Laboratory instrument for accurate water activity (aw) measurement Product safety Microbiological stability

„All life needs water!“ There is no life without water! Air and water the important elements on earth for any life „Water means life!“ Thanks to water, life has developed and new life continues to develop. „Life needs water“. Water is the „elixir of life“ for animals, humans and plants. But bacteria, fungi and viruses also need water to live. Water is stored in every product. Either in the form of a chemical compound with other molecules or as free water, which is stored between the compounds. What is the optimum amount of both types of water now? The amount of bound water is depending on the...

Novasina, the market-leading provider of accurate water activity measuring instruments LabPartner-aw Enter the world of water activity! For over 40 years Novasina has been developing globally recognised and accurate water activity measuring instruments for quality and research laboratories. The unique measuring technology is based on an electrolytic aw value measurement as well as on simple operability and sample conditioning. These are the key factors for correct and repeatable measurements. Thanks to new functions, the effective measuring accuracy and reproducibility could be improved and the...

The LabMaster / Partner-aw product range With the LabMaster-aw measuring instrument you acquire a lifelong aw laboratory device, which is upgradeable at all times thanks to its advanced technology. Extra LabPartner-aw’s can simply and easily be attached to a LabPartner-aw as additional measuring units. A LabMasteraw manages and operates up to 9 LabPartner-aw’s using a common communication cable. As a result, for the first time it is possible to measure up to 10 samples simultaneously. The intelligent network (fieldbus system) independently recognises a new user and correspondingly links this...

The aw value measuring method The test sample is placed in a completely sealed and temperature-stabilised measuring chamber. After sealing, the sample humidifies or dehumidifies the air volume inside the chamber. Only the free water component can do this. This exchange takes place until the partial pressure of water vapour saturation = zero. A highly accurate humidity and temperature measuring unit continuously determines the climate conditions of the air within the measuring chamber. If these parameters remain stable over a user-adjustable period, the instrument software determines the stable...

Novasina – Swiss quality, flexibility and competence Since its establishment almost 50 years ago, the Novasina company has specialised in the accurate measuring of air and material humidity. The basis of this was the world’s first, self-developed electronic measuring sensor for measuring humidity. This technology is based on the resistive electrolytic measurement principle. This was further developed and optimised over decades. This measuring principle is generally the most demanding and most accurate. Modern substances and materials allow continuous optimisation and expansion of the area of...