Thermo Scientific™ Oxoid™ R2A Agar (Dehydrated), 500G

The Thermo Scientific™ Oxoid™ R2A Agar (Dehydrated) is a low-nutrient medium specifically designed for the enumeration of heterotrophic bacteria from treated drinking water samples. This nutritionally reduced formulation facilitates the recovery of stressed and chlorine-damaged bacteria that may not grow on high-nutrient media, providing a more accurate representation of microbial populations in treated water.

Key Features

1. Enhanced Recovery of Stressed Bacteria:
   • Supports the growth of chlorine-damaged and stressed heterotrophic bacteria that traditional high-nutrient media may not recover.
2. Accurate Enumeration:
   • Provides more realistic colony counts compared to high-nutrient media by preventing the overgrowth of fast-growing bacteria.
3. Validated for Water Testing:
   • Recommended for use in testing treated water samples to detect heterotrophic bacterial populations.
4. Low Nutrient Content:
   • Optimized for longer incubation periods, allowing stressed organisms adequate time to recover and grow.

Specifications

Applications

1. Water Microbiology:
   • Enumeration of heterotrophic bacteria in treated drinking water samples.
2. Environmental Monitoring:
   • Detects and quantifies bacteria in water treatment facilities.
3. Research:
   • Studies the recovery and growth dynamics of stressed bacteria.

Preparation Instructions

1. Suspend 18.2g of R2A Agar powder in 1 liter of distilled water.
2. Heat to dissolve completely.
3. Sterilize by autoclaving at 121°C for 15 minutes.
4. Cool to approximately 50°C, mix thoroughly, and pour into sterile Petri dishes.

Advantages

• Optimized for Stressed Bacteria: Enhances the recovery of chlorine-damaged and stressed bacteria from treated water.
• Accurate Results: Prevents overgrowth by faster-growing organisms, allowing slower-growing bacteria to be accurately enumerated.
• Low Nutrient Medium: Supports realistic colony counts with longer incubation periods.
• Compliant: Meets EP, BP, and USP standards, ensuring reliability and reproducibility.

Packaging

• Quantity: 500g of dehydrated powder.
• Yield: Prepares 27.6L of medium.

Why Choose R2A Agar?

• Designed for the enumeration of heterotrophic bacteria in treated drinking water.
• Recovers stressed bacteria that traditional media may miss.
• Trusted for environmental and water quality monitoring.