We tested the brands on quality and acceptability parameters. These included quaternary ammonium compound (QAC) content, cleaning properties, pH level, stability, non-volatile matter, odour and colour. Of the eight brands, six are QAC-based.
The samples were tested as per specifications in Indian Standard 14364: 1996 (reaffirmed in 2013) related to quaternary ammonium compound-based surface cleaners. We followed the standard test methods at an NABL-accredited laboratory.