Microscopic analysis of wine and juice samples is the fastest method for identifying the presence of yeast and bacteria. A very small volume of sample is placed on a glass slide for examination. The slide is placed under the lens of the microscope and examined at 400X magnification. Phase contrast microscopy is used to enhance detection of yeast and bacteria. Detection of bacteria or yeast with a microscope requires a relatively large population in order to be observed. Generally, populations in excess of 10,000 cells per mL are required for detection with microscopy. Positive identification of specific yeast and bacteria species can be difficult via microscopy due to the variability in cell shape and size amongst a unique species.
This test characterizes, and attempts to identify, unknown sediments. The sample is filtered and then sediment is analyzed using both high and low power microscopy and a variety of qualitative tests based on the size and type of sediment.
We achieve economies of scale here at ETS based on the volume of samples
processed at a given time. As a consequence we are pleased to pass these
savings on to our customers, offering discounts for multiple sample
submissions. These discounts apply only to samples submitted at the same