Globe Scientific Micro Aluminum Weighing Dishes are Ideal for microbalances, organic micro elementary and thermal analysis, and pharmaceutical use. The weighing dishes are made from sturdy yet lightweight aluminum that is oil free with no vinyl coating to create contamination problems. · Made from lightweight sturdy aluminum· Disposable· Oil residue free and non-coated· Smooth flat bottoms ensure stability and prevent tipping· Stackable for easy storing and angled sides enable easy separation when ready for use· Packaged in easy-to-use plastic containers for storage and dispensing· Crimped walls for rigidity· Smaller surface area reduces evaporation rate· Choose between round or oval weighing dishes