Corynebacterium diphtheriae

Sharp 1939 · 254 nm

Bacterium (vegetative) Water 254 nm Gram-positive rod

Test conditions & context

Type Bacterium (vegetative)

Medium Water

Test wavelength 254 nm

Particle size 2000 nm

Author Sharp

Year 1939

UV-C dose–response (D-values)

A D-value is the UV-C dose (in mJ/cm²) needed for a given log-reduction. D90 = 90 % inactivation = 1-log; D99 = 99 % = 2-log; D99.9 = 99.9 % = 3-log, and so on. Values come from the cited study under its specific test conditions.

Reduction log Dose (mJ/cm²)

D90 90 % 1-log 3.4 mJ/cm²

Primary source

Sharp (1939). iuva.org/resources/Resource%20Documents/Malayeri-Fluence%20Required%20to%20Achieve%20Incremental%20Log%20Inactivation%20of%20Bacteria%2C%20Protozoa%2C%20Viruses%20and%20Algae.pdf

← UV-C germ database