How do you measure off gas from yeast?

Off-gas from yeast is a measure of the amount of carbon dioxide produced by yeast during fermentation. This can be measured using a variety of methods, including:

Gas chromatography (GC): This is the most accurate method for measuring off-gas from yeast. A GC separates the different components of a gas sample and then measures their concentration. This allows for the precise measurement of carbon dioxide levels in yeast off-gas.

Fermentation gas analyzer: This is a specialized instrument that measures the amount of carbon dioxide produced by yeast during fermentation. These analyzers are typically used in breweries and other commercial fermentation operations.

Bubble counter: This is a simple method for measuring off-gas from yeast. A bubble counter is a graduated cylinder that is filled with water. A tube from the fermentation vessel is inserted into the water, and the bubbles that rise to the surface are counted. The rate at which bubbles rise to the surface can be used to calculate the amount of carbon dioxide produced by yeast.

pH meter: This is an indirect method for measuring off-gas from yeast. As yeast produce carbon dioxide, the pH of the fermentation medium decreases. By measuring the pH of the fermentation medium, it is possible to estimate the amount of carbon dioxide produced by yeast.

The choice of method for measuring off-gas from yeast will depend on the accuracy and precision required, as well as the availability of resources.