DEMETER™ Food Microbiology Media Preparation System

DEMETER Food Microbiology Media Preparation System

The DEMETER™ is a highly traceable food microbiology testing lab instrument that automates the Media Preparation steps in the food testing process, resulting in both higher lab productivity and increased testing accuracy. DEMETER™ delivers versatile flexibility for a lab, allowing it to run multiple tests with different media, and eliminating the need for an autoclave to heat and sterilize the test media. The system features a bar code scanner that records sample information from each test into an internal buffer that can be interfaced to a lab information management system (LIMS). This feature streamlines the recordkeeping needed to maintain yearly lab accreditation per ISO 17025:2005 standards, and to the increased regulatory compliance resulting from the passage of the Food Safety Modernization Act (FSMA).

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  • Automatically dispense sterile water with high precision, accuracy, and traceability for temperature and volume
  • Increase lab throughput with quick, high capacity performance
  • Procedural time savings entering Incubator at Incubation temperature
  • Sterilization of components prevent bacteria growth through 3 methods: heat, UV, and filtration
  • Documented traceability through system by streamlining audit procedure for yearly ISO/IEC 17025:2005 lab inspection
  • Lab specific customization through programmable recipes
  • Volumetric dispense accurately with secondary weight confirmation


  • Heater: Patented Heateflex® Coil
  • Power: 9.6kW, 208VAC 3ph, 27amp
  • Dispense Capability: 90ml – 4L
  • Temperature: 203°F (95°C)
  • Temperature Accuracy ±2°C (Contingent on Customer’s Facilitation)
  • Dispense Accuracy ±2% (Contingent on Customer’s Facilitation)
  • Scale Accuracy: ±1%
  • Filtration: 3 Filters, Final Filtration to 0.2 µm
  • UV Lamp: 254nm
  • Recipes: 16 Recipes/Dispense for volume and heat
  • Thermal Couple: NIST Traceable


  • LIMS Interface
  • Non-volatile data storage for the 100 most recent dispenses


Ideal Applications include environmental, food microbiology, and food manufacturing QA/QC labs conducting pathogen testing for the following:

  • E Coli O157:H7
  • Listeria
  • Salmonella

Demeter assists in automating media preparation with many media reagents including the following:

  • BPW – Buffered Peptone Water
  • BPBW – Butterfield’s Phosphate Buffered Dilution Water
  • TSB – Trypticase Soy Broth
  • LB – Lactose Broth
  • Fraser Broth