Wide-mouthed, shallow glass,dish-shaped Dewars, fitted in stainless steel protective containers. Suitable for use with magnetic stirrers, and designed to accept standard boiling flask up to 2L in capacity for rapid freezing tempering of stirring rods or pestles. The shallow form allows for minimum amount of coolant to be used. All Dilvac Dewar flasks are manufactured to exacting standards and represent the highest quality units available today for laboratory use. No handles or lids.