HM 1000 PPM CALIBRATION SOLUTION
HM 1000 PPM CALIBRATION SOLUTION at HorticultureSource.com -
HM 1000 PPM CALIBRATION SOLUTION (716170) HM Digital TDS Calibration Solution For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges. NaCl calibration solution. Comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner. Manufacturer's Product Information MSRP $ 6.95