Testing of materials for semiconductor technology; determination of impurities in carrier gases and doping gases; determination of water impurity in hydrogen, oxygen, nitrogen, argon and helium by using a diphosphorus pentoxide cell
半导体技术材料测试;载气和掺杂气体中杂质的测定;用二磷五氧化二磷电池测定氢、氧、氮、氩和氦中的水杂质