Kimax 45315A-50100 Borosilicate Glass 50mL-100mL Nessler APHA Standard Color Comparison Tube (Matched Set of 6)
- Nessler tubes are standardized glass tubes used to fill with standard solution colors for visual color comparison with similar tubes containing solution samples.
- Shadowless bottom transmits undistorted light.
- no dark spots form when tube is filled with liquid and viewed from the top using a light source beaneath the tube.
- graduated ring scale of any tube will not vary by more than 2.0mm from that of any other tube within the set.
- Rings and legend are durable white ceramic enamel.
- rings coincide with specific volumes of liquid.
- Designed from Federal Specification NNN-T-175, Type 1, Class 2 requirements.