Applications:

Pen cap air flow tester mainly be used to test the safety of the caps for writing and marking instruments which are designed or clearly intended for use by children up to 14 years of age. However, Caps for writing and marking instruments which are not designed or intended for use by children, e.g. jewellery pens, expensive fountain pens, professional technical pens, are not be test by this method.

Standards:

ISO 11540  

BS 7272-1

GB/T 24110