A method for taking a sample from a closed test tube without removing the stopper of the test tube. According to the method, the stopper of the test tube is pierced with a disposable piercing needle through which the sample is taken to the sample receptacle of the sampling device. From there the sample...http://www.google.fr/patents/US6324926?utm_source=gb-gplus-shareBrevet US6324926 - Method and device for taking a sample from a closed test tube
Method and device for taking a sample from a closed test tube
