Feeder Beaker Description Beakers suitable for nursing, rehabilitation and elderly care. Each container is made of durable, translucent polypropylene (or clear polycarbonate, where noted) to allow themonitoring of hot and cold liquid intake. The lids are interchangeable among all beverage containers providing maximum versatility and practicality. All Independence Drinkware items are microwave safe and dishwasher safe to 109°C (228°F) and all are latex free. ;; Feeder Beaker Description Beakers suitable for nursing, rehabilitation and elderly care. Each container is made of durable, translucent polypropylene (or clear polycarbonate, where noted) to allow themonitoring of hot and cold liquid intake. The lids are interchangeable among all beverage containers providing maximum versatility and practicality. All Independence Drinkware items are microwave safe and dishwasher safe to 109°C (228°F) and all are latex free.