Abstract: A liquid pack with a filling gland having a post fill sealed membrane interposed between the product and the, or a, surround of the opening into die filling gland. An insertor integral part of the filling gland defines a dispensing gland, piercing adaptor and/or collar. This has been both (i) engaged to said filling gland if not integral therewith and (ii) had a surround of its opening sealed to said membrane. In use a suitable piercer to be guided by or received said dispensing gland, piercer adaptor and/or collar can pierce said membrane to allow egress of the product.