05496740 is referenced by 13 patents and cites 10 patents.

Testing apparatus is provided in the form of a pen and has a body 11 and cap 12. The body 11 has an inlet 13 at its tip which communicates with a fuel cell chamber 14, containing a fuel cell 15, and, via that chamber, with a passage 16 and a cylinder 17. A piston 18 is mounted in the cylinder 17 for operation by a button 19, a spring 21 and latch 22 such that it can draw air through the inlet 13 to the fuel cell 15. If the inlet 13 is placed in a user's mouth the apparatus can provide an indication of his breath alcohol concentration, for example, on display 23.

Title
Method and apparatus for determining the concentration of components of liquid systems
Application Number
8/199322
Publication Number
5496740
Application Date
March 2, 1994
Publication Date
March 5, 1996
Inventor
Paul M Williams
Barry
GB
Agent
Young & Thompson
Assignee
Lion Laboratories
GB
IPC
G01N 33/48
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