Returning Samples?
The last date for receipt of samples for Microbiology Analysis is Friday 19th December. Last return date for Chemistry Analysis to be reported before Christmas is 8th December.
Feedwater Labs will reopen on 5th January 2026. Dismiss
This product contains Sulphuric Acid and due to changes brought in by ‘Control of Explosives Precursors and Poisons Regulations 2023’ Feedwater is now required to ask customers to fill out a form and provide photographic ID to be kept on file for 18 months. We have decided to make this product POA and only process orders once these required details are provided. Please contact usfor further information and to order.
Feedwater recommends treating boilers to gain a result of 12 – 20 tannin units using the tannin test kit.
1 drop in 20ml of sample equals 2 tannin units or 20ppm, see the test method of further instructions.
All of the reagents are available to buy as spares separately using the drop down menu.
Tannin titration can be used to find out corrosion inhibitor levels from Feedwater Tannin products.
Relevant Products
Polytan 4C – a blended liquid treatment based on organic tannins, polymer sludge, conditioners and alkali. Polytan 4F – as above but with the suitability for systems containing COPPER. Heritage Steam Tannin – Polytan 4F marketed to the heritage steam market.
Don’t forget to download the titration test method here
