ETS’ automated method reports yeast viability and total cell count within hours, using 100 times the volume examined in standard microscopic methods, vastly increasing the accuracy of your results.

How It Works

Our automated analysis uses the widely accepted dye exclusion method to determine cellular viability. Live yeast cells have selective cell membranes that exclude dye compounds. When yeast cells die, their cell membranes become permeable, allowing the dye to seep in.  The dead, or non-viable, cells become stained and appear darker than the viable cells.

Improved Speed & Consistency

Traditional methods using a microscope suffer from human error in preparation and the subjectivity of visual measurements using the human eye. ETS uses an automated method that couples standard staining methods with advanced optics and flow cytometry to report yeast viability more accurately and precisely. This real-time microscopic flow image analysis also examines 100 times the volume of standard microscopic methods, vastly increasing the accuracy of the results. The automated method gives winemakers rapid information on the status of yeast viability for each sample. In addition, the instrument provides greater consistency between samples by automating preparation.

Reports present the percentage of viable yeast and the total population size per milliliter of sample.

Advance Warning of 'Stuck' and 'Sluggish' Fermentations

Accurate viability staining, in coordination with standard wine chemical analyses, allows winemakers to generate historical profiles of fermentation performance and gives warning of potential problems.

Automated yeast viability testing gives winemakers up-to-the-minute information on the activity of a particular fermentation. Wines at risk of becoming “sluggish” or “stuck” can be monitored at any time, giving winemakers more information to help identify problematic fermentations.

Applications

• Measure viability in a yeast starter culture prior to inoculation 
• Measure the effectiveness of yeast nutrient additions 
• Track performance of individual fermentations over time
• Monitor yeast viability throughout the fermentation process

Stay ahead of sluggish or stuck fermentations.
With ETS Labs’ automated yeast viability testing, you’ll get fast, highly accurate insights to monitor and optimize fermentation performance. Eliminate guesswork, track trends, and make timely decisions that protect wine quality.

Talk to ETS Labs 

ETS Laboratories