- Single graduation ring blasted on the neck, calibrated to contain
- A Standard Taper ground glass stopper is supplied
- Marking spots on all sizes
- Replacement stopper is 850100
- Sizes 5 mL and larger are designed from ASTM Specification E288, Class A requirements
- 1 and 2 mL sizes are test tube-shaped and are calibrated to E237 tolerances
- Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
- Unit of Measure:
- EA
