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GAIN EXPRESS HOLDINGS LIMITED
HK
12YRS
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
Top picks

Product categories

300cm long Cable ORP Electrode for ORP Meter Tester Controller (OEM packaging available)
$17.16 - $19.37
(Min. Order) 1 set
20x Magnification 20.5mm Jeweler Gem Loupe Triplet Lens Jewelry Optical Hobbyist Stamp & Coin (OEM Packaging Available)
$6.14 - $7.39
(Min. Order) 2 sets
3-in-1 Automotive Antifreeze Refractometer 1.100 - 1.400kg/l System Coolant Freezing Point (OEM Packaging Available)
$9.05 - $10.88
(Min. Order) 1 set
Gloss Surface Meter 0.1-200 GU Tester Meter 20deg 45deg 75deg for Ceramics Films Textiles Rechargeable Reflectometer Triple
$216.87 - $227.85
(Min. Order) 1 piece
3-in-1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC (OEM packaging available)
$20.65 - $23.30
(Min. Order) 1 set
Greenhouse CO2 Controller w/ 4.5 Meters Remote CO2 Sensor Auto Detect Day Night Function Perfect for Grow Rooms, Home, Offices
$93.90 - $108.90
(Min. Order) 1 set
23 orders
Digital CO2 IAQ Monitor Controller 45M Cable NDIR Sensing Probe w/ Relay Function Green House Home, Office, Factory
$93.90 - $108.90
(Min. Order) 1 piece
CO2 Carbon Dioxide Monitor & Controller (Relay Function) w/ Remote Sensor for Home, Office, Hospital (OEM Packaging Available)
$93.90 - $108.90
(Min. Order) 1 piece
5 orders
ORP Tester / Monitor
All products
Water Quality Meters
ORP Tester / Monitor
Customizable
Ready to Ship
6 in 1 Professional Multi-parameter Water Quality Monitor Tester pH/ ORP/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter
$62.16
Shipping to be negotiated
Min. Order: 5 pieces
6 in 1 Professional Multi-parameter Digital Multi-function Water Quality Monitor Tester pH/ ORP/ EC/ CF/ TDS PPM/ Temperature
$62.16
Shipping to be negotiated
Min. Order: 5 pieces
Digital Pensize ORP Redox Tester Oxidation Reduction Potential Meter 1200~1200mV Water Quality Measurement High Accuracy
$16.43 - $18.54
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
ORP-228 ORP Redox Meter Tester -1999~1999mV, 1-point Calibration, Oxidation Reduction Potential, Swimming Pools, Aquaculture
$13.53 - $15.27
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Digital ORP Temperature Meter Redox Thermometer Tester -1999mV~1999mV Pool Aquarium
$19.20 - $22.00
Shipping to be negotiated
Min. Order: 20 pieces
ORP Meter Redox 999mV Waterproof IP65 Digital Water Treatment Pen Type Tester Industrial Laboratory Use
$37.10
Shipping to be negotiated
Min. Order: 30 pieces
Digital Oxidation Reduction Potentialis ORP Redox Meter Tester Water Quality Pool Aquarium 0 to +/-1000mV Range
$15.95 - $18.00
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Digital Mini ORP REDOX Meter Tester 0 ~ +/-1999mV Range Electrode +/- 5mV Accuracy
$22.50
Shipping to be negotiated
Min. Order: 5 pieces
Redox Meter -1999mV~1999mV Millivolts Backlight LCD Pool Aquarium ORP Water Quality Digital Pen-type Tester
$12.06 - $14.51
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart