Nalgene Class B Accuracy Acrylic Burets 100 ml (Case of 4)
- Delivery end is fitted into a plastic push button stopcock which permits drop by drop delivery.
- Small screw clamp adjusts drop speed as needed for titration.
- Polyethylene filling tube extends from the top of the burette into the bottle reservoir.
- Bottle, screw cap and round base are polyethylene plastic.