GroLine pH 4.01 Calibration Buffer (500 mL) rockwool without sacrificing your organic certification

without sacrificing your organic certification

The spectrum is comprised of 410

flowers and house plants

too much will cause root rot and plants will suffer

Mounting bracket included

GroLine pH 4.01 Calibration Buffer (500 mL) rockwool without sacrificing your organic certificationHI7004 050 is a high 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