Argon gas purification machine JB Type Argon gas purification machine CharacteristicsThe new CZA-4C, CZA-4B and CZA-4N are ... , the least valve among the same level , operating easily.The machine belongs to one-time investment, without consumables at using (except ... of 99.999%,cannot purify the nitrogen in argon.The machine can remove the impurities of nitrogen, oxygen, water in argon ...