These Nessler tubes are ideal for
color comparison.
·Shadowless bottom of each tube
transmits undistorted light
·Rings and legend are durable white ceramic
enamel which correspond with specific volumes of liquid
·148115-10 thru 148115-12 series is
unmatched
·148115-15 thru 148115-17 series is
supplied in a matched set of 6
·Graduated ring scale of any of the tubes
within a set will not vary from that of any other tube within the set by more
than 1.5 mm for the 50 mL and 2.0 mm for the 100 mL 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
·Manufactured from 33
expansion, low extractable borosilicate glass conforming to USP Type I and ASTM
E438, Type I Class A requirements