Versatile pH measuring instrument in the purest pure area of the world in the employment

The Fraunhofer Society ranks among the prominent organizations for applied research in Europe. It operates application orientated research to the direct use for private and public enterprises and for the well-being of the society, does not take part however not in basic research. Among the clients rank industrie or service enterprise and the public institutions. The 57 institutes for Fraunhofer employ over 15.000 coworkers at more than 40 locations in Germany. The annual research budget amounts to 1.4 billion euros. By the research centers and by addresses in Europe, the USA, Asia and in the Near East an intensive international cooperation is maintained. The emphasis of the institute lies in the ranges enterprise logistics, automation and robotics as well as surface technique. At the Fraunhofer IPA tested materials and devices will provide Fraunhofer IPA TESTED DEVICE with the quality seal � �. Thus the pure space fitness for the different device classes is certified. On the basis of physical and micro-biological tests detailed information is collected over the examined object or material and the appropriate certificate is issued. Our partner at the Fraunhofer IPA is Markus cellar of the department pure-grants Mikroproduktion.Der Super-ReinraumDie department of Reinst and micro production is concerned with technical questions to production processes for miniaturized and contamination-critical products, which are to be found e.g. in the semiconductor manufacturing, in the automotive manufacture and within the Life Science range. The presentation object of this department is � the purest � pure area of the world: Its purity exceeds the ISO pure class of area 1, the officially purest class at all, tenfold. This � superpure area �, in the positive pressure prevails, with laminar air flow of 0,45 m/s is supplied. The temperature amounts to 22 �C and the relative air humidity 45%. Markus cellar explains: � the SevenMulti � S47 is used at the Fraunhofer IPA to verschie those places for different purposes. � the most important tests: - Cleanableness of surfaces all in hygenic production environments used surfaces must in accordance with the regulations of the European Hygienic engineering & To clean and disinfect Design Group (EHEDG) particularly easily its. Polished high-grade steel surfaces are considered as ideal. For the measurement of the cleaning effect before and according to the cleaning with the surface contact method the microbe number is intended (illustration 1 and 2). For this one is pressed with feeding agar coated Petri plate 5 seconds long with a given Kraft on the surface. With this test procedure serve the SevenMulti � and in-lab routine pro pH electrode for the preparation and accurate pH value attitude of the feeding agar. - Microorganisms plastic surfaces can colonize metabolism of materials under certain climatic and environmental condition and spread there. Their presence can harm not only the plastic, but also impair the function of the components contained in the plastic. For the investigation of the effect of microorganisms on plastics that uses Fraunhofer IPA the European test status pool of broadcasting corporations EN ISO 846. The micro-biological effect on the plastic samples is examined in a carbon-free nutrient medium. If no growth on the growth medium takes place, then the sample does not contain growth nutrients and metabolism can be excluded. The SevenMulti � S47 two-channel instrument is used, in order to stop with sterile 0.01 Mol/L a NaOH solution the pH value of the mineral salt supply solution. In the following pass-pointlike further operational areas of the SevenMulti are listed �: - Examination of the acidity of rinsing solutions with tests for extractable metal examination of the pH value when washing not pH-stable organic particles, e.g. Forerunners of medicines to prevent or them to stabilization Uberwachung of high-purity water with the new InLab 741 and the SevenMulti � add-on unit for Leitf�higkeitsmessungen.Die both latter applications are usually implemented in the pure area (fig. 3). In this case the SevenMulti must be thoroughly cleaned �. In addition the cleaning with isopropanol and the drying process belong in the pure air flow. Markus cellar is to be high-content: � thanks of the two-channel functionality of the SevenMulti � S47 know we with only one instrument efficiently and precisely all pH and conductivity measurements would drive through. �

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