chemical symbols

Detergent selection

The performance of a detergent relies on the selection of its chemistry to suit the soils encountered.

When selecting the correct product for an application it is essential to identify: the soiling to be removed, the materials of construction and therefore chemical compatibility of the surface the soiling is sitting on, site water hardness and chemistry, water temperature, method of application and effluent handling.


Light duty cleaning

Break or interim cleaning products, often detergent disinfectants, remove light debris while reducing microbial contamination. With a benefit of minimising water these products, sometimes alcohol based, are applied by fine spray from a trigger in combination with a disposable wipe or by using a hygiene wipe.

Our QAC biocide, either water or alcohol based, products are most commonly used however if MRL (Maximum Residual Level) issues are a concern then the range of non-QAC products should be used.


Proteins and tannins

In the brewhouse, deposits of protein/tannin can are generally tackled with caustic based detergents. This may be a caustic with threshold scale control in soft water areas or a caustic EDTA or caustic gluconate formulation in higher water hardness areas. An additional problem in mash and lauter tuns is caused by the husk of the grain, and again, this responds to prolonged caustic treatment.



Although deposits are never a single compound beerstone is largely made up from calcium oxalate. In fermenting vessels protein/tannin deposits are often combined with beerstone. Generally EDTA based detergents are more effective at removing beerstone deposits than acid based detergents.

In the majority of maturation tanks, the main soiling issue is again, beerstone, whilst some may have heavy yeast deposits. Beerstone remains the main potential issue in kegs and the keg filling plant, however casks and cask racking lines can also carry unwanted deposits of yeast and proteins.


Cleaning in Place (CIP)

In general, most process systems that are cleaned in place are constructed of stainless steel with a variety of polymers used as seal materials. This and the fact that during cleaning operatives are not exposed to the cleaning solutions allow the use of highly alkaline or highly acidic products.

With highly caustic products sequestration is important for control of mineral scale drop out from water hardness. With certain processes, the removal of soils containing high levels of calcium (for instance milk based proteins) is greatly improved by the use of specific sequestrants.



Minerals from water or the product can form scale which shows up typically as a white deposit. Our alkaline product ranges are formulated to enable the correct product to be chosen to cope with this mineral challenge. In certain cases, however where deposits have formed, correctly chosen acid based products will remove the deposit. Challenges on effluent discharge with traditional phosphoric and nitric acid (due to low or zero P & N consents) can be overcome with our acid Nopac range of detergents.