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What microorganisms are deactivated by germicidal ultraviolet light? 

Bacteria

UV Dose

Bacteria

UV Dose

Agrobacterium lumefaciens 5

8,500

Pseudomonas aeruginosa (Environ.Strain) 1,2,3,4,5,9

10,500

Bacillus anthracis 1,4,5,7,9 (anthrax veg.)

8,700

Pseudomonas aeruginosa (Lab. Strain) 5,7

3,900

Bacillus anthracis Spores(anthrax spores)*

46,200

Pseudomonas fluorescens 4,9

6,600

Bacillus megatherium Sp. (veg) 4,5,9

2,500

Rhodospirillum rubrum 5

6,200

Bacillus megatherium Sp. (spores) 4,9

5,200

Salmonella enteritidis 3,4,5,9

7,600

Bacillus paratyphosus 4,9

6,100

Salmonella paratyphi (Enteric Fever) 5,7

6,100

Bacillus subtilis 3,4,5,6,9

11,000

Salmonella Species 4,7,9

15,200

Bacillus subtilis Spores 2,3,4,6,9

22,000

Salmonella typhimurium 4,5,9

15,200

Clostridium tetani

23,100

Salmonella typhi (Typhoid Fever) 7

7,000

Clostridium botulinum

11,200

Salmonella

10,500

Corynebacterium diphtheriae 1,4,5,7,8,9

6,500

Sarcina lutea 1,4,5,6,9

26,400

Dysentery bacilli 3,4,7,9

4,200

Serratia marcescens 1,4,6,9

6,160

Eberthella typhosa 1,4,9

4,100

Shigella dysenteriae - Dysentery 1,5,7,9

4,200

Escherichia coli 1,2,3,4,9

6,600

Shigella flexneri - Dysentery 5,7

3,400

Legionella bozemanii 5

3,500

Shigella paradysenteriae 4,9

3,400

Legionella dumoffill 5

5,500

Shigella sonnei 5

7,000

Legionella gormanil 5

4,900

Spirillum rubrum 1,4,6,9

6,160

Legionella micdadei 5

3,100

Staphylococcus albus 1,6,9

5,720

Legionella longbeachae 5

2,900

Staphylococcus aureus 3,4,6,9

6,600

Legionella pneumophila (Legionnaire's Disease) 12,300 Staphylococcus epidermidis 5,7 5,800

Leptospira canicola-Infectious Jaundice 1,9

6,000

Streptococcus faecaila 5,7,8

10,000

Leptospira interrogans 1,5,9

6,000

Streptococcus hemolyticus 1,3,4,5,6,9

5,500

Micrococcus candidus 4,9

12,300

Streptococcus lactis 1,3,4,5,6

8,800

Micrococcus sphaeroides 1,4,6,9

15,400

Streptococcus pyrogenes

4,200

Mycobacterium tuberculosis 1,3,4,5,7,8,9

10,000

Streptococcus salivarius

4,200

Neisseria catarrhalis 1,4,5,9

8,500

Streptococcus viridans 3,4,5,9

3,800

Phytomonas tumefaciens 1,4,9

8,500

Vibrio comma (Cholera) 3,7

6,500

Proteus vulgaris 1,4,5,9

6,600

Vibrio cholerae 1,5,8,9

6,500

Molds

UV Dose

Molds

UV Dose

Aspergillus amstelodami

77,000

Oospora lactis 1,3,4,6,9

11,000

Aspergillus flavus 1,4,5,6,9

99,000

Penicillium chrysogenum

56,000

Aspergillus glaucus 4,5,6,9

88,000

Penicillium digitatum 4,5,6,9

88,000

Aspergillus niger (breed mold) 2,3,4,5,6,9

330,000

Penicillium expansum 1,4,5,6,9

22,000

Mucor mucedo

77,000

Penicillium roqueforti 1,2,3,4,5,6

26,400

Mucor racemosus (A & B) 1,3,4,6,9

35,200

Rhizopus nigricans (cheese mold) 3,4,5,6,9

220,000

Protozoa

UV Dose

Protozoa

UV Dose

Chlorella vulgaris (algae) 1,2,3,4,5,9

22,000

Giardia lamblia (cysts) 3

100,000

Blue-green Algae

420,000

Nematode Eggs 6

40,000

E. hystolytica

84,000

Paramecium 1,2,3,4,5,6,9

200,000

Virus

UV Dose

Virus

UV Dose

Adeno Virus Type III 3

4,500

Influenza 1,2,3,4,5,7,9

6,600

Bacteriophage 1,3,4,5,6,9

6,600

Rotavirus 5

24,000

Coxsackie

6,300

Tobacco Mosaic 2,4,5,6,9

440,000

Infectious Hepatitis 1,5,7,9 8,000 0  

Yeasts

UV Dose

Yeasts

UV Dose

Baker's Yeast 1,3,4,5,6,7,9

8,800

Saccharomyces cerevisiae 4,6,9

13,200

Brewer's Yeast 1,2,3,4,5,6,9

6,600

Saccharomyces ellipsoideus 4,5,6,9

13,200

Common Yeast Cake 1,4,5,6,9

13,200

Saccharomyces sp. 2,3,4,5,6,9

17,600

1. "The Use of Ultraviolet Light for Microbial Control", Ultrapure Water, April 1989.
2. William V. Collentro, "Treatment of Water with Ultraviolet Light - Part I", Ultrapure Water, July/August 1986.
3. James E. Cruver, Ph.D., "Spotlight on Ultraviolet Disinfection", Water Technology, June 1984.
4. Dr. Robert W. Legan, "Alternative Disinfection Methods-A Comparison of UV and Ozone", Industrial Water Engineering, Mar/Apr 1982. 
5. Unknown 
6. Rudolph Nagy, Research Report BL-R-6-1059-3023-1, Westinghouse Electric Corporation.
7. Myron Lupal, "UV Offers Reliable Disinfection", Water Conditioning & Purification, November 1993.
8. John Treij, “Ultraviolet Technology”, Water Conditioning & Purification, December 1995.9. Bak Srikanth, “The Basic Benefits of Ultraviolet Technology”, Water Conditioning & Purification, December 1995
* Approximate - Various sources may report different inactivation dosages.

Copyright 1995-2008 All rights reserved. The information and recommendations contained in this publication are based upon data collected and are believed to be correct. However, no guarantee or warranty of any kind, expressed or implied, is made with respect to the information contained herein. Specifications and information are subject to change without notice.
 
 
 

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