When spotting a sample liquid onto a plurality of frameless chemical analysis films, a predetermined amount of the sample liquid is sucked into a spotting tip, the lower end of the spotting tip is brought into contact with the surface of each chemical analysis film and the pressure in the spotting tip...http://www.google.com.au/patents/US5639665?utm_source=gb-gplus-sharePatent US5639665 - Method of spotting sample liquid on dry chemical analysis film
