Biomedical Science Letters

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Table. 2.

Number of microorganisms isolated from the hot and cold water of six water purifiers in January and September 2019 year

Water purifiers Gram reaction Number of microorganisms/mL
JAN 2019 SEP 2019
H C H C
A GP 0 20 0 0
GN 0 256 0 89
B GP 0 320 1 0
GN 0 0 0 164
C GP 0 272 0 0
GN 0 169 0 387
D GP 0 88 0 0
GN 0 0 0 218
E GP 0 0 0 0
GN 0 0 0 183
F GP 0 191 0 0
GN 0 0 0 0
Total 0 1,316 0 1,041
Mean 0 219.33 0.17 173.50

Abbreviations: JAN, January; SEP, September; GP, gram positive; GN, gram negative; H, hot water; C, cold water

Range and mean of temperature of cold and hot water was 5.37℃ (4~9℃) and 76℃ (70~81℃)

Biomed Sci Letters 2023;29:256-62 https://doi.org/10.15616/BSL.2023.29.4.256
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