Novasina LabMaster-aw Operating Instructions Manual page 5

2. General Product Description
2.1. System Overview
The LabMASTER-aw system has been specially developed for
determining the fraction of free water in a test sample like food,
cosmetics or pharmaceutical probes. This fraction is also known as
"water activity" in the foodstuffs industry. Unfortunately, these days
many people still confuse water activity with the water content of a
sample. Measuring the water content of a specimen, however, is
measuring the combined fraction of both bound and free water. The
water content can be determined indirectly, yet non - destructively, using
LabMASTER-aw (see SI Sorption Isotherm)
The fundamental requisite for determining water activity quickly and with
extreme precision is an excellent moisture sensor that reaches an exact,
reproducible measurement over a very wide range (moisture from
0....100% rF). Novasina has been developing special electrolytic moisture
sensors that stand out for such unique properties for more than 40 years.
The intelligent,resistive, electrolytic sensor integrated into the
LabMASTER or PARTNER-aw is based on the latest Novasina „Novalyte
Technology", with which one can guarantee such precision and
reproducibility. Thanks this technology an aw-meter as has never been
attained before.
The complete LabMASTER-aw system comprises various modular
components. The system can thus be optimally adapted to the customer
and his requirements.
The components of such a system are essentially as follows:
LabPartner-aw 1 ... 9
LabMaster-aw
PC- analysis software for LabMaster/Partner-aw
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