 | 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 - 472 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 - 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... | |
 | 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... | |
 | 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 - 300 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... | |
 | 1949 - 650 pages
...tests should be made on multiple portions of a geometric series ranging from 10 ml. to 0.1 ml. or less. shall be collected promptly and examined until the...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... | |
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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... 
