Walter Stern Shallow Form Watch Glasses

Walter Stern Shallow Form Watch Glasses. Watch glasses are supplied with flat flanged base discs to allow for varied curvitures of the perimeter. Flat bottoms admit large amounts of water for effective cooling without forming a dangerous accumulation of debris which could contaminate a liquid sample. The funnel-shaped indentation beneath the lower lip of each glass admits a small amount of water for effective mixing without contaminating the optical properties. The funnel-shaped indentation at t