A spill proof liquid sample cup is provided having an outer shell and an inner liner. The inner liner defines a sample chamber. The inner liner is spaced inwardly from the outer shell such that a test chamber is formed between the outer shell and the inner liner that is fluidly separate from the sample...http://www.google.fr/patents/US6955099?utm_source=gb-gplus-shareBrevet US6955099 - Spill proof liquid sample cup