 More ANALYTICAL CHEMISTRY OF THE NOBLE METALS - Fire 0000-00-00 FIRE ASSAY Classical lead assay Without any doubt the classical lead assay has proved to be the most import-ant procedure for the concentration and isolation of the noble metals. In 0000 Beamish stated that during 00 years of research in this field he had not experienced a single example of failure of the classical assay to find a paying ore. More Determination of Silver by Fire Assay Gravimetry 0000-0-0 The fire assay gravimetry is an old and classical method. It is one of most commonly used and most effective methods for the separation and analysis of precious metals due to strong representativeness, high accuracy and good stability. However, the fire assay gravimetry also has some disadvantages such as long analytical procedure and systemic lower analytical results (especially for More 