Langelier/Ryznar Index Water Analysis

£154.00 exc. VAT

Analysis Includes:

  • Test includes:
  • pH
  • Total Dissolved Solids
  • Calcium Hardness
  • Alkalinity
  • Chlorides
  • Langelier and Ryznar Index

For Measuring the Scaling or Corrosive tendencies of water

Sample pack comes with prepaid return label & envelope.

Lead Time: Up to 12 working days

Description below.


Multi buy discounts available.

10% discount for 6-10 samples and 15% discount for 11+ samples.

Langelier/Ryznar Index Water Analysis

The Langelier Saturation Index calculates the level of saturation of calcium carbonate in water.

The optimal level is 0.0 LSI, though a plus/minus of 0.3 is generally acceptable. A negative LSI indicates the water is undersaturated, meaning the water may potentially be corrosive, dissolving existing scale and attacking unprotected metal.

A positive LSI, on the other hand, indicates oversaturated water, meaning the water could cause scaling and lead to a build-up of calcium deposits.

The Langelier Ryznar Index is often used to test Pool Water, Domestic Systems and Industrial Cooling Water but can be a relevant test in pretty much any water system.

Test includes:

  • pH
  • Total Dissolved Solids
  • Calcium Hardness
  • Alkalinity
  • Chlorides
  • Langelier and Ryznar Index

We ask that the client makes a note of the water temperature reading at the time of sampling provide the lab for additional result accuracy.


Feedwater is an industrial water treatment company with consultants across the UK, if after your results you would like expert advice, we can arrange for a free site visit by one of our knowledgeable consultants to discuss system protection, ideal treatment and efficiency.


Sample point should be flushed prior to taking sample to ensure fresh system water is taken.

Safety precautions should adhere to when sampling, if in doubt seek advice.

Kit contains:

  • 1x 1l sample bottle
  • 1x return jiffy bag and pre-paid return label
  • 1x Analysis sticker to be filled in

Analysis can typically take up to 10 days from receipt of sample, if results are needed urgently please contact us to query turn around time, a surcharge may be applied for samples to be fast tracked.

Other Tests

Servicing options and contracts available

Take advantage of Feedwater’ servicing options and contracts when you buy our chemical products.

Chemistry and other Micro Sample Kits available

Additional information

Weight 0.10 kg

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