Bluelab pH 4.0 Calibration Solution 250 ml

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.

Adding OG Pure to increase beneficial numbers can only add to the success of your grow. Add OG Pure to your foliar feeds either using Veganic Special Sauce or Vega Matrix Hard and Quick and add biological protection to the leaf, stem, and flower. Include OG Pure in your flushing solution to add biological salt eaters to enhance the breakdown of those salts to achieve the quality of product you truly desire.