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Product code: MX-12306
HI719-11 is a high-quality set of calibration standards that allows users to validate the Magnesium Hardness Checker®HC - HI719 . The HI719-11 includes one sealed cuvette for zero ppm CaCO3 and one cuvette that is tinted to an equivalent 1.00 ± 0.20 ppm CaCO3 sample @ 25oC.
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HI719-11 is a high-quality set of calibration standards that allows users to validate the Magnesium Hardness Checker®HC - HI719 . The HI719-11 includes one sealed cuvette for zero ppm CaCO3 and one cuvette that is tinted to an equivalent 1.00 ± 0.20 ppm CaCO3 sample @ 25oC. The calibration check set is produced in our state-of-the-art manufacturing facility using reagent grade chemicals in a temperature controlled environment.

Hanna
MX-11176
HI9829-14/15 is for premium quality 10 ppm and 100 ppm (mg/L) Nitrate (as N) calibration standards. It is produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with…