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GC Accessories
Features of ETP Electron Multipliers
• Proprietary specialized surface material resulting in very high secondary electron emission.
• Air stable.
• 2-year shelf life guarantee.
• Discrete dynode design results in extended operating life.
The electron multipliers manufactured by ETP use a proprietary dynode material. This material has a number of properties that
make it very suitable for use in an electron multiplier. It has very high secondary electron emission, which allows exceptional gain
to be achieved from each dynode. This material is also very stable in air. In fact, an ETP multiplier can be stored for years before
being used. As a direct result of the high stability of the active materials used in ETP multipliers, they come with a 2-year shelf life
warranty (store in original sealed package). Many testing laboratories take advantage of this long shelf life by keeping a replacement
ETP multiplier on hand, ready for immediate installation. This keeps the instrument down time to a minimum.
For a typical ETP electron multiplier for GC/MS, the total active dynode surface area is ~1000mm
2
. This can be compared to a standard
continuous dynode multiplier that has a total channel surface area of only around 160mm
2
(for a channel with 1mm diameter and
50mm length). This increased surface area spreads out the work-load of the electron multiplication process over a larger area, effec-
tively slowing the aging process and improving operating life and gain stability.
NEW!
Electron Multipliers for Mass Spectrometry
By Sue Benes, GC Accessories Product Marketing Manager
• The multi-dynode approach of all ETP electron multipliers results in longer
lifetimes and better sensitivity compared with channel electron multipliers or
continuous dynode multipliers.
• Optimized ion and electronic optics and unique dynode shapes for maximum
performance.
• Increased surface area for enhanced sensitivity and extended operational life.
ETP Electron Multipliers for Mass Spectrometry
*Note: The electron multipliers have been specifically developed to retrofit the original manufacturer’s equipment. The detector incor-
porates a modular design to facilitate ease of replacement and additional innovations intended to enhance performance. First time
installation requires a mount which includes the mechanical housing. After initial installation, only the replacement electron multiplier
is required.
†This unit is designed for use in the 5975, 5973 GC and the LC/MSD.
Description
qty.
cat.#
price
For Agilent 5970 GC-MS
ea.
23072
For Agilent 5971, 5972, GCD GC-MS
ea.
23073
For Agilent 5973 & 5975 GC-MS (includes mount for initial installation)*†
ea.
23074
For Agilent 5973 & 5975 GC-MS and LC-MSD (Replacement Multiplier)*†
ea.
23075
For Agilent LC-MSD (includes mount for initial installation)*†
ea.
23076
For API 300, 3000 & 4000 Applied Biosystems
ea.
23077
Electron Multipliers for Agilent GC-MS and LC-MS
Electron Multipliers for Applied Biosystems (Sciex)
for
more
info
For more information on ETP
Electron Multipliers, request
lit. cat.# GNFL1000.
Cat# 23074
please note
Other electron multipliers are available upon request. Call 800-356-1688 ext. 4, or contact your
local Restek representative, for information on other models.