Groline pH 4.01 Calibration Solution Size:230mL working synergistically to promote overall

working synergistically to promote overall plant health

Use with any garden soil

Providing increased nutritional value for blooming

1 x 16ft RJ12 Cable

Built in temperature sensor for Automatic Temperature Compensated measurements

Groline pH 4.01 Calibration Solution Size:230mL working synergistically to promote overallhigh 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.