Ratchet Connector Gas Line 1/4-28 x 500 Assembly. Used to connect argon supply line from ICP instrument to a Glass Expansion Direct Connect DC Nebulizer. Requires choice of ICP Gas Inlet Fitting Type to match instrument make and model as follows: Type 11/32/61 (70-803-1934) for Agilent (Varian) Vista/700-ES Series ICP-OES, 4100/4200 MP-AES, Analytic Jena ICP-MS, Leeman, and Thermo Neptune & Element ICP-MS. Type 13/31 (70-803-1504) for Agilent 5100/5110/5800/5900, Agilent 7700/7800/7850/7900/8800/8900, Horiba, Thermo, Analytic Jena ICP-OES, PG Instruments. Type 21 (70-803-1069) for PerkinElmer ICP-OES, Spectro, Helios. Type 22 (70-803-2110) for PerkinElmer Elan/NexION 300/350 Series ICP-MS. Type 23 (70-803-2111) for PerkinElmer NexION 1000/2000/5000 ICP-MS. Type 41 (70-803-1562) for Shimadzu ICP-OES and ICP-MS. Type 51 (70-803-1857) for Nu Instruments. Type 52 (70-803-2048) for Nu Instruments TOF-ICP-MS.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001