- Routine SVI and settleability checks
- Activated-sludge process optimisation
- Bulking or poor-settlement investigation
- Comparing aeration lanes or treatment stages
- Tracking supernatant clarity and floating sludge
- Process scientist and operator site visits
Portable SVI and Sludge Settlement Testing
Turn a small activated-sludge sample into repeatable SVI, settlement and clarity information without manual bucket tests.
What does SVI and settlement show?
Sludge Volume Index relates the settled volume of sludge after a defined settling period to its mixed liquor suspended solids concentration. Used with settlement behaviour and clarity observations, it helps treatment teams assess changes in activated-sludge settleability.
Read the S3A sludge-settlement measurement guidance for authoritative background. Return to our portable water-quality parameters guide to compare other measurements, or visit PMA for wider water and wastewater instrumentation support.
Where portable SVI and settlement testing is useful
Keep sampling consistent
Use a representative activated-sludge sample from a defined point and record the treatment stage and collection time. Read SVI together with MLSS, settled sludge level, supernatant clarity and floating-sludge observations. Follow the S3A preparation procedure for each test.
Portable instruments for SVI and settlement
The correct instrument depends on the measurement method, expected range, water matrix, other parameters and how results need to be recorded.
S3A suspended solids analyser
Automates a 210 ml sample test and reports MLSS, settled sludge level, SVI, supernatant clarity and floating sludge, with optional stirred measurements.
Best for: repeatable small-sample settlement analysis without manual calculations.
View S3A
Check the application before selecting
Tell us the sample type, expected range, test frequency, site conditions and how the result will be used. We will confirm the method, instrument configuration and supporting items before quotation.
What to include in your enquiry
- The sampling points and water or sludge type.
- The expected result range and reporting units.
- How often you test and which other measurements you need.
- The instrument or laboratory method used for comparison.
Share an example of your current test record and any practical constraints at the sampling point. This helps us review the complete workflow, including preparation, verification, accessories and result handling.
Keep sample collection consistent
Use a representative activated-sludge sample from a defined point and record the treatment stage and collection time. Follow the S3A preparation procedure for each test.
Ask our team
Not sure which SVI and settlement option fits?
Tell us what water you are testing, the expected range, where the measurement will be made and which other parameters matter.
Portable SVI and settlement testing FAQs
What does portable SVI and settlement testing show?
Sludge Volume Index relates the settled volume of sludge after a defined settling period to its mixed liquor suspended solids concentration. Used with settlement behaviour and clarity observations, it helps treatment teams assess changes in activated-sludge settleability.
Where is portable SVI and settlement testing useful?
Common uses include routine svi and settleability checks, activated-sludge process optimisation, bulking or poor-settlement investigation, comparing aeration lanes or treatment stages. The best sampling point should always be chosen around the decision the result needs to support.
Which portable instrument can measure SVI and settlement?
S3A suspended solids analyser is the current Portable Analyser option shown for this parameter. Its suitability still depends on the method, range and sample.
Can a portable result help verify an online analyser?
Yes. A carefully collected portable result can provide an independent spot check during commissioning or investigation. Sampling location, timing, preparation and method differences must be considered before comparing readings.
What information should I provide before requesting a quote?
Share the water type, expected range, sampling location, testing frequency, other required parameters, record-keeping needs and any site constraints. This helps PMA confirm the complete practical package.
Can PMA help select the correct method and equipment?
Yes. PMA can review the application, expected conditions, measurement method, reagents or sensors, calibration needs and supporting accessories before quotation.
To contact us, or to request a callback, simply use the form below and we will promptly get back to you.
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