Combination pH / EC Meters
$6.99
Sale
-36%
General Hydroponics Standard Reference Solution pH 7.0 - 8fl oz
Regular price
$6.99
$10.99
$10.99
Out of stock
Sale
-15%
Bluelab pH Probe KCI Storage Solution — 100ml
Regular price
$10.99
$12.99
$17.99
Sale
-10%
Bluelab pH Probe KCI Storage Solution — 250ml
Regular price
$17.99
$19.99
$6.99
Sale
-30%
General Hydroponics Standard Reference Solution pH 4.01 - 8fl oz
Regular price
$6.99
$9.99
$16.99
Out of stock
Sale
-19%
General Hydroponics Standard Reference Solution pH 7.0 - 1qt
Regular price
$16.99
$20.99
$94.99
Sale
-5%
Bluelab Conductivity Pen (ppm)
Regular price
$94.99
$99.99
$6.99
Sale
-30%
General Hydroponics Standard Reference Solution - 8fl oz
Regular price
$6.99
$9.99
$15.99
Sale
-11%
GroLine Quick Cal — 500mL
Regular price
$15.99
$17.99
$155.99
Sale
-13%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
Regular price
$155.99
$178.99
$102.99
Sale
-14%
GroStar GS1 pH Pen
Regular price
$102.99
$120.00
$85.99
Sale
-10%
Milwaukee EC40 Pro Nutrient Stick
Regular price
$85.99
$95.99
$199.99
Out of stock
Sale
-5%
GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester
Regular price
$199.99
$209.99
$17.99
Sale
-10%
GroLine Storage Solution — 500mL
Regular price
$17.99
$19.99
$139.99
Out of stock
Sale
-7%
Bluelab Truncheon Nutrient Meter
Regular price
$139.99
$149.99
$17.99
Out of stock
Sale
-18%
Hanna Storage Solution HI70300 500 ml
Regular price
$17.99
$21.99
