Field Notes
Turbidimeter Selection Guide for Environmental Monitoring in Canada
A turbidimeter's job is simple to state and easy to get wrong in practice: match the NTU range and measurement method to your application, then keep the instrument in calibration....
Gas Detector Battery and Sensor Maintenance: A Field Guide for Canada
Most gas detector failures in the field aren't calibration problems — they're maintenance problems that show up as a failed calibration. A sensor that's past...
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How to Use a Sludge Judge Sampler: Tank & Lagoon Sludge Depth Protocol
Reading sludge depth in a clarifier, lagoon, or holding tank comes down to one tool used correctly: lower the Sludge Judge to the bottom, let...
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Filox Filtration Media: Iron, H₂S & Manganese Removal Guide for Canada
Filox filtration media removes iron, hydrogen sulfide (H₂S), and manganese from groundwater without chemical oxidants. If your facility draws from well water or treats contaminated...
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Water & Sediment Grab Samplers: Types & Selection Guide for Canada
The right grab sampler for your application depends on two things: where the sample sits in the water column (surface, mid-depth, or bottom sediment) and...
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Air Stripping for VOC-Contaminated Groundwater: Sizing and Selection Guide for Canada
Air stripping removes volatile organic compounds (VOCs) from contaminated groundwater by transferring dissolved contaminants from the water phase into a stream of air. For Canadian...
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Solinst Levelogger 5: Groundwater Monitoring Guide
The Solinst Levelogger 5 is a submersible water level and temperature datalogger that records groundwater measurements automatically, eliminating the need for repeated manual site visits....
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Industrial Reverse Osmosis Water Treatment: How It Works, When to Use It, and What Pre-Treatment You Need
Industrial reverse osmosis removes dissolved salts, heavy metals, nitrates, and organic compounds from process water — but only when the system is properly sized and...
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Activated Carbon Water Treatment: A Practical Field Guide
Activated carbon water treatment, explained: what GAC removes, GAC vs PAC, EBCT sizing, changeout. A field guide. Request a free sizing review from ERE.
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