Several different Hamilton needle point styles are offered on our syringe and needle products, depending on the application. The correct point style varies depending on the intended application. Below are a few examples of common applications.
- 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.
- Manual HPLC Injections: Most manual injection valves are designed to be used with a 22 gauge Point Style 3 needle.
- 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.
- Animal Injections: Animal injections require the sharpest needle possible. The recommended needle point style for this application is a Point Style 4 at a 12° bevel. For applications where injection site depth is critical or the target is small, a more vertical bevel as shown below, such as a 30 or 45°, is suggested.