Introduction to the American Aqualab VSA Moisture Sorption Isotherm Analyzer:

At a constant temperature, the curve obtained with the moisture content in the sample as the vertical coordinate and the water activity (relative humidity) as the horizontal coordinate is the moisture sorption isotherm. Studying the moisture sorption characteristics of a product provides important guidance for product formulation, production, packaging, and storage. High-precision moisture sorption isotherms can be obtained within two days, with hundreds of data points collected in 48 hours.

Setting Indicators—

Set water activity indicators to stabilize the product. Predict physical changes and biochemical reactions affecting product shelf life.

Guiding Formulation—

Show the impact of ingredient or formulation changes on the product.

Highlighting Details—

Traditional isotherms collect limited data points. The AquaLab VSA analyzer collects hundreds of data points in two days to measure shelf life.

Stability—

Predict the impact of harsh storage environments such as high temperature and high humidity on shelf life.

Features of the American Aqualab VSA Moisture Sorption Isotherm Analyzer:

Manual mapping of sorption isotherms is cumbersome and time-consuming. Traditional moisture sorption analyzers are expensive, slow, and collect limited data points. The AquaLab VSA moisture sorption analyzer is easy to operate and reasonably priced. It has a short testing time and collects a large amount of data, with hundreds of data points collected in 48 hours, making it more accurate in fitting isotherm equations.

The Aqualab VSA moisture sorption analyzer is the only analyzer that can generate Dynamic Dew-point Isotherms (DDI). The AquaLab VSA can also be set for Dynamic Vapor Sorption (DVS) analysis, allowing the instrument to easily switch between the two different analysis methods.

The Aqualab VSA moisture sorption analyzer uses mirror condensation dew point technology, which is fast and can collect hundreds of data points within a few days. The included "Comprehensive Moisture Analysis Software" is powerful. It can not only generate moisture sorption isotherms and predict water activity to stabilize the product but also show the impact of formulation changes on the product's water activity,

calculate the final water activity of the formulation, and determine packaging requirements for specific shelf life.

Technical Specifications of the American Aqualab VSA Moisture Sorption Isotherm Analyzer:

Water Activity

Accuracy: ± 0.005

Repeatability: ± 0.003

Measurement Range: 0.030 ~ 0.950

Isotherm Methods: Dynamic Dew-point Isotherm (DDI) and Dynamic Vapor Sorption (DVS) Isotherm

Additional Gas: Not required. If used, no more than 7 psi

External Interface: USB

Mass Resolution: ± 0.1 mg

Water Container Volume: 20 mL

Sample Cup Capacity: 10 mL

Sample Weight: 500 ~ 5000 mg

Power Supply: 110 V ~ 200 V AC, 50/60 Hz

Weight: 12.7 kg

Temperature: 10 ~ 60 °C

Temperature Stability: ± 0.1 °C

Dimensions: 25.4 × 38.1 × 30.5 cm

Our company also sells the following products. For details, please call for consultation:

Viscometers (rotational and capillary), Sieve Analyzers (electromagnetic vibrating sieves, air jet sieves, and Tyler sieves), Water Activity Meters, Colorimeters, Melting Point Apparatus, Density Meters, Autoclaves, Ultrasonic Cleaners, UV Ozone Cleaners, Pipettes, Analytical Balances, Moisture Analyzers (infrared halogen, Karl Fischer), Centrifuges, Emulsifying Homogenizers, Magnetic Heating Stirrers, Vacuum Stirrers, Vacuum Pumps, Shakers, Water/Oil Baths, Ovens, Constant Temperature and Humidity Chambers, Incubators, Water Purifiers, Muffle Furnaces, Refractometers (brix meters), Polarimeters, Osmometers, Colony Counters, Low-Temperature Freezers, Pharmaceutical Storage Cabinets, Biological Safety Cabinets, Jacketed Reactors, Bottle Washers, Vacuum Filtration Devices