 | 1947 - 1200 pages
...portions constituting a singte standard sample show the presence of organisms of the coliform group, daily samples from the same sampling point shall be...samples show the water to be of satisfactory quality.' (5) The procedure given, using a standard sample composed of five standard portions, provides for an... | |
 | 1972 - 488 pages
...five or more are examined per month. When organisms of the coliform group occur in all five of the 100 ml portions of a single standard sample, daily samples...samples show the water to be of satisfactory quality. (3) When the membrane filter technique is used, the arithmetic mean coliform density of all standard... | |
 | 1972 - 468 pages
...per month. When organisms of the coliform group occur in all five of the 100 ml portions of a singlj standard sample, daily samples from the same sampling...samples show the water to be of satisfactory quality. (3) When the membrane filter technique is used, the arithmetic mean coliform density of all standard... | |
 | 1976 - 1200 pages
...per month. When organisms of the coliform group occur in all five of the 100 ml portions of a singl3 standard sample, daily samples from the same sampling...samples show the water to be of satisfactory quality. (3) When the membrane filter technique is used, the arithmetic mean coliform density of all standard... | |
 | 1970 - 438 pages
...are examined per month. When coliform colonies In a single standard sample exceed the above values, daily samples from the same sampling point shall be...samples show the water to be of satisfactory quality. § 72.204 Physical characteristics. (a) Sampling. The frequency and manner of sampling shall be determined... | |
 | 1973 - 446 pages
...examined per month. When coliform colonies In a single standard sample exceed the above values, dally samples from the same sampling point shall be collected...samples show the water to be of satisfactory quality. § 72.204 Physical characteristic*. (a) Sampling. The frequency and manner of sampling shall be determined... | |
 | 1960 - 302 pages
...portions constituting a single standard sample show the presence of organisms of the coliform group, daily samples from the same sampling point shall be...consecutive samples show the water to be of satisfactory quality.7 (3) Of all the standard one hundred milliliter (100 ml.) portions examined per month in accordance... | |
 | United States. Public Health Service - 1963 - 80 pages
...the samples when 20 or more are examined per month. When organisms of the coliform group occur in 3 or more of the 10 ml portions of a single standard...samples show the water to be of satisfactory quality. 3.22 When 100 ml standard portions are examined, not more than 60 percent in any month shall show the... | |
 | United States. Public Health Service - 1962 - 80 pages
...five or more are examined per month. When organisms of the coliform group occur in all five of the 100 ml portions of a single standard sample, daily samples...samples show the water to be of satisfactory quality. X3.23 When the membrane filter technique is used, the arithmetic mean coliform density of all standard... | |
 | United States. Public Health Service - 1962 - 92 pages
...are examined per month. When coliform colonies in a single standard sample exceed the above values, daily samples from the same sampling point shall be...samples show the water to be of satisfactory quality. 4. PHYSICAL CHARACTERISTICS 4.1 Sampling. — The frequency and manner of sampling shall be determined... | |
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When organisms of the coliform group occur in all five of the 100 ml portions of a single standard sample, daily samples from the same sampling point shall be collected promptly and examined until the results obtained from at least two consecutive samples... 
