In a pump for feeding a liquid for chromatography, first and second plungers form first and second volumes respectively together with first and second chambers, the first plunger is prevented from changing the first volume sufficiently for feeding the liquid between the first and second volumes when...http://www.google.es/patents/US6923916?utm_source=gb-gplus-sharePatente US6923916 - Liquid chromatograph pump and control method therefor
Liquid chromatograph pump and control method therefor
