Dupont 21-490, 491 and 492 Filaments

S.I.S. has redesigned the filaments for the Dupont 490 series mass spectrometers. We use ceramic presses instead of very fragile glass presses. The result is a filament that is much stronger, much easier to rebuild, and has a longer life than the Dupont originals. The filaments come complete with rhenium ribbon filament, filament post mounted shield, and silver filament leads. For the repair of these filaments see the Dupont Filament Repair Section.

UOM=EA
Part No.	Description	ship wt.	Quantity In Stock	Price	Quantity to order
DFA	Dupont 21-490 and 491 Filament	0.3	0(#)	$203.00
DFC	Dupont 21-492 Filament	0.3	1	$203.00
(#) Standard lead-time for out-of-stock items is approximately two weeks.
Ordering information. International (non-US) prices available through your local dealer.

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