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  • Petrifilm® Staph Express Count Plates

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    • Petrifilm® Staph Express Count Plates

    Petrifilm® Staph Express Count Plates

    The Petrifilm® Staph Express Count Plate is a ready-to-use, sample-ready culture plate designed for rapid detection and enumeration of Staphylococcus aureus in food and environmental samples.
    Model : 6491
    • 6490-sds_tw.pdf

    • Description
    • Specifications
    • Features
    • Applications

    Neogen® Petrifilm® Staph Express Count Plates (STX) are designed for the enumeration of Staphylococcus aureus in food and food-contact samples.
    Simply inoculate 1 mL of diluted sample and spread evenly before incubation.

    The selective media and indicator system allow S. aureus to form distinct blue-to-black colonies.
    The transparent background and printed grid support fast and consistent colony counting.

    STX Plates are suitable for dairy, meat, processed foods, prepared foods and hygiene monitoring of food-contact surfaces.

    BrandPetrifilm®
    Product Name Neogen® Petrifilm® Staph Express Count Plates (STX)
    Target Organism Staphylococcus aureus
    Sample Types Dairy, meat, processed foods, prepared foods, food-contact surfaces
    Incubation Conditions 24 ± 2 hours at 35–37°C
    Reading Typical colonies appear blue to black; printed grid aids enumeration
    Recommended Count Range ≤ 150 CFU/plate
    Catalog Numbers 6498: 50 plates/box
    6499: 100 plates/box
    Storage Conditions 2–8°C refrigerated storage
    Use After Opening Use as soon as possible after opening to ensure performance stability
    Brand Neogen® Petrifilm®
    Method Validation AOAC International / AFNOR

Advantages

  • Provides S. aureus results in ~24 hours.
  • Blue-to-black colonies support clear and reliable interpretation.
  • Selective media suppress background flora for improved accuracy.
  • Thin-film design saves incubator space and increases lab throughput.
  • Ideal for routine QC and audit testing in food manufacturing.

Limitations

  • Not intended for clinical or diagnostic use.
  • Non-target organisms may produce atypical colonies and require confirmation.
  • High-count samples may require additional dilution.

Operating Notes

  • Inoculate 1 mL vertically to avoid air bubbles.
  • Incubate clear side up and follow recommended stack height.
  • Verify typical blue–black colony morphology when counting.

Technical Details

  • Growth area approximately 20 cm² with printed grid.
  • Selective components inhibit non-target organisms.
  • Method aligned with AOAC validated principles.
  • Staphylococcus aureus testing in dairy and dairy products.
  • Microbiological monitoring in meat, processed and prepared foods.
  • Hygiene monitoring of equipment, tools and food-contact surfaces.
  • Used by third-party laboratories and in food safety training.

Related Products

Neogen® Swab-Sampler with Buffered Peptone Water

Neogen® Swab-Sampler with Buffered Peptone Water

Petrifilm® Yeast and Mold Count Plates

Petrifilm® Yeast and Mold Count Plates

Neogen® Buffered Peptone Water Broth ISO

Neogen® Buffered Peptone Water Broth ISO

Neogen® Petrifilm® Bacillus cereus Count Plates

Neogen® Petrifilm® Bacillus cereus Count Plates

Petrifilm® Rapid E. coli/Coliform Count Plates

Petrifilm® Rapid E. coli/Coliform Count Plates

Petrifilm® Environmental Listeria Plates<table border="1" cellpadding="6" cellspacing="0" style="border-collapse:collapse;">   <tr><td>Brand</td><td>Petrifilm®</td></tr>   &

Petrifilm® Environmental Listeria Plates<table border="1" cellpadding="6" cellspacing="0" style="border-collapse:collapse;"> <tr><td>Brand</td><td>Petrifilm®</td></tr> &

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