When selecting hypodermic tubing for your applications, you need to determine the gauge and wall size you require, as well as the overall length. Gauge sizes are easy to get confused, because you might assume, as they got larger, so would the diameters on the tubing. However, this is a common mistake many people make, as this is not the case. Instead, as the gauge sizes increase, the diameters actually decrease. In order to avoid making this error, it is better to determine the diameter required, and then use that measurement to determine the appropriate gauge size.
The wall size is another factor that has a direct effect on the inner diameters of hypodermic tubing. As the wall becomes thinner, the inner diameters increase. It is possible to find inner diameters which are relatively close to one another, but that have different wall sizes and gauge sizes. For instance, 11 gauge thin-wall tubing has an inner diameter of approximately 0.098 inches, while 12 gauge extra-thin-wall tubing has an inner diameter of approximately 0.099 inches. Either one of these may be suitable for your desired applications, but it is worth your time to obtain a small sample of each one and conduct some tests to determine how each one performs. The final thing you need to determine is the length of the tubing. Tubing is offered in standard lengths of 30 and 60 inches, and can be custom cut to your exact specifications using our secondary finishing processes.