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ANALYSIS OF PROCESS AND COOLING TOWER WATER
AND DEPOSIT SAMPLES

METHOD: DNA hybridization using a library of 31 Genus-specific and Genus/spercie specific probes. Microbial DNA is directly isolated from the sample which gives a truer representation of the microbial population of the sample without the bias of slower growing microorganisms not being represented. In addition, injured cells, which may not be able to grow on subculture to microbiological media, will also be detected.

Detection Limits: While we have been able to detect most microorganisms at less than 100 cfu/ml or gram levels; overall the detection limit would be better placed at the 500 cfu level. This is near the limits of potential problems in most systems.

BACTERIAL DNA ANALYSIS…………………….$ 270.00 per sample

This analysis reports the percentage of bacterial DNA found in the sample for each bacterial genus detected from the test library. In addition, a calculated cfu value is also reported which is based on the average amount of 1.6 fentagrams/bacterial cell. Such calculated cfu’s will be higher than cultured cfu’s due to the inclusion of recently killed or dead cells as well as cells that may not grow due to injury or failure of the media to provide favorable conditions for growth.

BACTERIAL ANALYSIS FOR SPECIFIC GROUPS

1) Slime Formers-Spore Formers……………………$ 75.00 per sample
             Genus tested for—Bacillus sp. & Clostridium sp.(Non-H₂S Producers)
2) Slime Formers Non-Spore Formers……………...$ 180.00 per sample
              Genus tested for– Enterococci; Enterobacter; Proteus; Acinetobacter;
               Serratia; Alcaligenes; Pseudomonas and E.coli
3) Iron Bacteria………………………………………….$ 60.00 per sample
              Genus tested for—Leptothrix, Sphaerotilus & Gallionellia
4) Sulfate Reducers……………………………………..$ 75.00 per sample
              Genus tested for—Desulfovibrio & Clostridium sp. (H₂S Producers)
5) Sulfuric Acid Producers…………………………….$ 75.00 per sample
              Genus tested for—Thiobacillus sp.
6) Nitric Acid Producers………………………………..$ 75.00 per sample
             Genus tested for—Nitrosomonas, Nitrosospira & Nitrovibio

PCR Analysis for Legionella sp.
1 Sample……………………………….$ 100.00 per sample
5 or more samples at one time………$ 90.00 per sample

Microbiological Growth Tests
Standard Aerobic Plate Count………………..$ 35.00 per sample
Yeast & Mold Count……………………………$ 35.00 per sample

Yeast Identification……………………………………..$ 50.00 per sample

Microbiological Laboratories, Inc.

Microbiological Laboratories, Inc.

Industrial and Veterinary Microbiology Utilizing Conventional and Molecular Techniques

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