Environmental Express Conductivity and TDS Standards are manufactured under ISO 9000 quality guidelines and traceable to NIST standard reference materials. KCl, NaCl and 442 conversions printed on the bottle (60-mL bottle, included on insert). Standard values are corelated at 25°C. Conductivity options available from 1 µS/cm to 200,000 µS/cm for a variety of applications, including environmental monitoring, pharmaceutical and biotech, food and beverage manufacturing, and corrosion testing.

If unopened, shelf life is 1 year. Opened recommended shelf life is 4 months.

Chemicals sold by Cole-Parmer are not intended for and should not be (i) used for medical, surgical or other patient oriented applications, or (ii) combined with any food product or ingested in any form.