
4TEV Water Activity Meter
Manufacturer: AquaLab
SKU: Inquire
Description
The AquaLab 4TEV Water Activity Meter is an analytical instrument designed to measure water activity (aw) in a wide variety of materials, from food products to pharmaceuticals and industrial materials. Its key feature is the inclusion of two distinct sensors: a standard dewpoint sensor for non-volatile samples and a dedicated volatiles capacitance sensor for samples containing compounds like ethanol or propylene glycol. Users can select the appropriate sensor via the instrument's menu. For measurement, a 7.5 ml sample is placed in a cup and sealed within the chamber. The dewpoint method, used for non-volatiles, employs an infrared beam to determine the dewpoint temperature of the sample vapor, translating it to a water activity value with an accuracy of ±0.003 aw. For volatile samples, the polymer-based sensor measures the equilibrium relative humidity in the sample headspace, with a stated accuracy of ±0.015 aw. The meter delivers readings typically within five minutes, offers verifiable calibration with independent salt standards, and is noted for its repeatability across different users and locations. It has a measuring range from 0.030 to 1.000 aw, weighs approximately 7 pounds for portability, and includes features for administrative data security. Its applications span baked goods, meats, cereals, nuts, spices, cosmetics, plastics, and tobacco.
Specifications
| Item | 4TEV Water Activity Meter |
| Company | AquaLab |
| Price | Inquire |
| Catalog Number | Inquire |
| Quantity | EA |
| Measuring Range | 0.030 to 1.000 aw |
| Measuring Time | < 5 min |
| Applications | Baked and Snack Foods, Beef Jerky, Candy and Confectionery, Cereal and Grain Products, Coffee/Tea, Cosmetics, Dried Distillers Grain, Dried/ Dehydrated Products, Materials, Nuts/Dried Fruit, Pet Food, Pharmaceuticals, Plastics, Processed/Cured Meat, Sauces/Dressings, Seed Longevity, Spices, Tobacco, Vegetable Oil |
| Accuracy | +/- 0.003 aw |