Wastewater Analysis -Recommended Instruments

Both Discrete and Continuous Segmented Flow Analyzers can be used for wastewater analysis. The best instrument for the chemical analysis of water will depend on your daily and weekly sample throughput, space, number of analyses, automation level required and detection limits required. By selecting a wastewater analyzer designed and manufactured by SEAL Analytical you're choosing an analyzer designed specifically for environmental laboratories and supported by over 50 years experience. All our analyzers offer USEPA, AOAC and ISO compatible methods. Please contact us to discuss your situation.

Wastewater analyzer AA500 Autoanalyzer
QuAAtro for the chemical analysis of water
AQ400 Discrete Analyzer for water chemistry analysis

Continuous Segmented Flow Analyzers

For laboratories in wastewater treatment plants, private testing laboratories, or research facilities, when you automate your wet chemistry analysis you bring a previously unattainable level of sensitivity, speed and precision to your wastewater analysis. All analyzers are supplied with detailed method descriptions, including reagent make up, flow diagrams, and specific application notes.

Wastewater compliance monitoring brochure

Wastewater Analysis Methods

  • SEAL has an extensive library of over 1000 methods for the automated chemical analysis of water.
  • USEPA, AOAC and ISO compatible methods available.
  • USEPA methodologies for automated colorimetric analysis reference the Technicon AutoAnalyzer II (this model has been replaced by the AutoAnalyzer 3)
  • Each method is multi-range, giving the ability to set up your desired range.
  • Dialyzers are sometimes used to stop any color interference and/or dilution
  • Methods used with older AutoAnalyzer II and TrAAcs systems are completely transferrable to current model AutoAnalyzers.

The Multitest Manifold Advantage

Typical Wastewater Parameters

We have an extensive list of methods for nutrient analysis in wastewater, the list below is a partial list of the most common methods. Contact us for a complete list.

Alkalinity  Ammonia (salicylate) Ammonia (phenate)
Boron Bromide Calcium
Chloride Chromium Fluoride
Hardness Iron Iodide
Magnesium Manganese Nicotine
Nitrate Nitrite Nitrogen, total (NH3, NO3)
Nitrogen, Total Kjeldahl Phenol Phosphate
Phosphate (molybdovanadate) Phosphorous, Total Kjeldahl Potassium
Silicate Sodium Sulfide



US EPA Approved Methods

AQ2 - USEPA Approved Methods


Discrete Analyzers

These compact nutrient analyzers are ideal for wastewater analysis with a large library of methods specifically for environmental analysis and including analytes important in wastewater.

Automated Wastewater compliance monitoring brochure

Nutrient Analyzer Methods

  • Over 30 methods specifically for the environmental market
  • Our stated detection limits will be achieved by typical laboratories. Many users exceed these detection limits.
  • We have individual letters of USEPA approval confirming our methods are acceptable for wastewater (NPDES)  compliance monitoring. Contact SEAL Analytical for copies of our individual approval letters.
  • SEAL UKAS Methods are Equivalent to "UK Blue Book"
  • UKAS methods applied to our Discrete Analysers are traceable to methods published in the series "Methods for the Examination of Waters and Associated Materials", produced by the Standing Committee of Analysts in the UK. The methods are acceptable for both drinking water and wastewaters according to criteria set by the UKAS (United Kingdom Accreditation Service) and the DWI (Drinking Water Inspectorate).
  • List of Discrete Analyzer methods