Use of Molecular Filter Membranes for Water Potability Control

Thomas, Harold A.; Woodward, Richard L.; Kabler, Paul W.

doi:10.1002/j.1551-8833.1956.tb16674.x

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1957

1977

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Cited by 11 publications

(3 citation statements)

References 8 publications

(14 reference statements)

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“…The parameters of the lognormal distribution are the mean log estimated by log x log xi (6) and the variance of the logs estimated as var log x = n-1 2 (log x,. -log x)2 (7) Coliform counts of zero present a problem with the use of the lognormal distribution. One solution is to use the lognormal distribution with added zeros (sometimes called the delta distribution).…”

Section: Distributions Consideredmentioning

confidence: 99%

Frequency Distributions for Coliform Bacteria in Water

Pipes¹,

Ward²,

Ahn³

1977

Journal AWWA

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Section: Distributions Consideredmentioning

confidence: 99%

Frequency Distributions for Coliform Bacteria in Water

Pipes¹,

Ward²,

Ahn³

1977

Journal AWWA

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“…lated over the past 10 years in favor of the molecular filter membrane technique (1)(2)(3)(4) . Eliassen (3) emphasizes precision as the major advantage of the MF method.…”

mentioning

confidence: 99%

“…The relative coliform recovery or the ratio of the median MF to the median MPN was 0.92. With adjustment (MPN X 0.81) for bias(2), the relative coli-MF form recovery MPN was 1.13. Overall average.…”

mentioning

confidence: 99%