Class A Schellbach Borosilicate Glass Burette with Glass Stopcock, Blue Graduations Essential Supplies 125-inch inner diameter with a

125-inch inner diameter with a rod grip up to 5/8 inch for larger flasks on a retort stand

and brass strips fixed to a wooden ring with outer wax-holding cups

with screw adjustment tuning pressure to avoid cracking thin-wall glass

and shop classrooms

paired with a 13 mm curved enamel-coated steel blade for portable benchtop and laboratory measurement tasks

Class A Schellbach Borosilicate Glass Burette with Glass Stopcock, Blue Graduations Essential Supplies 125-inch inner diameter with aDark Schellbach stripe inlaid behind the scale sharpens meniscus reading during precision titration, paired with a ground glass stopcock for traditional flow control.