Kimble 45325A-50 Borosilicate Glass 50mL Nessler APHA Color Comparison Tube with Cap Stopper
- Nessler tubes are standardized glass tubes used to fill with standard solution colors for visual color comparison with similar tubes containing solution samples.
- Shadow-less bottom transmits undistorted light.
- no dark spots form when tube is filled with liquid and viewed from the top using a light source beneath the tube.
- Standard taper cap style stoppers need not be removed to take readings.
- "Shadow-less" is printed on the side of the stopper to distinguish these stoppers.
- Rings and legend are durable white ceramic enamel.
- rings coincide with specific volumes of liquid.
- graduated ring scale of any tube will not vary by more than 1.5mm from that of any other tube within the set.