Myron L (442-300) 442 Natural Water Standard Calibration Solution 300 PPM Mixed Bed DI Inlet and outlet

Inlet and outlet

Calibrate using fresh Zobell's solution (220 mV at 25°C) or alternative ORP standard per meter instructions

Individually sealed

Installing Your TW30-4040 Membrane

💧 The C-600P series earns its reputation in the field

Myron L (442-300) 442 Natural Water Standard Calibration Solution 300 PPM Mixed Bed DI Inlet and outletMyron L Myron L 442 Natural Water Standard Calibration Solution 300 PPM Industry standard calibration solution for natural water TDS testing across municipal, industrial, and environmental applications Model 442 300 300 PPM Natural Water Standard 442 Salt Formula The Myron L 442 300 calibration solution has been the world's most accepted natural water standard for over 35 years, formulated specifically to match the variable salt composition found in