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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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Digital Pen-size pH Meter 0-14pH Range w/ ATC, IP65 Waterproof Big LCD Screen Automatic Calibration
$19.46
Shipping to be negotiated
Min. Order: 100 pieces
6-in-1 Pen type Water Quality Tester Multi-Parameter pH meter Temp. EC ORP TDS SAL Optional ORP Probe(OEM available)
$73.17 - $81.08
Shipping: $31.80/set
Min. Order: 1 set
5 sold
Add to cart
Pentype PH meter Temperature Tester w/ IP67 Waterproof ATC for Aquarium, Pool, Labs, Car Washes (OEM Packaging Available)
$18.11 - $20.44
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
Digital Pentype pH Meter 7-in-1 PH / TDS / EC / ORP / Salinity / S.G. / Temperature Meter for Drinking Water, Aquariums, Pool
$15.02 - $16.95
Shipping: $6.36/piece
Min. Order: 5 pieces
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
Digital and Portable Pen-Type pH Meter Water Quality Tester with Backlight
$2.38 - $2.64
Shipping to be negotiated
Min. Order: 1 piece
pH Meter Digital 6 IN 1 Floating Monitor EC / Salinity / pH / ORP / Temperature / Chlorine Smart Meter Tester With Bluetooth
$29.50 - $33.29
Shipping: $10.14/piece
Min. Order: 5 pieces
Add to cart
Pentype pH Meter Digital 0.00 - 14.00pH Range With Auto Calibration For Aquarium, Food Processing, Etc (OEM Packaging Available)
$4.32 - $5.55
Shipping to be negotiated
Min. Order: 100 pieces
Soil pH Meter Tester Sensor w/ Pointer Type Sensor for Gardener Indoor Outdoor Garden Farm Lawn Household
$9.19
Shipping to be negotiated
Min. Order: 30 pieces
Handheld Digital Pentype pH Meter Tester Hydroponic Aquarium 0.00 - 14.00 pH Range w/ 2 Buffer Solution (OEM Packaging Available
$7.56 - $8.37
Shipping to be negotiated
Min. Order: 80 sets
Pocket Size 0.0-14.0 pH Meter Digital Water Quality Tester Pen Type Household Drinking Water, Swimming Pools +/- 0.1pH
$6.59
Shipping to be negotiated
Min. Order: 100 pieces
Digital Pen-type PH Meter 0.00 - 14.00 pH Range Lightweight Compact W/ ATC for Hydroponics, Aquariums, Swimming Pools, Spas, Etc
$7.60 - $9.00
Shipping to be negotiated
Min. Order: 40 pieces
Twistable Pocket-size Digital PH Meter 360deg Angle Flexibility for Lab, Industrial, Water Analysis (OEM Packaging Available)
$12.70 - $14.33
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
Digital pH Meter 2-point Calibration Online w/ pH Electrode & Temp Probe for Pool Pond Spa Tank (OEM Packaging Available)
$23.72 - $26.49
Shipping to be negotiated
Min. Order: 50 sets
NEW Pentype 7-in-1 PH Meter TDS/EC/ORP/Salinity/S.G./Temp. Tester For Drinking Water, Aquariums, Pool (OEM Packaging Available)
$15.02 - $16.95
Shipping: $6.36/piece
Min. Order: 5 pieces
Add to cart
Pocket Size PH Meter 0.00~14.00pH Range Best for Educational Purposes W/ Removable Electrode
$11.30 - $13.50
Shipping to be negotiated
Min. Order: 10 pieces
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