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Meters & Controllers

Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
Out of stock
$24.20 $35.00 -31%
Dilution Solutions HM Digital EC Calibration Solution - 1000 PPM - NaCl
In Stock: 29
$5.79 $8.95 -35%
Hanna Standard Conductivity Solution - 500ml - 1413 µS/cm - NIST Traceable
In Stock: 8
$30.13 $31.89 -6%
HM Digital TDS-3 Handheld TDS meter
In Stock: 37
$25.53 $36.99 -31%
Bluelab Connect Stick 2 - for Bluelab Connect Devices - Wireless Data to Smartphone
In Stock: 168
$73.27 $147.11 -50%
HM Digital PH-80 pH/Temperature Meter
In Stock: 223
$39.70 $47.99 -17%
Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
Out of stock
$35.88 $95.00 -62%
Bluelab Meter Carrying Case - Hands-Free Readings - Probe Storage Pockets
In Stock: 165
$24.67 $35.60 -31%
GroStar GS4-E Replacement Electrode
In Stock: 73
$66.71 $79.99 -17%
Dilution Solutions Pro HM Digital pH Meter - 7.3in x 1.3in x 1.3in
In Stock: 323
$94.53 $99.95 -5%
Bluelab Conductivity Standard Solution - 500ml - 2.77 EC
In Stock: 159
$124.98 / $20.83 per unit
(minimum purchase of 6)
GroStar GS2-E Replacement Electrode
In Stock: 97
$151.77 $181.99 -17%
Bluelab pH Probe KCl Storage Solution - 250ml
In Stock: 218
$162.90 / $27.15 per unit
(minimum purchase of 6)
Bluelab Connect Range Extender - for Bluelab Connect Devices and Connect Stick
In Stock: 10
$100.96 $202.71 -50%
Dilution Solutions EC Calibration Solution - 20pc Box - Individual Packets
In Stock: 225
$10.18 $24.95 -59%
GroStar pH 4/7/10 Calibration Kit
In Stock: 36
$24.17 $28.99 -17%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In Stock: 31
$10.81 $10.99 -2%
1" Digital Flow Meter
In Stock: 14
$97.26 $103.95 -6%
GroStar GS1-E Replacement Electrode
In Stock: 96
$42.52 $50.99 -17%
Hydro Systems Multi Nutrient Delivery System Flow Meter Kit for E-Dos Electric Pumps - Clamp-On Fittings - Flow Meter with Wiring Harness
Out of stock
$2,993.45 $3,168.25 -6%
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