Method and apparatus for determining the concentration of components of liquid systems,申请号US19940199322-传众专利搜索

Method and apparatus for determining the concentration of components of liquid systems

申请公布号：US5496740(A)

申请号：US19940199322

申请日期：1994.03.02

申请公布日期：1996.03.05

申请人：

LION LABORATORIES PLC

发明人：WILLIAMS, PAUL M.

分类号：G01N33/497;(IPC1-7):G01N33/48

主分类号：G01N33/497

摘要：PCT No. PCT/GB92/00864 Sec. 371 Date Mar. 2, 1994 Sec. 102(e) Date Mar. 2, 1994 PCT Filed May 14, 1992 PCT Pub. No. WO93/05893 PCT Pub. Date Mar. 18, 1993.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.