Groline pH 4.01 Calibration Solution Size:230mL Use with any garden soil

Use with any garden soil

Built in temperature sensor for Automatic Temperature Compensated measurements

working synergistically to promote overall plant health

Feed Sugars

hand mix tanks

Groline pH 4.01 Calibration Solution Size:230mL Use with any garden soilhigh quality pH 4. 01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper proof seal to ensure the quality of the solution. Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.