How to tell the difference: Graphite can be written with carbon cannot

• Insert fresh carbon rod in carbon evaporator source
• Attach carbon evaporator source to rod A&C and grounded rod 14cm from grid
• Move stop over sample to prevent C from coating during off gassing
• Lower bell jar
• Close safety latch on bell jar
• Push "cycle" wait for bell jar to pump down to 10-4
• Turn dial to #0 (L)
• Switch LT selector to A (10V)
• Switch on LT
• Turn the selector up to # 4 to off gas contamination slowly
• Move sample stop away from sample
• Make sure variable control is at 0
• Add liquid nitrogen to the LN2 trap
• Allow vacuum to recover to 5x10-6 - may need to be restarted
• Turn variable switch slowly until a glow is present
• Hold for 30 seconds to condition carbon tip
• Turn up variable control slowly to around #6, if sparks are seen back down on the power
• Coat to desire thickness
• Turn down variable control
• Turn selector switch to "0"
• Press "vent"

Visit Cryo EM Web site at http://www.nysbc.org/facilities/CEM

-- DavidStokes - 18 Mar 2005

• Set ALLOWTOPICCHANGE = CemfacGroup