Suspended solids & SVI analysis.Discover S3A

AccuSeries online colorimetry

Automated colour-development analysis for water, wastewater and industrial process streams.

A controlled colour reaction beside the process

Colorimetry relates a developed colour to the concentration of a target constituent. AccuSeries automates the sample volume, reagent sequence, reaction timing, optical measurement and calculation for the selected analytical method.

Reagents, wavelength, measuring range and interferences remain specific to the analyte and sample. The brochure describes dual-wavelength measurement for suitable methods; background colour and turbidity still belong in the application review.

PMA colleague reviewing an AccuSeries analyser with water treatment tanks visible outside.

Plan the analytical method

Capture a representative sample

Define the sampling point, transport conditions, sample preparation and analytical volume.

Develop and measure the colour

Run the specified reagent sequence and reaction time before the optical measurement.

Calculate and verify the result

Apply the configured calibration and check standards and representative reference samples.

Typical application reviews

Nutrients and treatment chemistry

Review ammonia or phosphate chemistry against the required reporting form and sample matrix.

Metals in water and effluent

Review aluminium, iron and other selected metals using a suitable colour-development method.

Wastewater and process streams

Consider sample colour, solids, process additives and preparation before bringing a method online.

The selected chemistry, range and preparation must represent the actual sample. Online process information supports the agreed operating decision and verification plan.

Prepare an application review

Share the analyte and chemical form, reporting units, normal and upset range, sample composition, colour and solids, temperature, transport conditions, reference method, required result frequency, number of streams and outputs. Include maintenance access, reagent replenishment and waste handling.

Over 50 years of process measurement experience

PMA has supported process measurement and analysis since 1971. We connect your analytical objective with the sample, instrument, installation and operating team.

Talk to us about application review, commissioning, training, service and ongoing reagent supply.

Resources for your project

AccuSeries brochure

Read the public PMA brochure for the platform, measurement methods, configuration overview and UK support.

View brochure PDF

Specialist AccuSeries guidance

Continue with detailed technical and application guidance on our dedicated AccuSeries website.

Visit accuseries.co.uk

Find a parameter or product

Search PMA’s parameter, product and application finder using your analyte, method or operating duty.

Search parameters and products

Frequently asked questions

Does one colorimetric method measure every parameter?

No. Each analyte needs appropriate reagents, wavelength, timing, calibration and interference review. A configurable platform does not make every chemistry interchangeable.

Can coloured or turbid samples be analysed?

Suitable methods may use blanking or dual-wavelength measurement. Sample colour, suspended solids and chemical interferences must still be assessed for the actual range and matrix.

Which result should be compared with the laboratory?

Compare the same analyte form, sample preparation and reporting units using representative samples. Agree the reference method and acceptance criteria during commissioning.

Continue exploring AccuSeries

AccuSeries analyser overview

Compare the platform, industries, technical overview and public application notes.

View the AccuSeries range

Online titration

Measure a defined titratable quantity using controlled reagent addition and optical or potentiometric endpoint detection.

Explore titration

Ion-selective electrode analysis

Match the electrode, sample conditioning and calibration to the target ion and required reporting basis.

Explore ISE analysis

Multi-stream and multi-parameter analysis

Review whether one platform can serve several sample points and analytical duties with a suitable measurement sequence.

Explore multi-stream analysis

Let’s talk about your application.

Speak to the PMA team about your instruments, reagents or service requirements. Tell us what you need, and we’ll help you find the right next step.

  • Advice for your application. Find the right instruments, sensors and chemical reagents for your process.
  • Practical service support. Discuss commissioning, calibration, maintenance or an instrument issue with our team.
  • Clear next steps. Ask a technical question or request a callback, with your site and measurements in mind.
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