Method for improving quality and functionality of filter paper suitable for collecting biological samples
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United States of America Patent
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Jun 13, 2017
Grant Date -
Jan 2, 2014
app pub date -
Feb 2, 2012
filing date -
Feb 18, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for diminishing variation between and/or within individual sheets of filter papers which are suitable for collecting samples of biological material, e.g. blood, is described. The method includes at least one of the following: subjecting the sheets of filter paper to gaseous substance containing at least 30 grams water per cubic meter and/or wetting the sheets of filter paper with water and subsequently drying the sheets of filter paper. According to tests, the above-described treatment significantly reduces the undesirable variation between results analyzed from sheets of filter paper and impregnated with same biological material for test purposes.
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