Martino Marisa Nardo

US Patent:

7977099, Jul 12, 2011

Filed:

Aug 15, 2008

Appl. No.:

12/192624

Inventors:

Oscar Nardo - Padua, IT
Martino Nardo - Cumberland RI, US
Piero Franco - Cumberland RI, US

Assignee:

Hanna Instruments, Inc. - Woonsocket RI

International Classification:

G01N 33/14
G01N 27/06

US Classification:

436 24, 422 681, 422 8201, 436 20, 436131, 436132, 436149, 436150

Abstract:

The present invention provides a low-cost, easy-to-use, and accurate method and apparatus for determining alcohol content in a test sample, such as wine. The method for alcohol content determination includes the following steps. A known quantity of a test sample is provided. A measurement of electrolytic conductivity EC0 of the test sample is taken. Next, a known quantity of conductive additive with known composition is added to the test sample to produce a first solution. A measurement of Electrolytic conductivity EC1 is taken for the first solution. Data representing predetermined values for EC0 and EC1 with corresponding known alcohol concentrations is provided for comparison. The electrolytic conductivity values for EC0 and EC1 are cross-referenced against the known data to determine a value for the alcohol concentration of the test sample. In addition, the values for EC0 and EC1 are adjusted for temperature and other variables.

US Patent:

D462024, Aug 27, 2002

Filed:

Oct 15, 2001

Appl. No.:

29/149701

Inventors:

Martino Nardo - Cumberland RI
Oscar Nardo - Padua, IT
Piero Franco - Cumberland RI

Assignee:

Hanna Instruments, Inc. - Woonsocket RI

International Classification:

1004

US Classification:

D10 81, D10 57, D10 62