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R2A

R2A is a recognized formulation in microbiological media, specifically designed for the enumeration of heterotrophic bacteria in treated water and other low-nutrient environments. The medium was developed to recover stressed, chlorine-injured, and slow-growing organisms that may not thrive on standard nutrient-rich agars. 3G Electric supplies the R2A line of microbiology media, which includes ready-to-use agar plates, prepared liquid media in bottles, and dehydrated powder for laboratory preparation. These products are used in water quality testing, pharmaceutical water systems, and industrial cooling water monitoring, where accurate heterotrophic plate counts are required. The R2A media portfolio from 3G Electric covers multiple formats: 100 mL and 250 mL bottles of prepared agar, 500 mL bottles of both prepared agar and powder, and 100 x 15 mm plates. Prepared plates and liquid media are manufactured under controlled conditions and have a 180-day shelf life for bottles and 90 days for plates, while the powder form offers a 2-year shelf life. The media are solid or powder forms, with the solid media ready for pour-plate or spread-plate techniques. The low-nutrient composition of R2A supports the recovery of bacteria that would otherwise be outcompeted on high-nutrient media, making it suitable for samples with low microbial loads or injured populations. 3G Electric provides global logistics and technical documentation for the R2A line, including manufacturer part numbers such as 250EZ-3100-250, 125EZ-3100-100, MP3100, 7390-500g, and 500EZ-3100-500. Buyers can request datasheets, shelf-life information, and handling guidelines to support laboratory accreditation and quality control. The R2A media are manufactured to consistent standards, with each lot tested for performance. 3G Electric maintains inventory across these SKUs to serve laboratories, environmental monitoring programs, and industrial water treatment facilities. The product line is part of a broader offering of microbiology supplies, and 3G Electric supports procurement with global shipping, documentation, and responsive customer service. For plant engineers and maintenance managers, R2A media are relevant in cooling tower monitoring, wastewater analysis, and process water quality checks. The media are not intended for clinical diagnosis but are widely used in industrial and environmental testing. 3G Electric can assist with selecting the appropriate format based on sample volume, throughput, and laboratory workflow. Whether using prepared plates for convenience or powder for cost-effective bulk preparation, the R2A line provides a consistent basis for heterotrophic plate count methods. 3G Electric ships these products worldwide, with logistics support for temperature-sensitive items where required. The company also provides access to safety data sheets and certificates of analysis upon request. This ensures that laboratories can maintain compliance with internal and regulatory requirements. The R2A brand is known for its role in water microbiology, and 3G Electric supplies the full range of formats to meet diverse testing needs. By offering multiple SKUs, 3G Electric enables customers to standardize on a single medium source while accommodating different laboratory scales and preferences. The product summaries and specifications are available for each SKU, allowing technical buyers to verify compatibility with their existing procedures. 3G Electric does not manufacture these products but distributes them as part of its industrial and laboratory equipment portfolio. The company's focus is on providing reliable access to specialized media and supporting the procurement process with accurate information and global reach.

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About R2A

R2A is a recognized formulation in microbiological media, specifically designed for the enumeration of heterotrophic bacteria in treated water and other low-nutrient environments. The medium was developed to recover stressed, chlorine-injured, and slow-growing organisms that may not thrive on standard nutrient-rich agars. 3G Electric supplies the R2A line of microbiology media, which includes ready-to-use agar plates, prepared liquid media in bottles, and dehydrated powder for laboratory preparation. These products are used in water quality testing, pharmaceutical water systems, and industrial cooling water monitoring, where accurate heterotrophic plate counts are required. The R2A media portfolio from 3G Electric covers multiple formats: 100 mL and 250 mL bottles of prepared agar, 500 mL bottles of both prepared agar and powder, and 100 x 15 mm plates. Prepared plates and liquid media are manufactured under controlled conditions and have a 180-day shelf life for bottles and 90 days for plates, while the powder form offers a 2-year shelf life. The media are solid or powder forms, with the solid media ready for pour-plate or spread-plate techniques. The low-nutrient composition of R2A supports the recovery of bacteria that would otherwise be outcompeted on high-nutrient media, making it suitable for samples with low microbial loads or injured populations. 3G Electric provides global logistics and technical documentation for the R2A line, including manufacturer part numbers such as 250EZ-3100-250, 125EZ-3100-100, MP3100, 7390-500g, and 500EZ-3100-500. Buyers can request datasheets, shelf-life information, and handling guidelines to support laboratory accreditation and quality control. The R2A media are manufactured to consistent standards, with each lot tested for performance. 3G Electric maintains inventory across these SKUs to serve laboratories, environmental monitoring programs, and industrial water treatment facilities. The product line is part of a broader offering of microbiology supplies, and 3G Electric supports procurement with global shipping, documentation, and responsive customer service. For plant engineers and maintenance managers, R2A media are relevant in cooling tower monitoring, wastewater analysis, and process water quality checks. The media are not intended for clinical diagnosis but are widely used in industrial and environmental testing. 3G Electric can assist with selecting the appropriate format based on sample volume, throughput, and laboratory workflow. Whether using prepared plates for convenience or powder for cost-effective bulk preparation, the R2A line provides a consistent basis for heterotrophic plate count methods. 3G Electric ships these products worldwide, with logistics support for temperature-sensitive items where required. The company also provides access to safety data sheets and certificates of analysis upon request. This ensures that laboratories can maintain compliance with internal and regulatory requirements. The R2A brand is known for its role in water microbiology, and 3G Electric supplies the full range of formats to meet diverse testing needs. By offering multiple SKUs, 3G Electric enables customers to standardize on a single medium source while accommodating different laboratory scales and preferences. The product summaries and specifications are available for each SKU, allowing technical buyers to verify compatibility with their existing procedures. 3G Electric does not manufacture these products but distributes them as part of its industrial and laboratory equipment portfolio. The company's focus is on providing reliable access to specialized media and supporting the procurement process with accurate information and global reach.

Common Applications

  • Water treatment plants — R2A Agar plates (MP3100) for heterotrophic plate counts of potable water
  • Pharmaceutical manufacturing — R2A Agar in 100 mL bottles (125EZ-3100-100) for purified water monitoring
  • Industrial cooling systems — R2A Agar powder (7390-500g) for preparing media for cooling water bacterial counts
  • Environmental laboratories — R2A Agar in 500 mL bottles (500EZ-3100-500) for high-throughput water sample testing
  • Food and beverage processing — R2A Agar plates (MP3100) for monitoring process water and rinse water quality
  • Research facilities — R2A Agar in 250 mL bottles (250EZ-3100-250) for studying stressed bacterial populations in low-nutrient environments

Frequently asked questions

Common questions about R2A from 3G Electric.

What is R2A Agar and what is it used for?

R2A Agar is a low-nutrient microbiological medium formulated for the enumeration of heterotrophic bacteria in water and other low-nutrient samples. It is designed to recover stressed, chlorine-injured, and slow-growing organisms that may not grow well on standard plate count agar. Typical applications include potable water testing, pharmaceutical water systems, and industrial cooling water monitoring. The medium supports heterotrophic plate count (HPC) methods and is available in prepared plates, liquid bottles, and dehydrated powder forms from 3G Electric.

What formats of R2A media does 3G Electric supply?

3G Electric supplies R2A media in several formats: prepared agar in 100 mL and 250 mL bottles (SKUs 45H370 and 45H371), prepared agar in 500 mL bottles (SKU 45H372), 100 x 15 mm plates (SKU 45H473), and dehydrated powder in 500 mL bottles (SKU 39M572). The prepared liquid media and plates are ready to use, while the powder requires preparation according to standard microbiological procedures. Each format has specific shelf-life and storage requirements, detailed in the product specifications.

What is the shelf life of R2A Agar products?

Shelf life varies by format. Prepared R2A Agar in 100 mL, 250 mL, and 500 mL bottles has a 180-day shelf life. R2A Agar plates (100 x 15 mm) have a 90-day shelf life. The dehydrated powder form (500 mL bottle) has a 2-year shelf life when stored properly. These shelf lives are based on manufacturer specifications and assume appropriate storage conditions, typically at 2-8°C for prepared media and room temperature for powder. Always refer to the product label and certificate of analysis for specific lot information.

Can R2A Agar be used for pour-plate and spread-plate methods?

Yes, R2A Agar in prepared liquid form or dehydrated powder can be used for pour-plate methods after melting and cooling to approximately 45-50°C. Prepared plates are suitable for spread-plate or membrane filtration techniques. The medium's low nutrient content supports the growth of stressed organisms, and its solid form allows for colony enumeration. For optimal recovery, follow standard microbiological procedures and incubate at the appropriate temperature, typically 20-28°C for water samples, for the recommended duration.

What is the manufacturer part number for R2A Agar plates?

The R2A Agar plates supplied by 3G Electric have the manufacturer part number MP3100. These plates are 100 x 15 mm in size and have a 90-day shelf life. They are ready for use in heterotrophic plate count testing and are packaged to maintain sterility. For ordering, use SKU 45H473. 3G Electric can provide documentation including certificates of analysis and safety data sheets upon request.

How should R2A media be stored?

Storage conditions depend on the format. Prepared R2A Agar in bottles and plates should be stored at 2-8°C, protected from light, and used within the stated shelf life. Dehydrated powder should be stored in a cool, dry place, tightly sealed to prevent moisture absorption, and has a 2-year shelf life. Avoid freezing prepared media. Always allow plates and bottles to equilibrate to room temperature before use. Refer to the product label and safety data sheet for specific handling instructions.