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Syringe Needles Point Styles For HPLC and GC Applications
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The correct point style varies depending on the intended application. Below are a few examples of common applications.
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- Manual HPLC Injections: Most manual injection valves are designed to be used with a 22 gauge Point Style 3 needle.
- Manual GC Injections: Historically a Point Style 2 was required to achieve efficient septum penetration with minimized coring. With Hamilton’s new line of GC septa there is evidence that indicates the Point Style AS will consistently extend septa life by as much as 10-fold.
- Drawing Sample: Any point style will efficiently draw a sample, but when it is important to get the last drop out of a vial use Point Style 3 or AS to reach all the way to the bottom.
