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Monthly Archives: December 2010

27 Dec

Trial and error is not the only way to develop an HPLC Method. There is simulation software available for method development. This software will save time by simulating changes in the chromatogram due to changes in mobile phase polarity, column … Continue reading

24 Dec

Microbial spoilage of canned food occurs when heat processing fails to meet standard requirements. This can occur because of home canning of foods or carelessness in handling the raw materials before canning which results in a high level of contamination … Continue reading

23 Dec

Microbiology is the study of small, living, primarily unicellular organisms. Collectively they can be referred to as microbes and may be bacteria, fungi or other single cell life forms. A common feature to all is that they are quite small … Continue reading

22 Dec

The human body’s Nervous system is composed of three major organs: brain, spinal cord and nerves. These three organs are divided into two systems. The Central Nervous System is composed of the brain and spinal cord. The CNS function is … Continue reading

17 Dec

The presence of bacteria in food does not mean that the food is spoiled however it is important, in some cases, to measure the bacterial counts of foods. Some food like yogurt, summer sausage, and sauerkraut are produced by microbial … Continue reading

16 Dec

Microscopes are all around us and being used in almost every area of science and technology. Almost as common, is the use of microscope cameras to document an observation. Virtually all digital cameras (both still and video) incorporate the ability … Continue reading

15 Dec

The human body’s Nervous system is composed of three major organs: brain, spinal cord and nerves. These three organs are divided into two systems. The Central Nervous System (CNS) is composed of the brain and spinal cord. The general function … Continue reading

13 Dec

A microscope slide and a coverslip (cover glass) are all that is needed for an examination of pond water using a slide microscope. For the beginning and intermediate observer any microscope slide and coverslip will work. There are specialized slides … Continue reading

10 Dec

The reductase test is used to test the presence of bacteria in raw milk. Milk that contains large numbers of active growing bacteria will have a lowered oxidation-reduction poetential due to the exhaustion of dissolved oxygen by microorganisms. The fact … Continue reading

09 Dec

The world of microscopes and the science of microscopy date from the 1600′s. Microscopy has fascinated man from the first realization that small objects could be magnified and examined in minute detail. The “homonculus” was thought to be a complete … Continue reading