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Field Notes

Gloved hands taking a reading with a colorimetric gas detection tube and hand pump
August 25, 2026

Gas Detection Tubes: A Buyer's Guide for Canada

By ERE Inc.

Gas detection tubes are glass or plastic tubes filled with a chemical reagent that changes color when a specific gas passes through it — you...

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Handheld photoionization detector used at an industrial facility in Canada
July 26, 2026

Photoionization Detectors (PID): A Buyer's Guide for Canada

By ERE Inc.

A photoionization detector (PID) uses ultraviolet light to detect volatile organic compounds (VOCs) and other easily-ionized gases at concentrations as low as parts-per-billion — far...

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Calibration gas cylinder with demand-flow regulator connected to a portable gas detector
June 19, 2026

Calibration Gas: Types, Mixtures, and How to Choose

By ERE Inc.

Calibration gas is the certified reference a gas detector is measured against — and choosing the wrong mixture, concentration, or cylinder quietly undermines every bump...

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Safety technician bump testing a portable gas detector with a calibration gas cylinder
June 19, 2026

Bump Test vs Calibration: The Gas Detector Maintenance Guide for Canada

By ERE Inc.

A bump test and a calibration are not the same thing, and confusing them is how a gas detector ends up trusted when it shouldn't...

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Technician connecting calibration gas cylinder to portable gas detector in calibration laboratory
May 31, 2026

Gas Detector Calibration in Canada: Requirements, Schedule & Best Practices

By ERE Inc.

A gas detector that hasn't been calibrated recently is worse than no detector — it gives false confidence. In Canada, calibration requirements for portable gas...

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Environmental consultant checking gas detector before confined space entry at industrial facility
May 31, 2026

Gas Detector Rental in Canada: What to Know Before You Rent

By ERE Inc.

Gas detector rental makes sense when your project window is short, your instrument requirements change job to job, or you cannot justify the purchase price...

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Safety officer using portable 4-gas detector at confined space entry on industrial site
May 28, 2026

Portable Gas Detectors: Buyer's Guide for Canada | ERE

By ERE Inc.

A portable gas detector is the last line of defence between your workers and an atmosphere that can kill in seconds. Choosing the wrong instrument...

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