The PTFE coated needles are used for thin layer chromatography (TLC) and are coated with PTFE 3/4" up the needle from the tip. The coating reduces the surface tension between the needle and the liquid making it ideal for reproducible sample spotting. These needles are available as a removable needle (RN) small or large hub and will connect to the appropriate RN syringes.
Needle Point Style GuideHamilton offers a variety of different needle point designs. Click to see which version is best for your application.
Needle Gauge IndexThe diameter of a needle is defined by its gauge. This index displays the internal and outer dimensions as well as the dead volume.
Needle Length GuideNeedle length is a critical consideration. Each needle hub design requires a slightly different length definition. This guide illustrates how to make the different measurements.
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