When measured in drinking water, an alkaline pH can be a result of either natural or unnatural conditions in the water. Thus when comparing two waters, each with a pH of 9.5, one can be healthful while the other causes side effects.
Bottle type Colour Blood volume Indication for use Aerobic (Standard/10 Aerobic/F) Blue 8 - 10 mL All routine blood cultures Anaerobic (Standard Anaerobic/F) Yellow 5 - 7 mL Add one anaerobic bottle to each aerobic bottle in suspected endocarditis and PUO.he medical microbiologists will contact the relevant clinican in the event of any blood culture growing a significant organism; there is no need to telephone the laboratory to chase results. References Taking blood cultures: A summary of best practice.
If the test was followed as described above, the culture will have changed to yellow in the presence of acids (indicating a positive test) or magenta or hot pink in the presence of bases/alkali (indicating a negative test). 17. Record test result. 18.