Introduction
The document discusses the importance of water activity (aw) measurement in determining the quality and shelf life of products, particularly in food, pharmaceuticals, chemicals, and cosmetics. Water activity is crucial for understanding the potential for microbiological growth and the stability of a product.

Meaning of Water Activity (aw)
Water activity (aw) is defined as the availability of free water in a sample, which influences microbiological growth and product stability. It is measured as the equilibrium relative humidity (ERH) of a product, expressed as a percentage of relative humidity (RH) divided by 100.

Measurement Method
The aw measurement involves placing a sample in an airtight chamber where the free water component humidifies or dehumidifies the air until equilibrium is reached. The instrument measures the stable climate conditions and converts them into an aw value.

Factors Influencing Measurement
Key factors affecting measurement accuracy and speed include sample and chamber temperature, system control capability, chamber tightness, sample preparation, and RH measurement accuracy.

LabSwift-aw Product Line
The LabSwift-aw is a portable, innovative instrument for fast and accurate aw measurement. It features contact-free infrared sample temperature measurement, a maintenance-free aw sensor, and an intuitive operation interface. It supports mobile data storage via an SD card and allows easy calibration and sensor replacement.

Technical Specifications
The LabSwift-aw operates within a measuring range of 0.03 to 1.00 aw and 5 to 45°C. It offers an accuracy of +/- 0.010 aw and a resolution of +/- 0.001 aw. The device is powered by a lithium-ion battery and features a reflective LCD display.

Conclusion
Novasina's LabSwift-aw sets a standard in mobile aw measurement with its ergonomic design, advanced features, and Swiss quality. It is suitable for a wide range of samples and offers reliable, reproducible measurements.