These weighing vessels reduce preparation time, perfect for busy labs analyzing a lot of samples. Each vessel complies with the following methods: SM 2540, ASTM D5907, BS EN 15216:2007. Each vessel is treated to conform with ASTM D5907 Standard Test Methods for Filterable Matter (Total Dissolved Solids) and Nonfilterable Matter (Total Suspended Solids) in Water, then individually printed with the final weight. The material is lightweight, inert to water or wastewater components, and heat resistant. Vessels cool quickly decreasing wait times between heating and weighing.