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Appendix B
5/20/2009
30
portion of a Bunsen burner or muffling at 550
o
C
for 90 minutes.
17.4.3.9.2. Silver Tungstate / Magnesium Oxide on
chromosorb: Removes fluorine, phosphorus, and
arsenic.
17.4.3.9.3. Silver Oxide / Silver Tungstate on chromosorb:
Removes sulfur and halogens (except fluorine).
17.4.4.
Reduction Tube
17.4.4.1.Pack about ¾” of quartz wool into the bottom of the tube
from the opposite end.
17.4.4.2.Fill the tube with copper wire while gently tapping to tightly
settle the copper and avoid channeling.
17.4.4.3.Pack another plug of quartz wool into the tube against the
copper.
17.4.4.4.Insert a rolled-up piece of silver gauze into each small
diameter tube end.
| 1| 2 | 3 | 2 | 1|
#1 - Silver gauze
#2 - Quartz wool
#3 - Copper wire
17.4.5.
Carbon Dioxide Trap and Gas Scrubbers (3)
17.4.5.1.These three tubes are identically packed even though the
Scrubbers are a larger diameter. Pack a ¼” plug of quartz
wool into one end of the tube.
17.4.5.2.Add 3½” Ascarite (Colorcarb) while gently tapping the tube.