Biocide Surface Rinsing Studies

DNAL have equipped to conduct surface rinsing tests for Biocidal registration.

Depending on your application we can conduct tests in a variety of sizes and types of surfaces, from small tokens of 5cm x 10cm up to large plates of 50cm x 50cm.

We can currently offer:

  • EPA Method 537 For Drinking Water
  • ASTM D7979 for Waste and Surface waters
  • ASTM D7968 For Soils and routinely modified for other solids
  • DNAL also have experience of the European PFAS testing methods
  • DIN EN 17892
  • DIN 38407-42
  • EU 2023/915
  • EU 2022/1431

Tests can be tailored to represent the application of your product and the most likely surface the product will be in contact with.

Generally Surface measurements will be performed on:-

Untreated surfaces (background level of residues) or surfaces treated only with water (negative control)

Residues treated and not rinsed (to see how much residue would be there without rinsing) and 

Residues treated and rinsed (sample).

DNAL can tailor rinsing studies to meet your exact requirements