Thermo Scientific™ Oxoid™ Half Fraser Supplement

The Thermo Scientific™ Oxoid™ Half Fraser Supplement is a high-quality freeze-dried selective enrichment supplement designed for the primary enrichment of Listeria species in food and environmental samples. Used in combination with Fraser Broth Base (CM0895) at half-strength selectivity, it supports the recovery of stressed or low-level Listeria monocytogenes prior to full selective enrichment.

This supplement is a critical component of standardized Listeria detection workflows (ISO methods), enabling improved sensitivity during the early enrichment stage.

Key Features

• Selective enrichment supplement for Listeria species
• Designed for primary enrichment (Half Fraser stage)
• Used with Fraser Broth Base (CM0895)
• Freeze-dried format for stability and ease of use
• Supports recovery of injured or stressed Listeria cells
• Essential for two-step Listeria enrichment protocols

Applications

• Primary enrichment of Listeria in food samples (dairy, meat, ready-to-eat foods)
• Detection of low-level contamination in food processing environments
• Microbiological testing in quality control laboratories
• Compliance with ISO Listeria detection standards (e.g., ISO 11290)

Technical Specifications

Ordering Information

The Oxoid™ Half Fraser Supplement enables enhanced recovery of stressed Listeria cells, improving detection sensitivity in early enrichment stages. Its standardized formulation ensures consistent and reliable results, making it essential for laboratories following regulated Listeria testing protocols.

The Thermo Scientific™ Oxoid™ Half Fraser Supplement is a key component in Listeria detection workflows, particularly for primary enrichment. When used alongside Fraser Broth and selective agar systems, it ensures accurate, sensitive, and regulatory-compliant microbiological testing.