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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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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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Salinity Refractometer ATC 0-100ppt (0-10%) & 1.000-1.070 SG Dual Scale Seawater Salt Meter (OEM Packaging Available)
$8.64 - $10.40
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
Professional Multi-parameter ORP Water Quality tester pH/ORP/Temp/Cond/TDS/Salt with ORP probe, Replaceable Probe
$97.56 - $108.11
Shipping: $31.80/set
Min. Order: 1 set
Add to cart
Smart Mini WIFI 5-in-1 Water Quality Tester pH/TDS/SALT/S.G. & Temp Meter TUYA Smart App for Aquarium Hydroponics Pool Aqua
$25.22 - $28.46
Shipping: $11.34/piece
Min. Order: 5 pieces
Add to cart
GAINEXPRESS 8-in-1 Water Test Kit pH. ORP. EC Conductivity, TDS, Salt, S.G., CF, and Temperature with Online APP Tester
$41.52 - $46.14
Shipping: $14.95/piece
Min. Order: 5 pieces
Add to cart
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
Dual Scale Salinity Refractometer ATC 0-100ppt (0-10%) & 1.000-1.070 Specific Gravity, Portable Meter Tester for Seawater Salt
$8.64 - $10.40
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Made in Taiwan/Digital 6-in-1 MultiFunction Pentype Water Quality Meter pH Temperature Conductivity TDS Salt Tester optional ORP
$73.17 - $81.08
Shipping: $31.80/piece
Min. Order: 1 piece
2 sold
Add to cart
Salinity & Temp Meter Pen Type Salt Water Quality Tester ATC NaCl Aquarium Pond Food Pool Cooking Seawater 3-in-1 Checker
$22.81 - $25.74
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
IP65 Water Quality Meter Pocket Size TDS Salinity Temperature Tester Digital Salt Tester LCD Display w/ ATC
$21.47 - $24.23
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Digital TDS Salinity Temperature Tester IP65 Salt Tester LCD Display ATC w/ Pouch
$21.76 - $24.56
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Water Quality Tester 4-in-1 TDS Temperature S.G Salt Salinity Meter with ATC for Testing Drinking Water, Aquaculture, Aquarium
$9.38 - $11.28
Shipping: $5.42/piece
Min. Order: 5 pieces
Add to cart
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