UNIFIED STRIP FOR REAGENTS Russian patent published in 2017 - IPC B01L3/00 B01L9/00 G01N35/10 

FIELD: chemistry.

SUBSTANCE: universal reagent strip comprises a strip with upper and lower sides, comprising the first and the second pipette shells having opposite sides, a tube for handling and a container with an opening extending through the reagent strip. The first and the second pipette shells comprise the first and the second pipette tip apertures, each containing a single hole on the upper side of the strip with a possibility of introduction of the first and the second pipette tip into the first and the second pipette shell. Each of the first and the second pipette shells is configured to substantially cover the length of the first and the second pipette tip. According to the first version of the reagent strip, the container adapted to receive a reagent tube, the first pipette shell comprises a pair of apertures. At that, the pair of apertures comprises the first and second holes moulded using a rod and extending through the side wall of the first pipette shell. Wherein the first and the second holes moulded using a rod, are arranged on opposite sides and are equidistant along the first pipette shell from the first aperture of the pipette tip. According to the second version of the reagent strip, the first and the second pipette shells have different lengths, measured from the first and the second apertures of the pipette tip. A method for detection of presence or absence of the pipette tip within the pipette shell of the reagent strip includes optical beam passing through the first hole of the apertures pair and checking whether the said beam emerges freely through the second opening of the said pair of apertures. Unobstructed beam exit from the second hole of the first pipette shell indicates the absence of the pipette tip within the first pipette shell. Blocked beam exit from the second hole indicates the presence of the pipette tip within the first pipette shell. According to the version, it is determined, whether the first pipette tip passes inside the pipette shell from the first aperture of the pipette tip to at least the first hole location. A method to determine the length of the pipette tip inside the pipette shell of the reagent strip includes light passing through the first hole of the upper and lower pair of apertures of the pipette shell. It is checked whether the light passage through the second holes of the upper and lower pair of apertures of the pipette shell is blocked. Blocked light passage through the second holes of the upper and lower pair of apertures means that the pipette tip inside the first pipette shell has a length that does not reach down to the lower pair of apertures of the pipette shell, when administered to the first pipette shell. According to the version, it is determined, whether the pipette tip extends in the first pipette shell from the first aperture of the pipette tip to the upper and lower holes.

EFFECT: efficient sample processing, contamination and analysis inaccuracy.

28 cl, 15 dwg