Figure 1: Watertightness tube apparatus to find perforations and tears via freedom from holes testing for used medical surgical gloves. A) Technical drawing of the watertightness tube / filling tube according to ISO EN 455-1:2000 [14]. B) Manufactured watertightness tube made out of polycarbonate with two cylinders of six centimeters outer diameter; glove was stretched over each of the cylinders up to a maximum of four centimeters and attached with a rubber seal.