摘要 |
A method capable of accurately and inexpensively measuring a very small quantity of impurities, such as water, contained in chemical substances, which are gaseous at normal temperature and pressure, is provided. A concentration of a very small quantity of impurities, such as water, contained in said chemical substances, which are gaseous at normal temperature and pressure, is measured by introducing the chemical substances into a cell under the condition of liquefied gases to measure an electric conductivity of said liquefied gases. <IMAGE> |
申请人 |
OHMI, TADAHIRO, SENDAI, MIYAGI, JP;NIPPON SANSO CORP., TOKIO/TOKYO, JP;HORIBA LTD., KYOTO, JP |
发明人 |
OHMI, TADAHIRO, SENDAI-CITY, MIYAGI-PREFECTURE, JP;ISHIHARA, YOSHIO, TSUCHIURA-CITY, IBARAKI-PREFECTURE, JP;FUKUSHIMA, RYOSUKE, FUNAI-GUN, KYOTO, JP |