Common use of TESTS FOR MICRO-ORGANISMS Clause in Contracts

TESTS FOR MICRO-ORGANISMS. Routinely the water of recirculating pools is searched for specific disease producing micro- organisms; such tests are difficult to perform and are carried out only in special circumstances. The searches normally carried out are for the Total Colony and Coliform counts. In re-circulation pools with continuous purification the total colony of plate count gives an accurate measure of the general bacterial contamination of the pool water from all sources. Usually, the total colony rises proportionally in relation to the bathing load; very low counts are characteristic of pool employing free residual chlorination. The total colony count should not exceed 200 colonies per ml. but occasionally pool waters develop organisms resistant to chlorine which give rise to total colony counts of several thousand per ml. These organisms are easily identified in the water laboratory and do not appear to be of any sanitary significance.

TESTS FOR MICRO-ORGANISMS. Routinely the water of recirculating pools is searched for specific disease producing micro- micro-organisms; such tests are difficult to perform and are carried out only in special circumstances. The searches normally carried out are for the Total Colony and Coliform counts. In re-circulation pools with continuous purification the total colony of plate count gives an accurate measure of the general bacterial contamination of the pool water from all sources. Usually, the total colony rises proportionally in relation to the bathing load; very low counts are characteristic of pool employing free residual chlorination. The total colony count should not exceed 200 colonies per ml. but occasionally pool waters develop organisms resistant to chlorine which give rise to total colony counts of several thousand per ml. These organisms are easily identified in the water laboratory and do not appear to be of any sanitary significance.