Developed to facilitate the introduction of solid or viscous materials directly into the bottle.
- Etched vertical line used to anchor calipers is centered in a contrasting darkened band, which makes visualization easier
- Scale is permanent brown stain
- Three rubber stoppers are supplied with each bottle
- Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements