Gas sensor speeds up packaging tests

A modified atmosphere packaging (MAP) sensor just introduced in the UK market speeds up the process of testing that the correct mix of gasses have been used in a product.

Tendring Pacific said it has gained the right for the exclusive UK distribution of the new PBI Dansensor CheckMate II. "The sensor is less dependent on head space volume and analyses a very small sample of O2 or CO2 gases in packs allowing for an extremely short measuring time, reducing the potential of sampling faults and further enhancing product shelf-life," the company claimed. MAP is used extensively in the food industry to extend shelf life. Typically, air is removed from the space above the food and inert gases such as carbon dioxide (CO2) and nitrogen are flushed in. CheckMate II features an integrated pump that automatically withdraws the gas sample when the sampling syringe penetrates the pack. A water trap within the syringe prevents liquids from being sucked up and causing damage to the sensitive sensor system. Users also have the option of upgrading to the SmartPen, a syringe with a protected needle that extends to pierce a pack for sampling and retracts on removal, reducing the risk of injury to the user, the company claimed. The CheckMate II can run up to 500 different programmes to sort and measure data for specific products or machine lines. To assist traceability, data relating to a product or machine line can be imported via a barcode reader. A new USB feature permits the secure download of information onto a memory stick or desktop computer.