Abstract: A method for stabilizing an enzyme during freezing, wherein the enzyme is in a zwitterionic buffer solution. The zwitterionic buffer is able to maintain the activity of the enzyme during freezing and thawing.
Type:
Application
Filed:
September 12, 2001
Publication date:
May 16, 2002
Applicant:
RANDOX LABORATORIES LTD.
Inventors:
Stephen Peter Fitzgerald, John Campbell, John Victor Lamont, Marlene King
Abstract: A method of analysing an image to obtain an image value. The image comprises a defined array of pixel values. The method comprises
(1) determining the highest pixel value in the image;
(2) calculating a lower threshold pixel value from the highest pixel value determined in step (1) in accordance with a predetermined algorithm; and
(3) obtaining the image value by statistically analysing the pixel values in the image which lie in a range defined by the lower threshold pixel value calculated in step (2).
Type:
Grant
Filed:
August 21, 1998
Date of Patent:
January 22, 2002
Assignee:
Randox Laboratories Ltd.
Inventors:
Stephen Peter Fitzgerald, Robert Ivan McConnell, John Victor Lamont
Abstract: Liquid dispensing apparatus comprises a support member which supports a movably mounted dispensing member. The support member is movable between first and second positions. A single drive system causes the dispensing member to move relative to the support member to a number of dispense positions while the support member is in its first position and causes the support member to move to the second position.
Type:
Grant
Filed:
April 19, 2000
Date of Patent:
October 30, 2001
Assignee:
Randox Laboratories LTD
Inventors:
Stephen Peter Fitzgerald, John Victor Lamont, Robert Ivan McConnell, James Rudolf Meyer
Abstract: First and second reactants that give a signal when mixed in the presence of an analyte in a liquid sample, are separately contained in sol-gels that release the reactants in the presence of the liquid. For example, when the first and second reactants respectively comprise an oxidant and a reductant, and the reaction provides a detectable signal, the system can be used to detect the presence of contaminants in a water sample. The sol-gel may be obtained by reaction of water with, per part by volume thereof, at least 2 parts of a metal alkoxide, and drying the resultant gel.
Type:
Grant
Filed:
November 16, 1998
Date of Patent:
May 15, 2001
Assignee:
Randox Laboratories Ltd.
Inventors:
Stephen Peter Fitzgerald, John Victor Lamont, Robert Ivan McConnell