A multilayer container having a structural layer of a mixture of a high density polyethylene and a linear low density maleic anhydride modified polyethylene, preferably in an amount of about 0. The first configuration and the second configuration are complementary, such that the first and second apertures engage each other at a sealing surface, whereby analyte solution within the first receptacle passes into the second receptacle substantially without leaking at the engaged first and second apertures. With this barrier, the required increased test voltage between the connection terminals can be withstood. A second packet of data being transmitted from the billing converter to the billing collector is received. In the event of a dispute between sender and recipient, the third party can provide an irrefutable record of the contents of the document and of the history of the transmission and receipt of the document Because the third party never has possession of the electronic document, the method provides maximum privacy for sender and recipient.