A liquid level sensor is used on a sealed container comprises a heat source bonded to the container, a first temperature sensor mounted on the container adjacent the heat source, and a second temperature sensor mounted on the container spaced from the heat source. Since the number of test vectors is increased in a SOC, the number of \u20180\u2019s is increased if adjacent test vectors are properly aligned using an ordering algorithm. The composition is in particular free of guar gum, is dust-free, is dispersible in water and has a pleasant taste and can be supplemented straightforwardly with vitamins, minerals, trace elements and the like. The first chamber has a fixed volume and contains a pressurized gas. The cutter blade has a cutting edge with a middle region of a first sharpness and outer side regions adjacent opposite sides of the middle region of a second sharpness that is sharper than the first sharpness. The receipt may be shared via data transfer, facsimile or email, or may be shared through a receipts management software or application.