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Replacement Parts
Description Part No.
MS interface column nut, female 05988-20066
Column nut for long or long two-hole ferrules 05921-21170
Universal column nut, 2/pk 5181-8830
Remedy
• Check interface nut for tightness. Replace if necessary.
•
Check and leak test the GC injection port.
Symptoms of leaks
• Higher than normal vacuum manifold pressure or foreline pressure
• Higher than normal background
• Peaks characteristic of air (m/z 18, 28, 32, and 44 or m/z 14 and 16)
• Poor sensitivity
• Low relative abundance of m/z 502 (this varies with the tune program and MSD used)
MS interface column nut, 05988-20066
Universal column nut, 5181-8830