Similar to CG-1864, but with the addition of a lower standard taper inner joint to allow collection into a vessel having a 24/40 outer joint. Available with MEDIUM or COARSE porosity fritted glass resin support. A serrated hose connection is sealed on the inner joint for connection to a vacuum source. The "T"-Bore stopcock has an 8mm O.D. sidearm for connection to nitrogen, while the serrated hose connection has an O.D. of 8mm at the middle ring.