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1. (WO2017167560) LATERAL FLOW TEST STRIP COMPRISING MOISTURE-SENSITIVE RESISTORS

Pub. No.:    WO/2017/167560    International Application No.:    PCT/EP2017/055484
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Thu Mar 09 00:59:59 CET 2017
IPC: G01N 33/558
Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
Inventors: NEWSOME, Christopher
MACCARTHY, Niall
Title: LATERAL FLOW TEST STRIP COMPRISING MOISTURE-SENSITIVE RESISTORS
Abstract:
An analytical test device (1) includes a lateral flow type strip (3). The lateral flow type strip includes a region (4) for receiving a liquid sample (2) and a path (5) for transporting the liquid sample (2) away from the sample receiving region (4). The analytical test device (1) also includes at least one moisture-sensitive resistor (6n) disposed in the sample receiving region (4) and/or along the path (5), each respective resistor (6n) arranged to be exposed to the liquid sample (2) when the liquid sample (2) reaches the resistor (6n). The analytical test device (1) also includes a circuit (7) configured to signal (18) progress of the liquid sample through the strip (3) in dependence upon resistances of the moisture-sensitive resistor(s) (6n).