HM Digital C342 TDS and EC Calibration Solution, 342 Ppm (NaCl), 90 ml Volume
by HM Digital
- NaCl re-calibration solution for TDS and conductivity meters., Comes in lightweight HDPE plastic bottles., Sealed with a coated foam liner., Note: For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges.