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UV Dosages to Deactivate Microorganisms
The following tables list the UV dosage required to kill
common bacteria, molds, protozoa, viruses, and yeasts.
|
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 |
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.
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