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Agrichemicals

Many agricultural products will exhibit ‘complex moisture sorption behavior’

Many fertilizers, plant growth agents, pesticides and herbicides are manufactured from or delivered as particulate products. The formulation, performance and stability of these products is often critically effected by moisture. The ability to measure water sorption isotherms quickly and accurately has been one major reason for the products being used successfully in this sector.

The moisture sorption properties of many solid state materials, especially organic materials are critical for the characterisation of their drying and shelf life stability. In the past 10 years the DVS method invented by Surface Measurement Systems has become the standard laboratory method for studying drying and dehydration behaviour.

pdficon_small Application Note 02: Moisture Sorption of EC Standard Reference Material RM 302 on a DVS-1 Instrument

The moisture sorption properties of many solid state materials, especially organic materials are critical for the characterisation of their drying and shelf life stability. In the past 20 years the DVS method invented by Surface Measurement Systems has become the standard laboratory method for measuring water sorption isotherms.

pdficon_small Application Note 02: Moisture Sorption of EC Standard Reference Material RM 302 on a DVS-1 Instrument

The vapour pressure is an important property of pesticides and herbicides where is is a key property for environmental and toxicology reasons.The DVS Vacuum can determine the vapour pressure of solids using the well established Knudsen cell method. Additionally, the vapour pressure of solids is a property that reflects both thermodynamic stability and shelf life of agrichemical solids.

Application Note 48: Vapor Pressure Measurement using Knudsen Method | Request a copy

Water activity is a measure of the thermodynamic activity of a material in the presence of water vapour. The DVS is an ideal way to measure the water activity of solid materials across a wide range of temperatures.

Application Note 01: Validation of Relative Humidity using Saturated Salt Solutions | Request a copy

The measurement of diffusion and permeation of vapours and liquids through real packaging devices is important for the development agrichemical products. Typical requirements of these packaging systems are that the ingress and/or loss of moisture over long storage periods must be kept to a minimum in order to prolong the shelf life of the product and such data can be accurately determined using DVS instrumentation.

Application Note 07: Measurement of Diffusion of Liquids and Vapors Through Real Polymer Tube Packaging Devices
| Request a copy

Application Note 12: Absolute Measurement of Moisture Diffusion into Blister Packaging Systems | Request a copy

Application Note 16: Diffusion Thin Films | Request a copy

The chemical, morphological and physical stability of agrichemical products to water vapour is key to both product performance and long term product storage. The DVS range of instruments are ideal for studying the moisture stability of a range of dosage forms such as granules, capsules, powders and tablets across a wide range of relevant temperatures.

Application Note 08: Moisture Sorption of Coffee Granules Studied using the DVS-µScope | Request a copy

Application Note 09: Measuring the Moisture Sorption Kinetics of Cements using DVS | Request a copy

pdficon_small Application Note 10: Moisture Sorption of EC Standard Reference Material RM 302 on a DVS-1 Instrument

Application Note 11: Moisture Stability of Powdered Milk Formulations | Request a copy

Screening the performance of a range of different agrichemical formulations in the presence of water vapour can be easily achieved using the DVS approach. DVS measurements are ideal for studying the formulation performance of a range of dosage forms such as granules, capsules, powders and tablets, as well as the raw ingredients which make up the final product.

Application Note 08: Moisture Sorption of Coffee Granules Studied using the DVS-µScope | Request a copy

Application Note 09: Measuring the Moisture Sorption Kinetics of Cements using DVS | Request a copy

pdficon_small Application Note 10: Moisture Sorption of EC Standard Reference Material RM 302 on a DVS-1 Instrument

Application Note 11: Moisture Stability of Powdered Milk Formulations | Request a copy