Testing of materials for semiconductor technology; determination of impurities in carrier gases and doping gases; determination of oxygen impurity in N<(Index)2>, Ar, He, Ne and H<(Index)2> by using a galvanic cell
半导体技术材料测试;载气和掺杂气体中杂质的测定;用原电池测定氮、氩、氦、氖和氢中的氧杂质