442 Natural Water Standard Solution is used for calibrating many Myron L Instruments. Ideal choice when measuring boiler and cooling water samples, city water supply, lakes, wells and more. 442 refers to the combination of salts mixed with deionized water to comprise this standard: 40% sodium sulfate, 40% sodium bicarbonate, 20% sodium chloride.
- 442-300 Natural Water Standard Solution
- 946ml bottle