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GAIN EXPRESS HOLDINGS LIMITED
HK
12
YRS
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
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Product categories
NEW ARRIVALS
Air Quality Meters
Automotive Testing Equipment
Water Quality Meters
Fishing Tackles/Gears
Dental Loupe
Gemological Instruments / Jeweler Tools
Health, Fitness & Sports
Inspection Cameras / Endoscopes / Borescopes
Microscopes / Ring Lights / Illuminators
Multimeters / Clamp Meters
Measuring Instruments
OEM Products
Ozone Generator
Refractometers
Tension Tester
Water Level Alarm
Weather Station
Ungrouped
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
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3-in-1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC Aquarium, Hydroponic
$20.65 - $23.30
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
2-in-1 ORP Redox Temperature Thermometer Water Quality Meter Tester (OEM Packaging Available)
$19.20 - $22.00
Shipping to be negotiated
Min. Order: 20 sets
86031 6-in-1 Digital IP67 Combo Water Quality Tester pH Temperature Conductivity TDS Salt DO Tester (OEM Packaging Available)
$185.00 - $229.00
Shipping to be negotiated
Min. Order: 10 sets
3in1 Waterproof EC CF ppm Stick Meter Nutrient Water Quality Tester
$21.00
Shipping to be negotiated
Min. Order: 10 pieces
3-in-1 Pentype EC, pH & Temperature Meter 0.01mS/cm Resolution ATC Water Quality Tester (OEM Packaging Available)
$21.08
Shipping to be negotiated
Min. Order: 10 sets
3-in-1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC (OEM packaging available)
$20.65 - $23.30
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
Digital pH Meter Water Quality Tester + Adaptor + 2 Free Buffer Solutions 1M cable (OEM Packaging Available)
$17.40
Shipping to be negotiated
Min. Order: 20 sets
pH Meter 360deg Flexible Display Angle Portable Pocket Size Water Quality Tester 0.00~14.00pH for Household Drinking Water
$12.96 - $15.59
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
5-in-1 Multi-Parameter Pentype Water Quality Tester (pH / TDS / EC / Temp / Salinity) Waterproof Digital Meter for Lab Household
$25.14 - $28.37
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
TDS / EC Meter 2-in-1 Pentype Digital Water Quality Tester with ATC Temperature Measurement for Water Analysis Hydroponics
$4.50
Shipping to be negotiated
Min. Order: 20 pieces
pH & Temperature Meter 14.00 pH Range 3-Point Calibration Water Quality Tester with 3 Buffer Powder (OEM Packaging Available)
$4.32 - $5.55
Shipping: $2.44/piece
Min. Order: 100 pieces
Add to cart
pH Digital Portable High Accuracy Pen-Type Meter Water Quality Tester with Automatic Calibration
$2.55 - $2.82
Shipping to be negotiated
Min. Order: 1 piece
TDS Digital Portable High Accuracy Pen-Type Meter Waterproof Water Quality Tester
$1.46 - $2.90
Shipping to be negotiated
Min. Order: 1 piece
Digital 14.00 pH Long Tube Self Calibration One Touch 12cm Probe pH Temperature ATC Pen type Meter IP65 Water Quality Tester
$24.15
Shipping to be negotiated
Min. Order: 50 pieces
2-in-1 Multifunction High Precision ORP Meter pH meter Water Quality Tester IP67 Waterproof (OEM Packaging Available)
$18.30 - $18.34
Shipping to be negotiated
Min. Order: 50 sets
Pen Type Salinity Water Quality Tester ATC NaCl 0~70 ppt Water Quality Tester IP65 (OEM Packaging Available)
$22.81 - $25.74
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
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