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Table 1 Active ingredients and contact times for disinfectant towelettes tested in this study

From: Disinfectant wipes transfer Clostridioides difficile spores from contaminated surfaces to uncontaminated surfaces during the disinfection process

Disinfectant product a

Disinfectant active ingredient(s)c

Dilution at use

Active level at usee

Label contact time (mins)f

SHb

1.312% sodium hypochlorite

RTUd

1.25%

4

HP1

1.4% hydrogen peroxide

RTU

1.4%

1

HP2

0.5% hydrogen peroxide

RTU

0.5%

1

HP3

0.5% hydrogen peroxide

RTU

0.5%

1

QA1

0.25% n-alkyl (68%C12, 32%C14) dimethylethylbenzyl

ammonium chloride

0.25% n-alkyl (60% C14, 30% C16, 5%

C12, 5% C18) dimethyl benzyl ammonium chloride

55% isopropanol

RTU

0.5%g + 55%

2

QA2

0.76% didecyldimethyl ammonium chloride

15% isopropanol

7.50% ethanol

RTU

0.76%g + 22.5%

1

QA3

0.233% disobutylphenolxyethoxyethyl dimethyl benzyl ammonium chloride

14.3% isopropanol

RTU

0.233%g + 14.3%

2

  1. aAbbreviated naming scheme for commercially available EPA registered disinfectants used in this study
  2. bControl disinfectant with C. difficile claim
  3. cActive ingredients concentration
  4. dReady-to-use
  5. eActive ingredient concentration after dilution
  6. fDefined label contact time
  7. gTotal quaternary ammonium plus alcohol content