4000-0041 Guava ViaCount Reagent for Flow Cytometry, 600 tests

600 Tests  
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      Replacement Information
      Catalogue Number4000-0041
      Trade Name
      • Guava
      DescriptionGuava ViaCount Reagent for Flow Cytometry, 600 tests
      OverviewRapid and reliable
      The ViaCount Assay provides rapid and reliable determinations of viability and total cell count on all Guava® Systems. Precise, accurate assessments can be made with a wide variety of cell lines, even those with unusual culture conditions or a tendency to aggregate.

      A simple no-wash, mix-and-read procedure, the ViaCount Assay accurately determines absolute total cell counts, viability assessments, and apoptotic percentages with as little as 20 μL of sample.

      Accurate and precise
      The assay has proven to be more accurate than hemocytometer counting or impedence-based counting over a wide range of cell concentrations without the use of expensive reference beads. And, by providing data on all three types of cell populations in a single measurement, the Guava ViaCount Assay enables a more precise evaluation of culture conditions and viable cell populations so you can best optimize culture conditions. Precise, accurate cell counts provide more consistency for experiments that depend upon accurate determination of viable cells for success, such as ELISpot, cell-based fluorescence assays, or cytokine production assays.
      Distinguishes viable, dead, and apoptotic cells

      The ViaCount Assay distinguishes viable and non-viable cells based on differential permeabilities of two DNA-binding dyes in the Guava ViaCount® Reagent. The nuclear dye stains only nucleated cells, while the viability dye brightly stains dying cells. This proprietary combination of dyes enables the Guava ViaCount Assay to distinguish viable, apoptotic, and dead cells. Debris is excluded from results based on negative staining with the nuclear dye. For use with all instruments
      Click here for more information regarding Instrument Compatibility
      Product Information
      Instrument compatibility
      • EasyCyte
      • EasyCyte Plus
      • EasyCyte Mini
      • PCA
      • PCA-96
      ApplicationThe ViaCount Assay provides rapid & reliable determinations of viability & total cell count on all Guava Flow Cytometers.
      Biological Information
      Physicochemical Information
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Usage Statement
      • Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
      Storage and Shipping Information
      Packaging Information
      Material Size600 Tests
      Transport Information
      Supplemental Information




      Safety Data Sheet (SDS) 

      Certificates of Analysis

      TitleLot Number
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-001312-0013
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-008612-0086
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-011012-0110
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-012412-0124
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-023412-0234
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-033012-0330
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-034412-0344
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-044912-0449
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-049812-0498
      Guava ViaCount® Reagent - 240 mL (600 Tests) - 12-054412-0544


      Flow cytometry solutions for your cell health experiments.
      Guava Cell Health Profiling
      Innovative Solutions for Flow Cytometry Analysis (EMD)

      Technical Info

      Application Note: Benchtop flow cytometry facilitates discrimination between induction of DNA damage, oxidative stress and protein misfolding using a novel multicell GFP reporter assay
      Assessing apoptosis in cell cultures quickly and easily using the Guava ViaCount Assay
      At-line monitoring of cell cultures: Rapid cytometric evaluation of cellular physiology
      Comparing Quantitative Viability Bioassays: An Evaluation of MTT, alamarBlue, and Guava ViaCount Methods
      Demonstrating the superiority of the Guava ViaCount Cell Counting/Viability Assay over the Trypan blue method
      Enhanced precision of Elispot assays with the Guava ViaCount method of cell counting
      Monitoring apoptosis using four different assays on the Guava PCA System
      Reducing Variation in Elispot assays
      Screening compounds for apoptotic and cytotoxic activity with the Guava PCA-96 Microplate-based Benchtop Cell Analysis System

      User Guides

      Guava ViaCount

      Related Products & Applications


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      4000-0061 Guava Express 7-AAD Reagent for Flow Cytometry Show Pricing & Availability

      Software Compatibility

      Catalog Number Description  
      0500-0580 Guava ViaCount Software Show Pricing & Availability
      0500-1030 Guava ViaCount Software Show Pricing & Availability
      0500-1470 Guava ViaCount Software Show Pricing & Availability

      Product Families


      Life Science Research > Cell Analysis > guava easyCyte Flow Cytometers > Flow Cytometry Kits & Reagents