HI70442L is a premium quality 1,500 mg/L (ppm) TDS calibration solution that is prepared against a NIST traceable potassium chloride solution.

Hanna TDS solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution.

Hanna’s line of TDS calibration solutions have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

HI70442L...
- Temperature chart of the actual µS/cm value at various temperatures printed on each bottle
- Air tight bottle with tamper-proof seal to ensure quality

Detailed description:

- TDS Value @25°C : 1500 mg/L (ppm)