JIS K1107:1985 pdfダウンロード。High Purity Nitrogen 1.Scope This Japanese Industrial Standard specifies the high purity nitrogen for industrial use，hereinafter referred to as the “nitrogen” , that is filled in a high-pressure gas container under such state as liquefied nitrogen or compressed nitrogen. 2.Classification Nitrogen shall be classified into two grades of Grade 1 and Grade 2 accordingto quality. 3.Quality The quality of nitrogen when it is tested in accordance with the specificationof 4. shali conform to the requirements specified in following Table; 4.Testing Method 4.1Generals The generals common to tests shall conform to JIS K 0050. 4.2Calibration of Analysis ApparatusThe calibration...