Dual fluorescence automated yeast counter

The Logos Biosystems Luna II YF uses dual fluorescence optics and nuclear staining to provide accurate count and viability data for a wide range of yeast strains used in research and fermentation

Affordable Running Costs
Low cost disposable slides or use the optional Luna reusable slide to further reduce ongoing costs as well as save on plastic waste

Accurate and Reliable Data
Large counting volume and 5 MP camera provide count and viability data you can rely upon

Nuclear Staining
Dual fluorescence optics with choice of AO / PI or FDA / PI staining for accurate viability information

Advanced Declustering
Sophisticated declustering algorithms provide accurate counts for clumpy yeast cultures

Easy To Use
Intuitive colour touchscreen interface with no need for special training

Flexible Data Handling
Export count, image or report data for offline viewing or sharing


Instrument Control – Built-in colour touchscreen

Cell Size Range – 1-90 µM, (5-60 µM Optimal)

Cell Concentration Range – 5 x 10^4 – 1 x 10^7 cells per ml

Counting Time – < 10 seconds (manual focus) or < 15 seconds (autofocus)

Dimensions (W × D × H) – 16 × 18 × 28 cm (6.3 × 7 × 11 in.)

Weight – 1.8 kg (3.9 lbs.) without power cord and AC adaptor

Connectivity – Three USB-A ports

Data Export Formats – CSV, TIFF and PDF

  • Optional reusable slide
  • Save money and the environment
  • Dual Fluorescence
  • Accurate yeast count and viability data
  • Autofocus
  • Remove user to user variation
  • Compact standalone design
  • Save valuable benchspace

Hardware Features

  • Liquid lens autofocus with no mechanically moving parts or servicing required
  • High resolution 5MP camera and optimised LED illumination
  • 3 x USB ports for data export
  • Dual fluorescence optics
  • < 15 second count time when using autofocus

Software Features

  • Optimise and save protocols for different cell types
  • Digital zoom for a clearer view of your cells
  • Tag function highlights live and dead cells allowing you to assess count accuracy and optimise settings
  • Review and reanalyse data on-board
  • Dilution calculator

Data Handling

  • On-board storage of the last 1,000 counts with export via USB drive in CSV format for Excel
  • Save images and reports to USB drive if required
  • Raw and Tagged TIFF images
  • Comprehensive PDF reports with count and viability data, histograms, cluster maps and images
  • Printed data for your lab-notebook via USB connected Luna thermal printer


  • Count and viability data for yeast cells
  • Brewing, winemaking or research use




User Mnaual