BY PACKAGING


Quality Control Test for Rubbers

Fragmentation test for rubber closures

  1. Place a 4 mL of water in each of 12 clean vials. Close a vial with closure and secure caps for 16 hours.
  2. Pierce the closure with a hypodermic needle. Repeat the operation 4 times for each closures.
  3. Count the number of fragment visible on the rubber. Total number of fragment should not be more than 10 except butyl rubber.