Field Notes
Industrial Oil Skimmers: 5 Types Compared for Wells, Sumps, and Coolant Tanks
Five real oil skimmer types compared — passive well recovery, open-water, pit, industrial wastewater interface, and CNC coolant sump — matched to the right application.
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Oil/Water Interface Meters: How to Detect LNAPL and DNAPL in Monitoring Wells
An interface probe measures LNAPL and DNAPL layer thickness in a monitoring well. Compare Heron H.Oil vs. Solinst 122 interface meters. Quote from ERE.
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Well Development for Monitoring Wells: How to Surge and Purge
Well development clears silt and mud cake from a new monitoring well's screen before it can produce a representative sample. How surging with a Waterra...
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Sludge Blanket Monitoring: Sludge Judge vs. Sludge Gun Compared
Compare the Sludge Judge core sampler and Sludge Gun optical detector for measuring sludge blanket depth in clarifiers and lagoons — and which one fits...
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Water-Finding Paste: How to Detect Water in Fuel Storage Tanks
Water-finding paste turns red on contact with water in a fuel storage tank. How it works, how to gauge a tank, and which Kolor Kut...
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Sewer Dye Testing: How to Detect Illicit Connections and I&I Sources
How to run a sewer dye test to detect illicit sanitary/storm cross-connections, I&I sources, and septic leaks -- Bright Dyes tablet and liquid formats compared...
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Low-Flow Groundwater Sampling: Peristaltic Pump Selection Guide for Canada
Low-flow purging draws water at 100–500 mL/min from mid-screen depth for a cleaner, more representative sample. Compare 4 peristaltic pumps ERE stocks and learn the...
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Air Sampling Cassette Types Compared: Air-O-Cell vs. Allergenco-D vs. Micro5 vs. PCM
Air-O-Cell, Allergenco-D, Micro5, or a PCM filter cassette: which one do you actually need? A flow-rate and contaminant-type comparison for environmental and industrial hygiene sampling.
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Fixed Gas Detectors: A Buyer's Guide for Canada
Fixed gas detectors for continuous monitoring: RKI Beacon controllers, point & sample-draw sensors, Ion Science VOC/benzene monitors. Quote from ERE Canada.
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