HOW TO CHOOSE BOTTLES?

Neck Finish and Cap

• Understanding a container’s neck finish is an important step in proper closure/bottle sourcing.
• Screw thread closure sizes are expressed in two numbers.
• The first number refers to the closure diameter (in mm) and the second number represents the GPI finish (the top of the container).
• For example, a neck size of 28-410 has a diameter of 28 mm and fits a container with a 410 GPI thread finish.