Color Comparison Tubes Colorimetric Tube with Stopper, 25ml, Pack of 6
Made of glass, good thermal stability, chemical stability, mechanical properties,high transparency.
Standardized glass tubes used to fill with standard solution colors for visual color comparison with similar tubes containing solution samples.
In contrast, two colorimetric tubes were placed in front of white paper of the same degree of illumination, and the color difference was observed with the naked eye.
Color comparison tubes are used for visually comparing solution sample colors.
AmScope EG-SM Microscope Eyepiece Eyeshields or Eye-guards
This eye-guards fit all AmScope SW, SM and ZM series stereo microscopes. They fit any eyepieces with 33 - 35mm O.D., including Nikon, Leica, Olympus and wild type stereomicrosocpe eyepieces..