Water Activity Testing

Water activity (Aw) testing measures the availability of water for microbial growth and chemical reactions. Essential for shelf-life prediction and safety assurance of food products.

Water Activity Analysis

  • Precise Aw measurement (0.01 Aw unit accuracy)
  • Determination of microbial growth potential
  • Shelf-life prediction
  • Moisture interaction assessment
  • Stability under various conditions

Why Water Activity Matters

  • Microbial growth control without preservatives
  • Chemical reaction prevention
  • Enzyme activity inhibition
  • Long-term shelf-life assurance
  • Product quality maintenance

Safe Aw Ranges

  • Most bacteria: Aw > 0.86
  • Most molds: Aw > 0.70
  • Osmophilic yeasts: Aw > 0.60
  • Stable products: Aw < 0.60

Testing Applications

  • Dried food products
  • Shelf-stable foods
  • Cannabis and hemp products
  • Extracts and concentrates
  • Long-term storage stability prediction

Testing Methods

  • Chilled mirror dew point sensors
  • Humidity-based instruments
  • Temperature-controlled chambers
  • Rapid measurement capability