Like all organisms, microorganisms rely on available water in food for growth. They take up water by moving it across the cell membrane. This water movement mechanism depends on a water activity gradient – on water moving from a high water activity environment outside the cell to a lower water activity environment within the cell. […]
What is Temperature Mapping Study? Temperature mapping study is a study to verify that the entire enclosed storage maintains a temperature within the permitted levels. A Temperature Study involves the collection of temperature around the length and breadth of a storage areas example like cold room, warehouse or chiller. Normally the temperature recording will take […]
What is Process Validation? Process validation is establishing documented evidence which provides a high degree of assurance that a specific process will consistently produce a product meeting its pre-determined specifications and quality characteristics. In another words, Process validation is an action providing in accordance with the principles of Good Manufacturing Practice, that any procedure, process, […]
Water activity is an important property. It predicts stability with respect to microbial growth, rates of deteriorative reaction, and physical properties. Thus, worldwide food safety agency has incorporated water activity into safety regulations. These regulations detail specific requirements and practices to assure that products are produced under sanitary conditions and are pure, wholesome and […]
What’s a Ducted Fume Hood ? Many laboratories have ducted fume hoods installed. A chemical ducted fume hood is a significant safety device that is critical to maintaining acceptable laboratory air quality and preventing user exposure to potentially harmful chemicals. Yet, the fume hood is the most misunderstood and misused safety device in the laboratory. […]
WATER ACTIVITY (aw) is derived from fundamental principles of thermodynamics and physical chemistry. As a thermodynamic principle there are requirements in defining water activity that must be met. These requirements are: pure water (aw = 1.0) is the standard state, the system is in equilibrium, and the temperature is defined. In the equilibrium state μ = […]
Complete Calibration and Preventive Maintenance Service for MeterFood’s Aqualab Water Activity Meter Model includes : Pawkit, Aqualab 3, Aqualab Pre, Aqualab Series 4/TE/TEV, AQ3 and VSA Team Medical & Scientific Sdn. Bhd. (TMS) is the sole agent and licensed calibration service provider for MeterFood’s Aqualab Water Activtiy Meter. TMS Water Activity Meter Calibration and Preventive […]
A brief history of germicidal UV light : 2014 outbreak of the Ebola virus and the recent spread of the novel coronavirus disease 2020 (COVID-19) have generated renew interest in germicidal ultraviolet (UV) lamps for disinfection. UV radiant energy was first used for disinfecting surfaces in 1877, then in water since 1910 and in air […]
