Field Notes
Fixed Gas Detectors: A Buyer's Guide for Canada
A fixed gas detection system is a permanently mounted detector wired to a controller that continuously watches one or more locations for combustible, toxic, or oxygen-deficient atmospheres — no one...
Gas Detection Tubes: A Buyer's Guide for Canada
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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Water Level Meters: A Buyer's Guide for Canadian Groundwater Monitoring
Solinst 101 Basic, P2, P7, DrawDown, and Model 102 water level meters compared — probe type, tape material, and which model fits your monitoring program.
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Landfill Gas Monitoring Equipment: A Buyer's Guide for Canadian Facilities
Compare the QED GEM5000, Geotech GA5000, and QED BIOGAS 5000 landfill and biogas analyzers — CH4/CO2/O2 monitoring, certifications, and buy-vs-rent guidance for Canadian facilities.
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What Is a Barologger? Barometric Compensation for Water Level Dataloggers Explained
A barologger is a small datalogger that records only atmospheric pressure and temperature, deployed above the water table so software can subtract barometric noise from...
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Water Level Data Loggers: Buyer's Guide for Canadian Groundwater Monitoring
Water level data loggers record groundwater and surface water level continuously between site visits. This guide compares absolute vs. vented models, depth ranges, and battery...
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Photoionization Detectors (PID): A Buyer's Guide for Canada
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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Indoor Air Quality Monitoring for Commercial Buildings: A Buyer's Guide for Canada
Choosing an indoor air quality (IAQ) monitor for a commercial building comes down to three decisions: which parameters you need to measure (CO₂, PM2.5/PM10, VOCs,...
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