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Gain Express Holdings Ltd

Gain Express Holdings Ltd

146K items sold
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Best Sellers

  • GM Geiger Counter X-Ray β γ Nuclear Radiation Detector Dosimeter Monitor Tester

    $82.90

  • Light Meter Portable PAR Meter Quantum For Grow Light Recording LUX Meter Gauge

    $139.99

  • Digital Sound Level Meter Datalogger A/C/Z Weighted SPL Decibel Meter 30~130 dB

    $84.90

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  • Decibel Meter Large Colored LED Screen Display Sound Level Tester 30dB to 130dB

    $66.90

Temperature Humidity Monitor

Advanced CO2 Logger, your best IAQ watch

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Temperature Humidity Monitor

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Chelsea Filter for Gem Identification Emerald Green, Blue and Red Gemstones

$31.90

Refractive Index Fluid Oil x 2 Bottles Refractometer RI

$57.90

Digital Sound Level Meter Calibrator Professional Noise Decibel Calibration Tool

$129.90

6X420mm Dental Binocular Loupes Medical Surgical Loupes Dentist Magnifier US

$209.90

ORP Redox Tester -1200~1200mV Water Quality Measurement ±2mV High Accuracy Meter

$39.90

30x Magnification Jewelry Gem Loupe with UV & 6 LED Light, 21mm Optical Glass

$23.90

6-IN-1 Water Quality Tester pH/EC/TDS/Salinity/SG/Temp 24Hrs Online Monitoring

$60.90

Light Intensity Meter PPFD PAR Tester for Outdoor Indoor Plants Led Grow Lights

$86.90

Replacement Remote Sensor for Wireless Weather Station Temperature Humidity

$23.90

Professional Multi-Field EMF Detector Meter Electromagnetic Radiation 3-in-1

$159.90

AC / DC Gaussmeter Magnetic Field Strength Meter Teslameter Magnet N/S Polarity

$257.90

Bench Type Polariscope Built-in w/ LED, Rotatable Platform 2 poalorized Filters

$130.90

Smart Decibel Meter w/ Large LED Screen Sound Level Meter Noise Monitor 30-130dB

$66.80

Gemology Gemstone Gem Refractometer LED Monochromatic Light Filter 1.30 ~ 1.81RI

$92.90

Wireless Weather Station with 3 Sensors Touch Sreen Humidity Temperature RCC DCF

$34.90

Wireless Weather Station Temperature Humidity RCC DCF w/ 3 Remote Sensors

$34.90

PH & Temperature Monitor Meter 2 IN 1 Dual Display Mini Water Quality Tester kit

$33.89

DIAMOND TESTER SELECTOR MOISSANITE Tester UV Ultraviolet Light JEM-II + JEM-III

$89.99

Circuit Breaker Finder Electric Tool Receiver Transmitter Fuse Locator 220V

$54.90

Jewelers Loupe 10X Magnifying Glass with Light Jewelry Eye Loop w/ Reticle Scale

$29.99 to $66.99

Ruby Filter Gem Emerald Identification Gemstone Red Pink Tester Tool Identifier

$32.90

Swimming Pool pH Meter Chlorine Tester Analog Water Analysis Test Kit

$28.99

Salinity & Brix Refractometer Triple Scale with ATC Density Monitoring Measure

$29.90

Decibel Meter Large Colored LED Screen Display Sound Level Tester 30dB to 130dB

$66.90

2 IN 1 Diamond & MoissaniteTester Gem 2pt Diamond Selector JewelryTest Tool

$119.90

K-Type Thermocoupe 4 Channel -200~1370°C /-328~2498°F SD Card Logger Thermometer

$164.90

Window Tint Meter Portable Tool Visible Light, UV IR Measure Solar Film Car Tint

$107.99

Professional Ultrasonic Steel Iron Thickness Meter Gauge Measure 1.2~220mm

$153.90

Wireless Fish Finder 45m (135ft) Depth & 120m (400ft) for Fresh & Salt Water

$94.90

K/J Type Thermocouple Thermometer Temperature Meter Tester Dual Channel 4 Probes

$39.80

3-in-1 EC / CF / TDS Meter Combo Water Quality Tester IP65 Aquarium, Hydroponic

$59.90

Light Meter Portable PAR Meter Quantum For Grow Light Recording LUX Meter Gauge

$139.99

Soil pH Moisture Meter 295mm Waterproof Metal Long Electrode Plant Acidity Test

$55.99

Clinical Refractometer with ATC Tri-Scale-Serum Protein Urine SG Veterinary Vet

$30.90

Dual-Channel K / J / T / E / R / S / N-Type ATC Thermocouple Thermometer Tester

$36.90

Soil pH, Moisture & Light Meter 3 Way Tester Kit, Gardening Acidity Probe Test

$32.90

Automotive Circuit Tester Tracker Electrical Diagnostic Tool Short Open Finder

$49.90

Universal Battery Tester Analyzer C D N AA AAA 9V 1.5V Button Cell Batteries

$9.90

GM Geiger Counter X-Ray β γ Nuclear Radiation Detector Dosimeter Monitor Tester

$82.90

Smart WiFi CO2 Detector Indoor Air Quality Monitor Carbon Dioxide NDIR Sensor

$79.90

CO2 Carbon Dioxide IAQ Monitor Controller with Relay Function NDIR Sensing Probe

$151.90

Professional Anemometer Datalogger Wind Speed Velocity Meter Air Flow Tester

$99.90

Professional Sound Level Meter Noise Decible Tester 30dB~130dB High Accuracy

$35.88

Socket Tester Receptacle Detector Red Light Test Result Indicator Outlet Tester

$26.90

Window Tint Meter Visual Light Transmission 18mm Thickness Continuous Measuring

$139.90

pH Electrode Probe BNC Connector 200cm Long Cable for PH Meter Monitor Pool Spa

$25.90

Professional Dissolved Oxygen DO Meter Digital Barometric Pressure Compensation

$226.90

Protractor Angle Gauge Finder Inclinometer Bevel Box with Spirit Level Magnets

$31.90
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  • About us

    Gain Express Holdings Ltd - We are a professional supplier of all kinds of testing instruments based in Hong Kong. We supply a wide range of products w/ CE approval and our factory is certified by EN ISO9001-2000. You can easily find our company's background via search engines. ie. Google or Yahoo
    Location: Hong KongMember since: Mar 28, 2005Seller: gainexpress
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About us

Gain Express Holdings Ltd - We are a professional supplier of all kinds of testing instruments based in Hong Kong. We supply a wide range of products w/ CE approval and our factory is certified by EN ISO9001-2000. You can easily find our company's background via search engines. ie. Google or Yahoo
Location: Hong KongMember since: Mar 28, 2005Seller: gainexpress
Top Rated SellerGain Express Holdings Ltd is one of eBay's most reputable sellers. Consistently delivers outstanding customer service Learn more

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Feedback ratings

Last 12 months

Positive70- positive feedback in last 12 months
Neutral0- neutral feedback in last 12 months
Negative0- negative feedback in last 12 months

Detailed seller ratings

Average for the last 12 months

Accurate description
5.0
Reasonable shipping cost
5.0
Shipping speed
4.9
Communication
5.0

Seller feedback (79,454)

2***a (467)- Feedback left by buyer.
Past 6 months
Verified purchase
Accurate works good! Thank you! First picture is the ring that I bought from Special Bonnie, posted as a diamond but it test as moissanite! The second pic is my ring.
g***m (137)- Feedback left by buyer.
Past month
Verified purchase
Exactly as described
r***i (340)- Feedback left by buyer.
Past 6 months
Verified purchase
Fast delivery and working as it should
d***d (1629)- Feedback left by buyer.
Past month
Verified purchase
Good
n***p (857)- Feedback left by buyer.
Past month
Verified purchase
Thanks this is a nice tool to check the height of light above the sweet spot of the plant.. PAR Meter Works great.
u***e (85)- Feedback left by buyer.
Past 6 months
Verified purchase
Very satisfied with the delivery and the product.
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