Use the chart below as a guide to estimate the tube size to hold a given volume. The actual practical fill volume will depend on fill temperature, product viscosity, required head space, type of filling machine, etc. Tube neck size and use of a peelable TE membrane also affect the fill volume.
To use the table, select a volume in millilitres (ml) from the bottom row. Looking directly above one can see the tube body length to hold that volume, corresponding to different tube diameters, as listed in the left hand column of the table. For example a tube to hold 50ml would have a nominal body length of 142mm if the diameter is 25mm. Or 50ml could be packed in a tube with 108mm long body and diameter 30mm.
- At 25oC and 1 Atm. one ml of water weighs one gram. One hundred grams is approximately equal to 3.5 oz
- Volumes indicated in the table allow for enough headspace to seal tubes without contents overflowing.