GroLine pH 4.01 Calibration Buffer (500 mL) rockwool 60 watts /

60 watts /

100 gallon conical bottom tank

too much will cause root rot and plants will suffer

Hydrofarm's Xtrasun reflectors were designed with our customers' needs in mind

The spectrum is comprised of 410

GroLine pH 4.01 Calibration Buffer (500 mL) rockwool 60 watts /HI7004 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