GRADUATED ADDITION FUNNEL Cylindrical funnels have a pressure equalizing line, a PTFE stopcock, and a lower drip tip Graduations to the stopcock are numbered both up and down The 299280 and 299281 series are supplied with an 850400 glass hex-head stopper; the others are supplied without a stopper Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements Capacity (mL) : 1000 Graduation Intervals (mL) : 10 Height (mm) : 450 Standard Taper Joints : 24/40 Plug Type : PTFE Replacement Plug : 821001-0004 Stopcock Bore Size (mm) : 4 Top : Standard Taper, no Stopper Case Qty : 1