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General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..
$8.20
General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..
$21.50
This item is sachets Available in 220 ml bottles and 20 ml sachets. Traditional buffer solutions ar..
$1.04
Hanna Instruments' solution, ideal for gardening, laboratory work, and field experiments. Comes in a..
$14.99
Hanna Instruments' calibration solution, ideal for gardening, laboratory work, and field experiments..
$18.99
Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab ca..
$8.16
For optimal performance, re-calibrate your meters periodically with a 20 ml pack of 1000ppm calibrat..
$25.00
20 ml packs of Potassium Chloride (KCl) is the most important thing to a healthy working pH meter. T..
$25.00
20 ml of pH 4 buffer solution will help you calibrate your probe down to the range of you plant...
$25.00
20 ml pack of pH 7 buffer solution will you calibrate your probe to neutral. Do this before calibra..
$25.00
PLEASE NOTE - This item ships direct from the vendor. Freight will be quoted at time of order. Hydro..
$10,999.95
PLEASE NOTE - This item ships direct from the vendor. Freight will be quoted at time of order. Hydro..
$10,999.95
PLEASE NOTE - This item ships direct from the vendor. Freight will be quoted at time of order. Hydro..
$6,929.95
PLEASE NOTE - This item ships direct from the vendor. Freight will be quoted at time of order. Hydro..
$6,929.95
Miracle-Gro AeroGarden Grow Anything Kit Plant and grow your OWN seeds in your AeroGarden! Grow An..
$14.95