information for the selection of screw vials and caps

Information for the selection of Screw Vials & Caps Description of the screw threads and the nomenclature that goes with it Most Autosampler screw threads are GPI (Glass Packaging Institute) Threads, an US standard for screw threads of glass vials. The following screw threads are used for 2 ml Autosampler Vials:		Tabular View

Narrow Mouth (NM) Screw Vials & Caps 8-425 The first number deﬁ nes the outer diameter of the screw thread (8 mm). The second number refers to the cap type in this case a relatively short thread. Narrow Mouth Vials with a 8-425 thread have a neck opening of approx. 5.3 mm.		Narrow Mouth Screw Vials
For Japanese Autosampler, where the vial hangs in the rack by the cap, the 8 mm screw cap needs a flange.		Narrow Mouth Screw Vials
Agilent Technologies compatible (HP) Screw Caps 9-425 This is a 9 mm thread which was especially developped for AgilentAutosamplers so that the Robotic Arm System can handle screw vials. Agilent Technologies compatible Screw Vials have a neck opening from 5 to 6 mm.		Agilent kompatible Screw Vials
Wide Mouth (WM) Screw Vials & Caps 10-425 The first number deﬁ nes the outer diameter of the screw thread (10 mm). The second number refers to the cap type in this case a relatively short thread. Wide Mouth Vials with a 10-425 thread have a neck opening of approx. 6.1 mm		Wide Mouth Screw Vials