442 Natural Water Standard Solution is used in calibrating many Myron L® Instruments. It is the best choice when measuring boiler and cooling water samples, city water supply, lakes, wells, etc. "442" refers to the combination of salts mixed with deionized water to comprise this standard: 40% sodium sulfate, 40% sodium bicarbonate, 20% sodium chloride.
- Solutions are made with reagent grade salts and high purity water
- Myron L Solutions keep your instruments accurate to factory standards
- Myron L Solutions are National Institute of Standards (NIST) traceable and accurate to International Critical Table standards
- Extend the life of your meter's sensor