Interscience presents BagSystem®, the solid sample preparation system for the microbiologist, biochemist and cell biologist.

With 25 years of experience in the improvement of quality control, the French company INTERSCIENCE has developed a system for preparing solid samples prior to bacterial analysis.

The BagSystem® is a complete range of BagMixer® blenders and sterile BagFilter® filter bags, together with all necessary accessories such as bag openers and holders, racks, closing clips and automatic pipets. Designed for food microbiology, cosmetics and pharmaceuticals, the BagSystem® is both hygienic and safe. Samples being analyzed never come into contact with the mixing chamber and run no risk of alteration or cross contamination.

The sample and diluting liquid are put in a sterile BagFilter® filter bag. The filter bag is placed in a BagMixer® blender. The sample is then crushed and mixed by the alternative movement of the paddles. The resulting suspension can be pipeted out free of particles, which are retained by the filter.

Unlike rotating blade mixers, BagMixer® uses blending paddles activated by a powerful motor which press the sample bag in such a way as to blend the sample while preserving cells for microbiological analysis. The stainless steel units are equipped with a fully opening window door to allow visual control of the blending process and easy cleaning of the unit. Two types of durable filter bags are available for the BagMixer®: BagFilter® and BagPage®. These bags have built-in, welded filters that ensure the removal of large particles before analysis. They are available in different sizes, from 80 to 3500 ml.

Usually, when a solid sample is prepared by mixing with a diluant, some fibrous particles remain in the solution. This can interfere with analysis results. With BagPage® and BagFilter® any solid fibers are separated from the filtered sample.

Accessories for the system include BagClip®, for closing the filter bags; BagRack®, a stainless steel rack that stores twelve bags; BagOpen®, an individual bag stand; BagPipet®, a fully autoclavable pipet with calibrated 0.1, 0.9 or 1.0 ml sampling nozzle; and BagSeal®, a thermo-sealing unit.

Already a world’s bestseller, the new BagMixer® 400 with a patented adjustable paddle system can be adapted easily to all kinds of samples. Together with its variable speed, it ensures a quicker and higher recovery rate of bacteria.