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SIS MS Filament and Heater Repair

Scientific Instrument Services by Adaptas is a world leader in the repair and manufacture of filaments for mass spectrometers and other scientific instruments. Our manufacturing capabilities include filament design, vacuum brazing, filament spot-welding, laser welding, and high purity cleaning of the filament assemblies. For a complete description of this repair service see the section on Mass Spectrometer Filament Repair and Manufacture.


Repair of Mass Spectrometer Filaments & Heaters

Most mass spectrometer filaments and heaters can be repaired and restored to a like-new condition by proper cleaning methods and by the replacement of the filament ribbon or wire, and heater coils. Scientific Instrument Services, Inc. repairs all of the filaments shown in the following pages plus many others not shown or listed in the tables.

  • Standard Filament Repairs. Filaments are repaired with the standard wire that was used on the original filament.
  • SISAlloy® Filament Repairs. Filaments are repaired with Rhenium alloy (SISAlloy®) developed by SIS. SISAlloy which is an alloy of pure rhenium doped with a small concentration of Yttria. The Yttria improves the strength of the Rhenium. The electrical characteristics of SISAlloy are identical to pure rhenium, however the filament has less tendency to sag, thereby improving filament performance.
  • Yttria Filament Repairs. Filaments are repaired with a Yttria coating applied to the original wire for improved filament performance.
  • Yttria Coated SISAlloy® Filaments. SISAlloy® filament wire can be coated with Yttria for improved filament performance. Filaments coated with Yttria emit electrons at a lower filament current and therefore they run cooler. This results in longer filament life by 2 to 3 times.


Standard Procedures for the Repair of Filaments

  • Inspected upon arrival at our facilities
  • Cleaned completely
  • Damaged or broken parts repaired or replaced
  • New filament aligned & spotwelded in place
  • Not an exchange program. Your filaments are replaced and returned to you.

For a complete description of this repair service see the section on Mass Spectrometer Filament Repair and Manufacture.

New Filaments

SIS is the world's leading manufacturer of mass spectrometer filaments Using our experience in repairing many different types of mass spectrometer filaments, Scientific Instrument Services, Inc. has redesigned several of these filaments to provide filaments that are less expensive for our customers, are more durable and have a longer life, and are easier to rebuild and clean. For a list of New Mass Spectrometer Filaments manufactured by SIS see the section entitled - New Mass Spectrometer Filaments from SIS

Shipping Instructions

Package filaments carefully when sending them in for repair

Most filament glass parts and ceramic insulators are very fragile and are easily damaged during shipment. Therefore, please package all filaments carefully to avoid damage during shipment. We recommend that you package the filaments personally. Filaments should be packaged in a box at least 6 inches square using packing peanuts or bubble pack as cushioning. We recommend shipping by UPS or Federal Express for best handling.

Ship to:
Adaptas Scientific Instrument Services
9 Second Street
Palmer, MA 01069

A purchase order must be included with the filament being repaired.