Specifications

17
Figure 3 – system is closed Figure 4 – system is open to vacuum
10. After 30 minutes, switch the system to argon for 5 – 10 seconds (should look like figure
1).
11. Repeat steps 8 – 10.
12. Repeat step 8 and 9.
13. Close the system by turning the bottom knob to its horizontal position (should look like
figure 3).
14. Switch the top knob to argon (should look like
figure 2).
15. On the flask, unscrew the black screw knob so
the bulb and the top joint are now open to each
other.
16. SLOWLY open the middle solvent knob (figure
5). (*NOTE* - as indicated by figure 5, the
solvent knob does not need to be fully opened!
You only need to have a steady flow of solvent).
17. Fill flask about halfway and close the middle
solvent knob by returning it to a horizontal
position (should look like figure 2).
18. Finally, open the flask to argon by turning the
bottom knob to a vertical position (should look
like figure 1).
Figure 5 – system is open to solvent
Argon
Vacuum
Argon
Vacuum
Argon
Vacuum