PH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibration Solutions shoul...

Buy Now From Amazon

PH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibration Solutions should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.

  • Meters and solutions from Hydrofarm.
  • Backed by 100% manufacturer's warranty.
  • Bluelab 4.0 250 ML Calibration Solution
  • Meters and solutions from Hydrofarm.
  • Backed by 100% manufacturer's warranty.
  • Bluelab 4.0 250 ML Calibration Solution

Similar Products

Bluelab pH 7.0 Calibration Solution, 250 mlBluelab STSOL100 pH Probe Soil Tester, 100 mLBlueLab 2.77EC Conductivity Solution, 250 millilitersBluelab pH Probe Meter for Plant GerminationBlueLab PH 7.0 Calibration Solution, 500 millilitersGeneral Hydroponics Rapid Rooter Tray, 50 cell tray & plugsiPower 6-Pack 1/8 Inch 8-Feet Long Heavy Duty Adjustable Rope Clip Hanger, 150lb Capacity