GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) special-order so it is best to

so it is best to be added to solution prior to other nutrients - or diluted before adding to a nutrient solution

Can be used from seedling to harvest

Biostimulant effect from seaweed promotes vigorous growth

and 3′ x 6′ trays for the 4′ x 8′ tent

Measures pH and temperature

GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) special-order so it is best toHI70004G is a high quality pH 4. 01 calibration buffer designed with hydroponics, aquaponics, and greenhouses in mind. Single use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on the go testing, fitting easily into your pocket or carrying case. Supplied with Certificate of Analysis Single use sachets for convenience. Perfect for use with GroLine testers and portable meters!