Online water quality analyzers for Australian utilities and process plants
Continuous online analyzers for nutrient and contaminant monitoring — currently ranging the nitrate-nitrogen ion-selective analyzer for wastewater discharge compliance. Multi-parameter, free chlorine, residual chlorine, volatile phenol, and ammonium analyzers available via parallel-import quote — contact our technical team for spec and lead time.
1 SKU in stockQuote-first rangeRS485 + 4–20 mA2–4 week delivery
IDOA-NO3Nitrate Nitrogen Online AnalyzerIon-selective · continuousView ›Multi-parameter, free chlorine, residual chlorine, volatile phenol, ammonium, COD, and other online analyzer variants are available via parallel-import quote. Contact our technical team with the parameter, measurement range, and integration requirements.
Why specify an InstroDirect online analyzer?
Online water quality analyzers — distinct from inline sensors — perform discrete continuous measurements on a sampled stream using wet chemistry (colorimetric reagent), ion-selective electrodes, or UV-absorbance methods. They are the right tool when measurement requires a chemical reaction (e.g. free chlorine via DPD colorimetric), when measurement requires sample conditioning (filtration, dilution, temperature compensation), or when regulatory compliance specifies a particular reference method.
Currently in stock — IDOA-NO3 nitrate analyzer
The IDOA-NO3 uses an ion-selective electrode (ISE) to measure nitrate-nitrogen concentration continuously, suitable for wastewater treatment plant discharge monitoring under state EPA reporting requirements. RS485 Modbus output for direct PLC integration. Documented register map available on request.
Quote-first range — what we can supply
Through our parallel-import channel, we can quote the full water-quality online analyzer range against your specification. Common requests:
- Free chlorine and residual chlorine analyzers — colorimetric DPD or amperometric, for drinking water and recycled-water disinfection monitoring
- Ammonium nitrogen (NH4-N) — ion-selective or colorimetric, for wastewater nitrification monitoring
- Multi-parameter analyzers — combined pH, EC, DO, temperature, ORP in a single unit
- Volatile phenol — colorimetric, for petrochemical and industrial wastewater discharge
- COD (Chemical Oxygen Demand) — UV-absorbance or dichromate, for organic loading monitoring
- Automatic samplers — refrigerated 24-bottle composite samplers for EPA-compliance sampling
HACH, E+H, and KROHNE alternative
Tier 1 brands (HACH, Endress+Hauser, KROHNE, Metrohm) dominate online analyzer market share in Australia at typical analyzer price points 2–4× higher than parallel-import equivalents. Where the application allows for an open-protocol Modbus output (rather than locked HACH SC controller integration or proprietary E+H Liquiline ecosystem), parallel-import analyzers from InstroDirect deliver the same continuous-monitoring capability at meaningful cost relief.
Australian compliance
Online analyzers used in drinking-water service align with AS/NZS 4020:2018. Wastewater discharge analyzers meet state-EPA reporting requirements (NSW EPA, QLD DES, VIC EPA, SA EPA, WA DWER) when installed with documented calibration logs and method-verified for the relevant parameter.
Who specifies InstroDirect online analyzers?
Wastewater treatment plants
IDOA-NO3 nitrate analyzer on final-effluent EPA reporting; quote-supplied ammonium analyzer on nitrification monitoring; quote-supplied COD on plant load monitoring.
Drinking-water utilities
Quote-supplied free chlorine analyzers at filtration and distribution points; quote-supplied multi-parameter at treatment plant outlets.
Recycled-water and reuse plants
Quote-supplied chlorine and turbidity analyzers for AWQA / Class A recycled water monitoring.
Mining and industrial wastewater
Quote-supplied analyzers for site-specific contaminant monitoring under state-EPA discharge licences.
Request a quote
Send us the parameter, measurement range, sample-handling requirements, and PLC platform. Contact our technical team or call 0403 082 383.
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