All plastic squeeze tube will have an orifice to squeeze out the content. Then how to measure orifice size? We can measure it via calipers. Below picture is for reference.

People may not pay attention to the orifices and even think different sizes of the tubes have the same orifice sizes. In general, content with different density is an important point for deciding the orifice size. Basically, the small orifice is suitable for squeezing out thin content, the big orifice is suitable for squeezing out thick content. For the oily /watery skin care products or makeups, we will suggest using plugs (flat or nozzle) with a small orifice (around 1.5-2 mm) or 2 in 1 nozzle head, but the nozzle plugs or nozzle head is mainly available for the small cosmetic tubes.

Btw, we should also think about the flip top cap orifice. According to the density of contents, we could use different cap orifice. The point about using what orifice, we must conduct the squeezing test with samples that may easily be forgotten.

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Auber specializes in manufacturing cosmetic tubes for more than 15 years. If you need any support in plastic squeeze tubes for cosmetics, health care, pharma, etc, welcome to visit our website www.cosmetic-tube.com .