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Clear Glass With PTFE Stoppers Pipet access is easy with wide-mouth, volumetric flasks Superior strength, durability and safety from heavy, uniform walls Quick identification with large, permanent, easy-to-read markings Flat interior bottoms for stirring with standard stir bars Accuracy - graduated...

Calibrated "to contain " Standard Taper stoppers (4997K13 to K76) Size 2 mL is test-tube shape and not marked A (as tolerances are larger) Sizes 5 mL and larger are designed for Federal Specification NNN-F-289 and meet ASTM Standard E 288 Capacity/stopper size given in listings Supplied...

Cylinders are calibrated to contain at 20º C and are provided with SAFE-GUARD bumpers (25mL and larger) and hexagonal bases that are flat ground for added stability. Designed from ASTM E1272 Style 1 Class A requirements. The primary function of a "to contain" cylinder is to receive...