDS/Temp monitor with rechargeable battery. Features wall mount or bench-top... Only $300.84
	HM Digital Waterproof Combo Meter COM-100 Measures electrical conductivity (EC), total dissolved solids (TDS) and temperature. Three different calibration options (KCl, 442TM, NaCl), each with its own non-linear conversion factor. Automatic Temperature Compensation (ATC) using three temperature... Only $59.97
	HM Digital Waterproof pH Meter Model PH-200 Measures pH and Temperature. Auto-ranging three point calibration with digital fine tuning. Includes 4 pH buffer solution in a sponge embedded in a clear cap. Waterproof housing. Simultaneous temperature display. Measurement Range: 0-14 pH. Digital automatic... Only $79.97
	HM Digital 1000 PPM TDS Calibration Solution For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges. NaCl calibration solution. Comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner. MSDS Only $5.04
	Replacement Probe for HM Digital Waterproof Combo Meter COM-100 Measures electrical conductivity (EC), total dissolved solids (TDS) and temperature. Three different calibration options (KCl, 442TM, NaCl), each with its own non-linear conversion factor. Automatic Temperature Compensation (ATC) using three temperature... Only $31.94
	Replacement Probe for HM Digital Waterproof pH Meter Model PH-200 Measures pH and Temperature. Auto-ranging three point calibration with digital fine tuning. Includes 4 pH buffer solution in a sponge embedded in a clear cap. Waterproof housing. Simultaneous temperature display. Measurement Range: 0-14 pH. Digital automatic... Only $36.91
	HM Digital In-Line Dual TDS Monitor Model DM-1 Displays TDS levels of the feed water and product water with in & out electrode probes. Highly efficient and accurate due to its advanced microprocessor technology. Auto-Off function conserves battery power. The unit shuts off automatically after... Only $32.31