GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) special-order and 3′ x 6′ trays

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

500K 47″ x 34½” x 2½” 30 lbs 48¼” x 38″ x 4″ 33

450 CFM fan with 6-inch duct for outgoing air (bottom duct)

Get Better Soil Data — Fast

GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) special-order and 3′ x 6′ traysHI70004G 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!