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Interscan: Why We're Different

Ed. note: This is typical of initial communications with potential reps and distributors... Interscan Corporation is a privately held manufacturer of gas detection instrumentation and related software, founded in 1975. The compan[...more]
How NOT to do data logging

How NOT to do data logging

Allowable exposure to toxic gases in nearly all cases involves time-weighted averages (TWA). Generally, these are calculated over an eight hour period. For Short Term Exposure Limits (STEL), this time period becomes 15 min[...more]
There's more to gas detection than confined entry

There's more to gas detection than confined entry

I have to admit, it's become sort of a joke around here. At its height, before most of the gas detection companies either got acquired or simply disappeared, there were nearly 50 of them, most of which sold (yawn) portable [...more]
Atmospheric Pressure Corrections on Interscan Instruments

Atmospheric Pressure Corrections on Interscan Instruments

Atmospheric Pressure Corrections on Interscan Instruments   When a gas concentration is measured or reported, we may talk in terms of ppm, but in reality we are measuring the partial pressure of the gas. (Refer to Dalton'[...more]
Permeation devices

Permeation devices

How To Use Permeation Devices (courtesy of VICI Metronics, Inc.) Permeation devices provide an excellent method of producing known gas concentrations in the PPM and PPB level for calibration of analytical instrumentation. The ba[...more]
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Monitoring the Interior of the EtO Cartridge Flammable Storage Cabinet

Within sterile processing departments, the predominant modality for ethylene oxide sterilization is the sealed EtO cartridge approach, as sold by 3M. In its Product Profile on the Steri-Gas™ EO cartridges, 3M puts forth these reco[...more]
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Errant use of gas chromatography for area monitoring of ethylene oxide in SPD departments

In recent months, we have seen certain people touting systems using gas chromatography (provided with a photo-ionization detector) for area monitoring of ethylene oxide in Supply, Processing, and Distribution (SPD) departments. [S[...more]
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When is a part-per-billion (ppb) NOT a part-per-billion (ppb)?

As if it weren't bad enough that clueless environmental authorities try to impose their ignorance on the field by using so-called "metric" units of gas concentration, another trap may be lurking for you. Everyone around the world[...more]
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More on Expressing Gas Concentrations

This is a follow-up to our earlier article on Using Common Sense and Science in Expressing Gas Concentrations, inspired by a real-life adventure of one of our sales engineers. As our hero was slogging through some e-mail inquirie[...more]
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Understanding Danger

The dictionary defines "danger" as "the state of being exposed to harm : liability to injury, pain, or loss." Typically, gas detection is deployed in areas that contain potential danger. This danger may result from some sort of u[...more]