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Dupont/CEC Mass Spectrometer Supplies and Services

Scientific Instrument Services has offered a wide range of supplies and services for the DuPont and CEC mass spectrometers. If you need an item not listed, contact us. These mass spectrometers are no longer in active use.

Instruments include

CEC 21-490 single focusing 90° sector,
CEC 21-491 double focusing 90° magnetic + 95° electrc sector,
CEC 21-492 double focusing sector circa late 1960's,
CEC 21-103 single focusing 180° sector circa 1950's,
CEC 21-104 single focusing 180° sector circa late 1960's,
CEC 21-110 double focusing sector Mattauch-Herzog circa ~1960,
and others

Interesting historical links:

Filament Repair
Multipliers
Scientific Instrument Services, Inc. provides replacement detectors for your mass spectrometer. Multipliers are from the top manufacturers.
Ceramic Insulators
DST2 : Ceramic Insulator, Dupont #=294026-3, OD (in)=0.344, ID (in)=0.225, Thickness (in)=0.235,DST3 : Ceramic Insulator, Dupont #=294026-2, OD (in)=0.344, ID (in)=0.225, Thickness (in)=0.100,DST4 : Ceramic Insulator, Dupont #=294026-1, OD (in)=0.344, ID (in)=0.225, Thickness (in)=0.050
Dupont/CEC Ceramic Insulators
Ceramic insulators for Dupont/CEC.

Diffusion Pump Fluid
Pump Fluids for your lab needs.
Heater Coils
Standard size coils are used on several mass spectrometer heaters repaired by S.I.S.