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4.0 pH Bluelab Calibration Solution 20ml, case of 25

Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab ca..

$44.95

AdjustaDrive 4.0 w/ 6' Rail and Mount/Hardware

Adjust-a-drive motor w/6' rail plus mounting hardware The all new LightRail 4.0 AdjustaDrive is the..

$303.99

Bluelab pH 4.0 Calibration Solution 250 ml, case of 6

Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab ca..

$48.95

Bluelab pH 4.0 Calibration Solution 500 ml, case of 6

Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab ca..

$65.95

Buffer 4.01 pH 500ml

Oakton® buffers for meters with 0.01 resolution are standardized against NIST-certified pH reference..

$19.99

Essentials Calibration 8oz 4.01

For the calibration of pH testers. Use in conjunction with pH Buffer 7...

$7.95

Extreme Duty 3.0, 3.5 and 4.0 Trolley Wheel Kit

EXTREME DUTY TROLLEY WHEELS, for LightRail 3.0, 3.5 and 4.0. A suggested upgrade item for moving mu..

$26.99

Lighthouse2.0 Controlled Environment (4.0'x4.0'x6.5')

The Lighthouse Controlled Environment is designed to help you grow your favorite plants indoors. The..

$165.99

LightRail 4.0 Adjusta-Drive Motor

Adjust-a-Drive MOTOR ONLY This item is a replacement motor for the LightRail 4.0 AdjustaDrive light..

$256.99

LightRail 4.0 AdjustaDrive Motor w/ Rail

The all new LightRail 4.0 AdjustaDrive is the newest linear light mover available from Gualala Robo..

$301.99

pH 4.01 Calibration Solution 1 qt

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..

$21.50

pH 4.01 Calibration Solution 8 oz

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..

$7.54