The Aquaread Optical Fluorescein Dye Electrode is a highly sensitive digital sensor engineered to track and measure Fluorescein fluorescent tracer dyes in situ. Operating on the principle of narrow-band fluorometry, the sensor projects a targeted excitation light beam at 470 nm directly into the water column. The sub-surface Fluorescein dye molecules absorb this energy and instantaneously emit a shifted fluorescent signal, which the sensor isolates and measures through a tightly filtered 515 nm to 580 nm window to determine parts-per-billion concentrations.
What this electrode offers over universal tracer sensors is its direct, plug-and-play integration within Aquaread’s modular multi-parameter ecosystem. Equipped with ultra-hard, optically polished sapphire windows instead of standard resin or glass lenses, the sensor eliminates calibration drift caused by grit abrasions during high-velocity flow testing. Biofouling and sediment mitigation are tailored as system choices; while entry-level configurations on AP-LITE, AP-2000, and AP-5000 probes operate as static arrays for manual grab sampling, the electrode natively aligns with the motorized central wipers standard on the heavy-duty AP-6000 and AP-7000 platforms for continuous, unattended field logging.
AP-LITE Fluorescein Dye Optical Electrode with 2 Auto-Range scales 0-99.99µg/L or 100-500µg/L. Minimum Level of Detection 0.1 µg/L, Minimum Level of Repeatability 5.0 µg/L
AP-2000 Fluorescein Dye Optical Electrode with 2 Auto-Range scales 0-99.99µg/L or 100-500µg/L. Minimum Level of Detection 0.1 µg/L, Minimum Level of Repeatability 5.0 µg/L.
AP-5000 Fluorescein Dye Optical Electrode with 2 Auto-Range scales 0-99.99µg/L or 100-500µg/L. Minimum Level of Detection 0.1 µg/L, Minimum Level of Repeatability 5.0 µg/L.
AP-7000 Fluorescein Dye Optical Electrode with 2 Auto-Range scales 0-99.99µg/L or 100-500µg/L. Minimum Level of Detection 0.1 µg/L, Minimum Level of Repeatability 5.0 µg/L.
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