Water Activity Measurement

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The measurement of water activity or equilibrium relative humidity (ERH) is a key parameter in the quality control of moisture sensitive products or materials. If there is too much water in a product, there is a risk of microbial growth and water migration. This can lead to clumping, changes in consistency and reduced shelf-life. Manufacturers of foods and pharmaceutical products must, for example, show to the FDA that the water activity of a product has declined to such an extent that bacteria can no longer grow.

Desktop Devices

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HygroLab C1 - high-end laboratory device

ROTRONIC provides a high-end laboratory device – the HygroLab C1 – for water activity measurements with up to four probes. Connect station probes and insertion probes for measuring water activity in cheese, meat, tobacco, building materials, animal feed, pharmaceuticals products and much more. For more details, click here.

Hand-Held Units

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HygroPalm - HP23-AW-A - portable analyzer

In many situations it can be very useful to measure water activity in production or storage rooms, e.g. inspection of bulk materials to ensure they meet specifications. The HygroPalm 23-AW-A is ideal for measuring water activity in production processes such as random checks of cheese, meat, tobacco, building materials, animal feeds, bakery products, paper, medicines, horticulture, agriculture, etc.

Applications

The HygroPalm HP23-AW-A offers the perfect solution for on-site water activity measurements to confirm product stability and indicate shelf life. The HP23-AW-A is suitable as a mobile laboratory unit. Equal to the HygroLab C1 the HP23-AW-A is perfect as a portable analyzer with two probe inputs for any suitable HC2 probe. The HP23-AW-A can also be used in conjunction with HW4-P-QUICK-Vx.

Portable and convenient

Handheld instrument specially configured to suit the water activity user. It includes many of the advanced features of the HygroLab C1, but in a convenient portable configuration.medicines, horticulture, agriculture, etc.

For more details, click here.

Water Activity Probes

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HC2-AW Probe

Water activity probe suitable for HygroLab and HygroPalm instruments with digital signal processing. For more details, click here.

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HygroClip2 HC2-HP28/HC2-HP50

Handheld Probe for Measuring Bulk Packaged Materials.

The insertion probe is suitable for measurement in bulk materials, bricks, concrete, etc. It measures humidity and temperature and calculates the dew/frost point.

Applications

10 mm insertion probe: measurements in dusty bulk materials such as flour, sugar, etc.

For more details, click here.

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