HM Digital C342 TDS Calibration Solution (90 ml)

For optimal performance you shoul re-calibrate the TDS meters periodically.

• NaCl calibration solution are available in 342 ppm or 1000 ppm
• The calibration solution comes in lightweight HDPE plastic bottles
• Never calibrate a meter to the air.
• Never calibrate a meter to distilled water.
• Never calibrate a meter to tap water, or any water or solution that is not certified.
• HM Digital calibration solutions have a shelf life of approximately 1 year unopened.
• Once opened, HM Digital calibration solutions have a shelf life of approximately 6 months, if properly stored and not contaminated.
• All calibration solutions should be stored in a cool place