 More Chemistry: Fire Assay 0000-0-00 Fire Assay is a technique which analyzes the amount of precious metal (gold, silver, palladium and platinum) in a sample of ore or scrap. It is generally regarded as the most accurate (0-00 ppb or 0.0g/t), economical, and consistent method for gold analysis, though it is time consuming. 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 