Field Notes
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 what you are sampling (open...
Soil & Groundwater Remediation Equipment for Canada: A Consultant's Guide
Selecting the right remediation technology for a contaminated site in Canada depends on the contaminant type, site geology, regulatory target, and timeline — not on...
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Calibration Gas: Types, Mixtures, and How to Choose
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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Bump Test vs Calibration: The Gas Detector Maintenance Guide for Canada
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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Fluorescein Dye: Colors, Detection, and Uses in Water Tracing
Fluorescein is the bright yellow-green dye most people picture when they think of water tracing — the vivid plume in a stream or storm drain....
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Fluorescent Tracer Dyes: Leak Detection and Water Tracing Guide for Canada
Tracer dyes make invisible water flow visible. Drop the right dye into a storm drain, a septic field, or a process line and you can...
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Coliwasa Samplers: Types, Use, and Selection Guide for Canada
A coliwasa — short for COmposite LIquid WAste SAmpler — is the standard tool for pulling a representative sample from a drum or tank of...
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Drum and Tank Liquid Sampling: Equipment and Methods Guide for Canada
Sampling a drum or tank is not "dip and fill." A representative sample has to capture every phase in the container — the water layer,...
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Confined Space Gas Monitoring Requirements in Canada: What You Need to Know
Canadian workers die every year in confined spaces — not from collapses or falls, but from atmospheric hazards they couldn't see or smell. Oxygen-deficient air,...
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