A protection system is provided for the transfer of toxic liquid from a bulk container through a first conduit to a connector for a delivery device such as a dosage syringe. A second conduit connects the connector to a waste receptacle. The first and second conduits penetrate the closed end of a flexible...http://www.google.com.au/patents/US5289858?utm_source=gb-gplus-sharePatent US5289858 - System for accommodating withdrawal of liquid from a bulk supply
