Heathrow Scientific HS1419A Pour-Boat Weighing Dish, Polystyrene, Small, 43 mm L x 58 mm W x 13 mm D, White (Pack of 500) Flexible polystyrene boats feature smooth surfaces to provide accurate pour-outs with minimal sample loss Biologically inert and resistant to dilute and weak acids, aqueous solutions, alcohols, and bases food-grade compliant Pour-spout design easily dispenses samples without flexing the dish Manufactured and packaged in a clean room