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Gain Express - Huge Savings! Save up to 13%


Huge Savings! Up to 13% off on Gain Express products at Humble Opinion. Hurry! Limited time offers. Offers valid only while supplies last.



Enaly OZX-300ST 500mG/hr O3 Ozone Generator with Air Dryer/Timer/Adjustable Output, Air Quality Purifier Clean Food Sterilization
Enaly OZX-300ST 500mG/hr O3 Ozone Generator with Air Dryer/Timer/Adjustable Output, Air Quality Purifier Clean Food Sterilization
In Stock
$91.90

mpn: OZ-004, ean: 0600316559775,

It is all digitally controlled. It provides a soundless ozone output because of the higher frequencies that was used in the power source. Application: *Water purification *Odor elimination in indoor environment *Kill gems, pesticides and bacteria, ...


Professional Digital Manometer, Portable Handheld Air Vacuum/Gas Pressure Gauge Meter 11 Units with Backlight, ±13.78kPa ±2PSI, Suitable for Differential Pressure of 1-2 Pipes, Ventilation HVAC
Professional Digital Manometer, Portable Handheld Air Vacuum/Gas Pressure Gauge Meter 11 Units with Backlight, ±13.78kPa ±2PSI, Suitable for Differential Pressure of 1-2 Pipes, Ventilation HVAC
In Stock
$37.90
$32.90
You Save: 13%

mpn: MAN-45, ean: 0600316547833,

Measures air pressure of the single pipe or differential pressure of 2 pipes. Has 11 selectable units of measurement kPa, psi, kgfcm2, ozin2, bar, mbar, inHg, mmHg, inH2O, ftH2O, cmH2O.Best for measuring the ventilation and air condition systems. Wid...


Ultrasonic Leak Warner and Transmitter Quick location of Air,Water,Dust leaks with Earphone
Ultrasonic Leak Warner and Transmitter Quick location of Air,Water,Dust leaks with Earphone
In Stock
$68.50

mpn: 1, ean: 0701936208699,

Ultrasonic Leak detector is design to locate leaks in pressure and vacuum systems. It can be used to detect and locate the source of ultrasonic emission generated by gas or liquid flowing through a small restrictive opening. In conjunction with Ultr...


Digital Handheld Formaldehyde HCHO Meter 0~5mg Temperature Humidity Monitor Indoor Home Air Quality Portable Tester
Digital Handheld Formaldehyde HCHO Meter 0~5mg Temperature Humidity Monitor Indoor Home Air Quality Portable Tester
In Stock
$161.90

mpn: HCH-22, ean: 0600316559485,

Applications: Widely used in furniture, floorboards, wallpapers, paint, gardening, indoor decorations, construction, dye stuffs, paper manufacture, pharmaceutical, medical, food, cleaning, synthetic resins, textile treatment, horticulture and cosmet...


Carbon Dioxide Sensor Meter Tester 9999ppm CO2 Temperature RH Measurement
Carbon Dioxide Sensor Meter Tester 9999ppm CO2 Temperature RH Measurement
In Stock
$169.00

mpn: M0198132S, ean: 0701936209955,

This portable USB interface on line logging CO2, Thermo-hygrometer is used to measure CO2 Concentration, Air Temperature and Relative Humidity with audible warning . It is an ideal for Indoor Air quality ( IAQ ) diagnosis.This meter also measures Dew...


Air Quality Meter Carbon Dioxide CO2 Sensor Warner Meter Tester Desktop Table Monitor (220V)
Air Quality Meter Carbon Dioxide CO2 Sensor Warner Meter Tester Desktop Table Monitor (220V)
In Stock
$141.90

mpn: M0198130_220V, ean: 0600316560566,

Features: Six (6) smiley icons indicating indoor air quality levels (350/450/700/1000/2500/5000ppm) to easily know CO2 concentration RH humidity sensor is very accurate without calibration Displays TWA, STEL and vent rate (Ips% or cfm/p) Manually...


Air Quality Tester 0~9999ppm Carbon Dioxide Sensor Meter Tester 9999ppm CO2 Temperature RH Measurement + CD Software
Air Quality Tester 0~9999ppm Carbon Dioxide Sensor Meter Tester 9999ppm CO2 Temperature RH Measurement + CD Software
In Stock
$169.00

mpn: M0198132S, ean: 0600316558242,

This portable USB interface on line logging CO2, Thermo-hygrometer is used to measure CO2 Concentration, Air Temperature and Relative Humidity with audible warning . It is an ideal for Indoor Air quality ( IAQ ) diagnosis.This meter also measures Dew...



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