Table 2

Comparison of cyst age and assay method on disinfection efficacy (log reduction) after 6 hours of exposure

Disinfectant, assay method, and log cyst kill
Opti-Free expressOxysept 1StepOxysept 1
Cyst type and ageI II IIIIII
Neff 0.5 day2.02.01.81.83.84.8
Neff 1 day1.51.12.01.93.54.8
Neff 7 day0.30.31.50.83.33.5
NNA-E coli 7 day0.50.31.30.84.33.7
  • Microtitre plate assay;

  • agar overlay plaque assay.