GroLine pH 4.01 Calibration Buffer (500 mL) LED Lighting Use halide for growing

Use halide for growing

which is toxic to plants

Hydrofarm has made it easy to start a tent grow by gathering several vital components into one package

An eight outlet manifold that delivers water and nutrients to your plants at the pressure of your choice

GroLine pH 4.01 Calibration Buffer (500 mL) LED Lighting Use halide for growingHI7004 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