How Oculyze yeast cell counter works? Watch video demo!

Five minutes in the lab
can be more important
than five hours in the field

Worldwide shipping available from our online store

Five minutes in the lab can be more important than five hours in the field

Worldwide shipping available from our online store


Key Features

  • Oculyze FW helps improve quality and consistency in your wine-making process

  • Concentration and viability analysis in less than one minute

  • Quick and easy to use and delivers accurate and immediate on-site results

  • Assists winemakers understand the progression of their fermentation so they can identify and rectify problematic fermentations at the earliest possible stage

  • Automated warnings will automatically interpret the data and warn you of potentially stuck fermentations – Coming soon!


Oculyze Fermentation Wine (FW)

Oculyze offers a smart, technology driven solution to the age-old problem of manual yeast counting and is now automating yeast analysis for hundreds of customers in over 38 countries.

Oculyze FW combines a 400x optical magnification with cloud-based image analysis software to enable you to accurately, easily and instantly analyze yeast concentrations onsite before and during the fermentation process. No special expertise or training is required.

Yeast cell counter is a very small investment to ensure your vintage achieves the potential of your grapes. You can’t control the sun or the rain, but you can control your fermentation.


We analyze the same volume as in a counting chamber (hemocytometer) but are 10 times faster and have no human error. Additionally, yeast viability is determined by differentiating between live and dead cells with methylene violet staining.

An integrated separation of clumped cells allows an accurate analysis; budding cells are automatically identified and provided as a separate value.

Our data management system allows you to access all of your yeast concentration and viability results. Review your analysis history from anywhere, anytime.

View and analyze your measurements from any connected device. The web app allows you to generate customized reports, view historical data, track your yeast over time and increase statistical accuracy by creating averages of different measurements.

Automated yeast analysis for wine fermentation
without the high price tag

Suitable for Large Wineries

Unlimited Pro

  • Prepay unlimited analysis for 12 months
  • Get the microscope for free!

Suitable for Moderate Wineries Most Popular!

500 Analyses

  • Prepay for 500 analyses
  • Get the microscope for half price!

Suitable for Small Wineries


  • 12 monthly payments, unlimited analysis
  • Get the microscope for free!
Please send me more information

What is included in every fermentation wine (FW) package?

  • measuring cylinder
  • methylene violet
  • pasteur pipettes
  • reaction containers
  • cleaning cotton swabs
  • sample chambers
  • plastic syringes
  • bellows

Online Store
  • Oculyze FW
  • Sturdy compact case

Thoroughly tested

“The results of the cell counting with the Oculyze system are very closely comparable with those obtained using a Thoma chamber… The Oculyze system does not require a laboratory microscope or trained staff… The Oculyze system is faster due to the automated measurement and analysis.”External validation by the Research and Teaching Institute for Brewing in Berlin (VLB)
Complete report as PDF

Gold Medal winner at Intervitis Interfructa Horitechnica (IIH) 2018

Oculyze was awarded the prestigious Gold medal for its enhanced technology at the 2018 IIH held in
Stuttgart, Germany.Winner: Innovation Prize 2018

Additional features

Methylene violet in wine fermentation

You can choose between Methylene Violet and Blue for your viability measurements. We send methylene violet with every purchase. Methylene Violet can offer advantages; it performs better in growing phases of yeast cells (i.e. exponential and stationary) as well as for cultures with low viability and totally dead cultures.

Sharpness indicator in wine fermentation

This feature improves image quality and helps guide you to find the sharpest possible image. As you begin your measurements and turn the microscope knob, you will see the sharpness indicator changing values, once you have found the highest value possible – you’ve found your sharpest image and you’re ready to capture!

Manual Counting

Oculyze FW includes the option to manually count your yeast. This function adds a counting grid to your yeast images to mimic a hemocytometer/Thoma Chamber. This also affords you the opportunity to see what other microbes are in your must!

Discerning Cells

The Oculyze analysis will report on the varying sizes of your yeast. In addition, the algorithm will also identifying the percentage of cells that are budding which can be an indication of good yeast health as well as the stage of fermentation. Finally, Oculyze analyses can identify clustered cells, a task most automated cell counters struggle with.

Looking for more information?
Click one of the links below.

Viability and Vitality in
Winemaking (in English)
Click here
Check out article in Das
Deutsche Weinmagazin (in
Click here
Check out article in Der
Deutsche Weinbau (in
Click here