Uniphos Envirotronic Inc.

Manufacturer, supplier and exporter of gas detection & gas monitoring equipment

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Sign up for our free Uniphos gas tube handbook

July 26, 2017 by Uniphos

Uniphos Pump Swap Program

The Uniphos Gas Detector Tube Handbook is a handy reference, packed with all the information about our Uniphos gas detector tubes.

Our handbook provides details on target gases, interfering gases and cross sensitivities.  We currently have over 200 different tubes including short-term and long-term tubes.

The short-term detector tube system consists of Uniphos Detector Tube and Uniphos Precision Air Sampling Pump (ASP-40). Together they form a short-term detector tube measurement system. Short-term detector tubes measure the gas concentration existing at the point of measurement at that instant of time.

Uniphos detector tubes are glass tubes with a length of 150 mm and outside diameter of 5 mm which are filled with an inert carrier material impregnated with an indicator to produce a colorimetric reaction, the tubes are hermetically sealed at the factory. They show color change when the sample air is drawn through it after breaking both the ends of the tube. A piston and barrel type pump (Uniphos Precision Air Sampling Pump) is used to draw the sample air through the tube. They are pre-calibrated using gas standards. The printed calibration scale enables the user to know the target gas concentration directly after the sampling.

Our long-term tubes come in two forms: Dosimeter tubes or Time Weighted Average (TWA) tubes which produce a color change as the gas molecules diffuse into the tube and charcoal tubes which are used with a constant flow pump to collect the vapor molecules of organic compounds. 

While the short-term detector tubes give the instantaneous concentration of target gas at the time of measurement, Dosimeter tubes or Time Weighted Average (TWA) tubes give a stain length, which is proportional to the concentration over the time of exposure.

The charcoal tube is a glass tube filed with two layers of activated coconut shell charcoal and sealed at both ends. One of the layers is an active layer (sorbent layer) and the second one is the breakthrough layer. It is used for determining organic vapors like benzene, toluene xylene etc. in the atmosphere. Charcoal tubes are analyzed in a laboratory using various analytical methods.

Our detailed handbook outlines procedures for using both types of tubes, as well as dealing with storage and disposal. The handbook also explains calibration gas generation methods and gas concentration units and their conversions.

You will find the manual online or you may contact us to sign up for a free copy mailed directly to you.

Filed Under: News, What's New Tagged With: detector tubes, gas detection, Gas detector tubes, handbook, safety, Uniphos

Thank you to emergency responders during Fire Prevention Week

October 4, 2020

For almost 100 years, Fire Prevention Week has been an opportunity for awareness and education, and despite the global pandemic, this year is no exception. As Fire Prevention Week 2020 gets underway on October 4, Uniphos … Read More...

Update from Uniphos about COVID-19

June 25, 2020

As part of our commitment to keep customers informed during the COVID-19 pandemic, Uniphos Envirotronic Inc. would like to share that our US warehouses are now fully stocked, and delivery times have returned to pre-COVID … Read More...

Uniphos Envirotronic Inc.

Based in Sugar Land, Texas, Uniphos Envirotronic Inc., is a subsidiary of Uniphos Envirotronic Pvt Ltd., which is one of the leading manufacturers, suppliers and exporters of gas detection & monitoring equipment as well as being a distributor of gas sampling bags and calibration gas. With its expansion to the U.S., Uniphos Envirotronic Inc. has a highly experienced team ready to work with you. Contact us today to discuss how we can meet your needs.

Product Line

  • Gas Detector Tubes & Strips
  • Digital Gas Transmitter
  • Gas Sampling Bags
  • Fumigation Gas Monitors
  • Calibration Gas
  • Personal Gas Detectors
  • Online Store

Contact Information

  • Uniphos Envirotronic Inc.
    19901 Southwest Freeway
    Sugar Land, TX  77479
  • 1.844.247.0450 (toll free)
  • 1.832.956.0800 (local)
  • 1.832.500.3718 (fax)

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