DETECTING A CHEMICAL IMPURITY

摘要

The invention is a detector (15) which comprises: a probe (17) insertable into a drink; processing means (13) coupled to the probe; and an indicator coupled to the processing means; wherein the processing means is configured to receive a signal from the probe and compare said received signal with a stored reference to determine whether a liquid into which said probe is inserted includes a chemical impurity, the processor being configured to operate said indicator in the event that said liquid is determined to include a said chemical impurity. The invention is also a method of detecting a chemical impurity in a liquid of a drink, the method comprising: inserting a probe (17) into the liquid; connecting the probe to a source of electric potential; measuring a response of said liquid; comparing said response to a reference; determining whether a liquid into which said probe is inserted includes a chemical impurity; and indicating that said liquid includes a said chemical impurity.