NuAire LabGard NU-540-300E, Operation And Maintenance Manual

Page: 55 / 63

OM0280 Page 55 of 63
Rev 3 July/2021
Energies Required to Destroy Some Microorganisms by Ultraviolet Radiation (e)
Mold Spores
Microwatt
seconds
per cm/2
Protozoa
Microwatt
seconds
per cm/2
Penicillium roqueforti 26,400 Paramecium 200,000(a)
Penicillium expansum 22,000
Penicillium digitatum 88,000 Nematode Eggs 40,000(b)
Aspergillus glaucus 88,000
Aspergillus flavus 99,000 Algae 22,000(c)
Aspergillus niger 330,000
Rhizopus nigricans 220,000 Virus
Mucor racemosus A 35,200 Baceriophage (E. Coli) 6,600
Mucor racemosus B 35,200 Tobacco Masaic 440,000
Oospora lactis 11,000 Influenze 3,400(d)
Yeasts
Saccharomyces 13,200
ellipsoideus 17,600
Saccharomyces cerevisiae 13,200
Brewers' yeast 6,600
Baker's yeast 8,800
Common yeast cake 13,200
Bacteria
Streptococcus lactis 8,800
Strep. hermolyticus (alpha type) 5,500
Staphylococcus aureus 6,600
Staphylococcus albus 5,720
Micrococcus sphaeroides 15,400
Sarcina lutea 26,400
Pseudomonas fluorescens 7,040
Escherichia coli 7,040
Proteus vulgaris 7,480
Serratia marcescens 6,160
Bacillus subtilis 11,000
Bacillus subtilis spores 22,000
Spirillum rubrum 6,160
References:
(a) Luckiesh, Matthew (1946) Application of Germicidal, Ethyemal and Infrared Energy,
D. Van Nostrand o., New York, New York, pp 253
(b) Hollaender (1942) Aerobiology, A.A.A.S. (for 90% inactivation), pp 162
(c) Ellis, C. and Wells, O.O. (1941) The Chemical Action of Ultraviolet Rays, Reinhold Publishing Corp., pp. 713-714
(d) Hollaender, A., Oliphant, J.W. (1944)
The inactivation effect of monochromatic ultraviolet. Radiation on Influenze Virus (for 90% inactivation) Jour. of Bact. 48, pp. 447-454
(e) This table, "Energies Required to Destroy Some Microorganisms by Ultraviolet Radiation's" comes from Westinghouse brochure
entitled - "Westinghouse Sterilamp Germicidal Ultraviolet Tubes"