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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
Digital Wood Moisture Meter Tester, 4 Pin, 5% - 40%, NEW DESIGN
$10.00 - $11.90
(Min. Order) 50 pieces
Digital Pen-type Redox Meter Tester -1999mV~1999mV Millivolts Water Quality Backlight LCD (OEM Packaging Available)
$12.06 - $14.51
(Min. Order) 1 set
Pen-Type pH Meter Water Quality Tester with Backlight Digital and Portable
$2.38 - $2.64
(Min. Order) 1 piece
Digital Protractor Angle Gauge Finder 4 x 90degree Bevel Box Inclinometer Level Meter Pocket Size (OEM Packaging Available)
$12.29
(Min. Order) 100 sets
Pentype Digital Water Tester 999mV ORP Meter Redox Waterproof Industrial Laboratory Use (OEM Packaging Available)
$37.10
(Min. Order) 30 sets
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
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Diamond Moissanite Tester Gemstone 2pt Jewel Stone Combo Gem Test Jewelry Identifier Tool Equipment
$73.75 - $81.94
Shipping: $15.90/piece
Min. Order: 2 pieces
9 sold
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
Gemology Gemstone Gem Refractometer w/ Monochromatic Light Filter + Polarizing Lens 1.30 ~ 1.81 RI Range
$48.92 - $54.35
Shipping: $31.80/piece
Min. Order: 1 piece
2 sold
Add to cart
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
Shipping to be negotiated
Min. Order: 1 set
23 orders
TM-190 Electromagnetic Electric RF Field Strength Tester EMF Meter RF Gauss Meter 20mG with Warning Indicator
$99.39 - $110.14
Shipping: $28.00/piece
Min. Order: 1 piece
33 sold
Add to cart
Water Activity Meter Food Water Activity Analyzer for Food Dried Fruit Grain Vegetable AW Monitor (OEM Packaging Available)
$325.30 - $341.77
Shipping: $37.30/set
Min. Order: 1 set
1 sold
Add to cart
Medium Size, Durable Handheld Diffraction Spectroscope Gemological Tool
$20.25 - $22.86
Shipping: $28.00/piece
Min. Order: 1 piece
1 sold
Add to cart
Digital Sound Noise Level Tester Calibrator for Sound Level Meter 94dB & 114dB output Class I w/ Battery +/-0.3 db Accuracy
$78.05 - $86.49
Shipping: $28.00/piece
Min. Order: 1 piece
6 sold
Add to cart
Indoor Air Quality 9999ppm Digital Carbon Dioxide Temperature Humidity NDIR Sensor IAQ CO2 Monitor WB DP Tester CO2 Meter
$93.50 - $103.90
Shipping: $44.40/piece
Min. Order: 1 piece
10 sold
Add to cart
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
AC / DC Gaussmeter Magnetic Field 3000mT (30000 Gauss) Strength Meter Teslameter Magnetometer (OEM Packaging Available)
$153.61 - $165.58
Shipping: $31.80/piece
Min. Order: 1 piece
14 sold
Add to cart
SOL-PH4.003 pH Buffer Solution Calibration Tool with +/- 0.01pH at 25degree Celsius Accuracy (OEM Packaging Available)
$0.60 - $0.90
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
Handheld Heavy Duty Calcite Dichroscope, Trichoic Gem & Gemstones Gemological Testing, 15mm Diameter Gemologist
$20.25 - $22.86
Shipping: $28.00/piece
Min. Order: 1 piece
4 sold
Add to cart
CO2 Carbon Dioxide Monitor & Controller (Relay Function) w/ Remote Sensor for Home, Office, Hospital (OEM Packaging Available)
$93.90 - $108.90
Shipping to be negotiated
Min. Order: 1 piece
5 orders
pH / EC / Temperature Meter ATC 3 in 1 Waterproof Combo Multi-Parameter Tester Pool Spa Drinking Purity
$15.80 - $17.83
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
NEW Carbon Dioxide Monitor CO2 Controller w/ 4.6 Meters Dual Beam NDIR, Day Night Detector Sensor For Greenhouse, Mushrooms
$93.90 - $108.90
Shipping: $37.30/set
Min. Order: 1 set
90 sold
Add to cart
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