Kimble KIMAX Nessler APHA Color Comparison Tubes are ideal for color comparison. Available in matched sets of 6 or 12. Shadowless bottom of each tube transmits undistorted light. Rings and legend are durable white ceramic enamel which correspond with specific volumes of liquid. Graduated ring scale of any of the tubes within a matched set will not vary from that of any other tube within the set by more than 1.5mm for the 50mL and 2.0mm for the 100mL sizes. The 50 mL size is specifically mentioned by the American Public Health Association in Standard Methods for the Examination of Water and Waste Water.
(Sample Photo Displayed. Individual items may differ from the image shown)
O.D. x Ht. (mm): 20 x 300
Grad. at (mL): 50
Scale Length (mm): 200-220