This complete 250 mL PYREX® Kuderna-Danish Concentrator apparatus consists of a 3-ball Snyder column with 24/40 Standard Taper joints (2158-3CO), a 250 mL flask with a 24/40 outer Standard Taper upper joint and 19/22 inner Standard Taper lower joint, and a 10 mL graduated tube with 19/22 outer Standard Taper joint. The tube graduations go from 0 to 2 mL in 0.1 mL increments and from 3 mL on in 1.0 mL increments. If further concentration is desired, select a 2-ball column (2158-2CO) and combine with the Kuderna-Danish tube of your choice. The apparatus is held together using glass hooks and two 1 1/4 inch stainless steel springs.
Product Family Description:
The complete apparatus consists of a 3-Ball Snyder column (with standard taper 24/40 joints), a flask (with standard taper 24/40 tops and standard taper 19/22 lower joint), and a graduated tube (with standard taper 19/22 joints). If further concentration is desired, select a 2-Ball column (Cat. No. 2158-2CO) and combine with the Kuderna-Danish tube of your choice. The 250 mL and 500 mL completes include a 10 mL tube. The 1000 mL complete includes a 25 mL tube.
- Cat. No. 2158-250 includes a pair of stainless steel springs.
- Cat. No. 2158-500 includes springs and two sizes of Keck clamps.
- Cat. No. 2158-1L includes a pair of stainless steel springs.