Extrusion International 3-2017

37 Extrusion International 3/2017 localizing testing methods, as well as combinations of the two, using helium or hydrogen as a tracer gas. The device combines high perfor- mance, reliability and repeatability with extremely short cycle times. This leak detector is designed for demanding testing situations with minimal background signals and enables short overall cycle times. The robust iridium filaments also ensure long durability. Particular applications for this device are the automotive industry but also the field of electronic and mechanical components, and refrigeration and air conditioning. Optical emission spectroscopy It is important that packaging pre- serves the stable condition of partic- ularly moisture-sensitive medication such as dry powders for inhalation; at the same time, it must also prevent biological substances from the pack- aging from ingressing into parenter- al drugs. This necessitates the use of high sensitivity integrity testing. The method used by the AMI measures leak tightness using a patented pro- cess that does not require a tracer gas. Instead, this method uses the existing gas mixture in the cavities in- side the packaging to perform high- sensitivity testing over an extended measuring range. The procedure of- fers great flexibility: a variety of dif- ferent packaging types such as blister packs, pouches, vials, plastic bottles, and sealed parts such as battery cas- ings, can be tested in this way. A big advantage of the AMI is its wide measuring range that also of- fers higher sensitivity than conven- tional tests. As a result, the AMI de- vice can perform helium leak testing and rough leak testing with just one device. The procedure delivers de- terministic test results with high re- peatability, irrespective of the user, and with reliability and accuracy that comply with USP 1207.1. ed for watertightness. Sensitivity of up to 5·10 -6 mbar l/s can be achieved with this method. Micro-FlowandMass Extraction tech- nology offer a number of advantages over other leak testing methods that work with air. The speed of testing and their low susceptibility to ambi- ent changes are notable examples of this. They also stand out due to their higher sensitivity and accuracy, and do not require calibration on a daily basis. Leak detection with tracer gas The ASI 35 leak detector delivers ex- cellent performance in integral and Pfeiffer Vacuum www.pfeiffer-vacuum.com Pfeiffer Vacuum ASI 35 modular leak detector Integrity testing of high-sensitivity medication packaging and sealed highly sophisticated parts using Pfeiffer VacuumAMI