Non-invasive method of determining residual liquid reagents

摘要

A method of determining the volume of liquid reagent remaining in a reagent bottle in a chemical analyzer, using a known air pressure to test the volume, or rate of pressure build-up, produced by the air volume remaining in a bottle of known empty volume for such liquid reagent. The tested pressure, or rate of pressure build-up, is compared against the pressure or rate produced by such bottle when empty, or such bottle when full. Pressure readings are taken preferably before the end-point pressure is achieved.