Time-Kill Tests

Standard Time-Kill test (ASTM E2315)

A Standard Time-Kill (STK) is a laboratory test which measures the antimicrobial performance of a liquid sample over a short period of time. The kill test quantifies the reduction in numbers of a known inoculum of microorganisms over specified contact times. This method determines the effective kill rate of a finished product, usually expressed as a % (for example, “kills 99.9% of bacteria in 30 seconds”).

Suitability of test

Test Details

ASTM E2315
Exposure times 30s, 1m, 2m, 3m, 5m
Sample required (g) 250
Total Species 4/5
Staphylococcus aureus
Pseudomonas aeruginosa
Enterococcus hirae
Escherichia coli
Candida albicans

Test Species