Sorption analysis of large samples

The sample tray for large objects adds another dimension to the capabilities of the SPS and Vsorp multi-sample sorption testers, enabling the analysis of the sample material itself as well as the final product in its packaging. The applicability of the sorption tester is thereby extended from research and product development to the process of package design, increasing the instrument value to the end-user.

In building physics, material and surface engineering, analysis of water vapour sorption to surfaces and component parts often requires to handle larger objects. With the large objects kit, sorption tests are not limited to small cut-out pieces or ground material. Complete parts or material pieces of sufficient size und surface area for a sorption test are analysed without any negative influence on the sorption behaviour due to sample preparation methods like grinding or cutting.

The large dynamic load range of the magnetic force compensation balance used in the SPS and Vsorp instruments enables the analysis of fine powder samples with minimum sample amount as well as of large samples with high resolution and accuracy. These may be packages and blisters of

• tablets
• sweets and candy
• powdered food
• cosmetics
• detergent tabs
• cigarettes
• seed
• fertilizer,

or other large samples like

• circuit boards
• electronic parts and devices
• paper and board
• wood
• building material.