Environmental – Gain Express Wholesale Deals

Sold Out

TDS-232 Digital Combo pH & TDS Monitor Meter Tester ATC, 0.00~14.00pH & 0.0~199.9ppt Rechargeable Real-time Monitoring

Regular Price $37.90 USD

Sold Out

PHM-234 3-in-1 pH, EC & TDS Conductivity Monitor with ATC Water Quality Meter Tester

Regular Price $0.00 USD

ND9B Digital Sound Level Meter Calibrator 94dB & 114dB for 1/2" and 1" inch Microphone, Noise Decibel Calibration Tool

Regular Price $101.90 USD

Sold Out

PHM-230 Digital Online pH & Temperature Meter, Water Quality Monitoring Pool Aquarium Tester

Regular Price $0.00 USD

Sold Out $REB-32KMWATC Handheld 0-32% Brix Refractometer with ATC, 0-140°Oe, 0-27KMW/Babo, Oechsle, for brandy, beer worth$

REB-32KMWATC Handheld 0-32% Brix Refractometer with ATC, 0-140°Oe, 0-27KMW/Babo, Oechsle, for brandy, beer worth

Regular Price $0.00 USD

Sold Out

PHM-229 Digital Aquarium pH Monitor Meter Tester with Replaceable Electrode Continuous Monitoring Fish Tank Pond

Regular Price $0.00 USD

ECM-231 Online PH & EC Conductivity Monitor Meter Tester ATC, Water Quality Real-time Continuous Monitoring, Rechargeable

Regular Price $24.90 USD

DHL shipping cost

Regular Price $57.90 USD

Sold Out

ECM-226 3-in-1 Conductivity EC & pH & Temperature Meter Multi-parameter Tester

Regular Price $24.90 USD

Sold Out

ECM-227 Digital LCD EC Conductivity Meter Tester 0~19.99ms/cm Pen Type with Backlight, Hydroponics, Aquaculture

Regular Price $0.00 USD

Sold Out

PHM-237 Economical pH Pocket Meter Tester Size with Clip, High Accuracy Removable Probe Electrode

Regular Price $15.90 USD

ORP-228 ORP Redox Meter Tester -1999~1999mV, 1-point Calibration, Aquariums, Swimming Pools, Water Quality Tester

Regular Price $18.90 USD

PHM-224 PH ORP Temperature 3-in-1 Combo Meter Tester Pen Type with Automatic Temperature Compensation

Regular Price $40.90 USD

Sold Out

END-225_5.5MM_1M Inspection Camera Recordable Endoscope 5.5mm 1M Cable with 6 LED Lights, 2.3" TFT Color LCD Borescope NTSC/PAL

Regular Price $73.90 USD

$RES-10ATC 0-10% Salinity Refractometer ATC Dual Scale 1.0~1.070 Density / 0~100ppt Salt Sea Water Aquarium Tank Marine Industry$

RES-10ATC 0-10% Salinity Refractometer ATC Dual Scale 1.0~1.070 Density / 0~100ppt Salt Sea Water Aquarium Tank Marine Industry

Regular Price $12.90 USD

$REB-32SGATC Beer Brix & Specific Gravity Refractometer with ATC Optic Dual Scale 0~32% Brix 1.000-1.130 SG Wine Wort Making Beer Brewing Fruit Juice Hops Sugar Homebrew Kit$

REB-32SGATC Beer Brix & Specific Gravity Refractometer with ATC Optic Dual Scale 0~32% Brix 1.000-1.130 SG Wine Wort Making Beer Brewing Fruit Juice Hops Sugar Homebrew Kit

Regular Price $12.90 USD

$REB-90ATC 3-in-1 Honey Refractometer Brix/Moisture/Baume Tester ATC, Tri-Scale 58-90%/12-27%/38-43Be', Sugar Water Content Level Beekeeping Maple Syrup$

REB-90ATC 3-in-1 Honey Refractometer Brix/Moisture/Baume Tester ATC, Tri-Scale 58-90%/12-27%/38-43Be', Sugar Water Content Level Beekeeping Maple Syrup

Regular Price $16.90 USD

Sold Out $REA-503EATC Automotive Refractometer, Ethylene glycol: -60~0°C and 0~100%, Battery Fluid 1.10~1.40kg/l$

REA-503EATC Automotive Refractometer, Ethylene glycol: -60~0°C and 0~100%, Battery Fluid 1.10~1.40kg/l

Regular Price $12.90 USD

$REW-25BATC Grape Fruit Juice Refractometer with ATC, Dual Scale 0-25% VOL 0-40% Brix Optical Tester for Sugar Glucose Homebrew Wine Determine Alcohol Content$

REW-25BATC Grape Fruit Juice Refractometer with ATC, Dual Scale 0-25% VOL 0-40% Brix Optical Tester for Sugar Glucose Homebrew Wine Determine Alcohol Content

Regular Price $12.90 USD

$REA-503CATC 5-in-1 Automotive Battery Antifreeze Refractometer ATC for Specific Gravity, Ethylene Propylene Glycol System & Windshield Screenwash Fluid, Freezing Point Measurement Tester Meter Coolant Condition$

REA-503CATC 5-in-1 Automotive Battery Antifreeze Refractometer ATC for Specific Gravity, Ethylene Propylene Glycol System & Windshield Screenwash Fluid, Freezing Point Measurement Tester Meter Coolant Condition

Regular Price $12.90 USD