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Field Notes

Brilliant fluorescent yellow-green fluorescein dye plume dispersing through clear water
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Fluorescein Dye: Colors, Detection, and Uses in Water Tracing

What fluorescein dye is, why it glows green, how low it can be detected, and when to use it for water tracing and leak detection versus red or blue. ERE...

June 19, 2026 · ERE Inc.
Field technician pouring fluorescent green tracer dye into a stormwater channel
June 19, 2026

Fluorescent Tracer Dyes: Leak Detection and Water Tracing Guide for Canada

By ERE Inc.

How to choose and use fluorescent tracer dyes for leak detection, sewer tracing, and flow studies — colors, formats, detection limits, and NSF 60 safety....

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