The seat tube of Ratiomed, for stool sample removal, and have a Weitmündigen spoon, a tight screw-on lock and complies with the DIN EN 829. Features from chair tube Made from plastic - transparent Overlapping screw connection - Brown Reliable seal Weitmündiger spoon Complies with the DIN EN 829 - Shipping stool samples Size Guide from the chair tube 13 ml/16x100 mm/pack of 1000 15 ml/20X76 mm/flat bottom/pack of 1000 30 Ml/25X107 mm/flat bottom/pack of 500) Areas of Use from chair tube For Bohnengroße stool sample For shipping stool samples