Scientific Instrument Services is the world's leading supplier of mass spectrometer parts and supplies.
For more mass spec products and information, see the A. General Mass Spectrometry and B. Mass Spectrometer Instrument Supplies sections of our catalog.
SIS has been servicing and repairing mass spectrometer filaments for more than 30 years. We can repair filaments for mass spectrometers, leak detectors, RGA systems, X-Ray systems and much more. SIS also redesigns and manufacture filaments based on our experiences in filament repair. We now manufacture filaments for many manufacturers and for end users. If you need custom designed and manufactured filaments, give us a call.
SIS has been manufacturing direct probes for mass spectrometers for more than 15 years. These include DIP (direct insertion probes) and DEP (direct exposure probes) for many manufactures instruments. SIS also custom manufacturers direct probes for instrument manufacturers or specific customer needs. Recently we introduced the SIS AutoProbe - an automated direct exposure probe for the Thermo Finnigan TRACE MS/DSQ/PolarisQ. In addition we can supply glass jet separators and other custom mass spectrometer interfaces.
SIS offers a wide range of ceramic insulators for mass spectrometer sources. Washers, tubes and solid rod high purity alumina ceramic insulators for most mass spectrometers are available. In addition we have parts and accessories for most mass spectrometers manufactured in the last 20 years. If you don't see or find it, give us a call and we will see if we can make it or get it for you.
The NIST 08 Mass Spectrometer database of more than 220,000 mass spectra with structures is available from SIS. SIMION Version 8.0 is the industry standard software for electron ion optics modeling - this is used to design mass spectrometer ion optics. David Sparkman's book entitled "Mass Spec Desk Reference" is a hand reference tool for any mass spectrometer user.
SIS markets the Detech, Burle and ETP multipliers for mass spectrometers. So whatever your requirements for an electron multiplier, we can supply it. Multipliers are normally is stock for immediate shipment.
In addition to cleaning and repairing mass spectrometer filaments, SIS also cleans and services mass spectrometer sources, repairs vacuum flanges and vacuum feed-throughs, repairs GC inlets and repairs many other mass spectrometer and gas chromatograph parts. Our shops have been expanded over the years to serve the needs of the scientific instrument community. We have a full CNC machine shop to do custom machining. We can do TIG vacuum welding and leak checking. If you have a need for any custom manufacture or repair of your mass spectrometer components, give us a call.

Our manufacturing and machining division (scientificmachining.com) specializes in parts for the mass spec, scientific, and medical fields. Our facilities contain a wide variety of state-of-the art computer controlled machining equipment to manufacture complex parts. We have a long history of providing machined components and manufacturing for the scientific and medical industries where precision machining, tight tolerances, fine finishes and cleanliness of finished parts are important. We specialize in small to medium volume production runs including prototype development. We seek to develop strategic partnerships with OEM's.
![]() Yttria coated filament at start |
![]() Yttria coated filament after 16,000 cycles |
New Pumps Added to the List of LOW COST S.I.S. Rotary Vane
Vacuum Pumps - Save 35 - 50% off the price of comparable vacuum pumps.
Adixen (Alcatel) ACP Series Compact Dry Roughing Pumps - a frictionless pumping module, optimized for operation without internal lubricant.
- Direct Replacement for the Shimadzu QP5000 Filament.
PCI Analytics Products - product solutions for all Analytical Instrumentation
SilTite FingerTite, the next generation GC capillary ferrule system without the use of any tools.
(25% discount until Oct 31)
Direct Replacement for the Heated Capillary in the Thermo-Fisher Scientific TSQ & LCQ Mass Spectrometers now available
- Ideal for use in analytical instrumentation
- Will improve your laboratory workflow and reporting confidence in many ways
DigiVac Bench Top Vacuum Gauges
- Vacuum instrumentation with everything you need to go to work
Imtakt HPLC Columns
-offer a wide variety of unique stationary phases in their HPLC
columns
Programmable syringe pumps for controlled flow. Model NE-300 priced at only $275.00
NEW: Wiley 9th Edition - 660,000-850,000
spectra (a 65% increase).
NEW: Agilent 5973/75 Replacement Source
Heater and Temperature Sensor
NEW: SIS Direct Replacement
Filament for the Amatek/Dycor RGA Leak Detectors and Quadrupoles
(p/n 95381VE), which tests have shown increase service life.
NEW: SIS
Replacement Filter Elements For Edwards Oil Mist Eliminators -
Save up to 25% off the price of comparable Edwards replacement
elements.
Identify mass spectra via library
search with the fully-evaluated, most widely used mass spectral
reference library, compiled by the National Institute of Standards
and Technology (NIST).
View and capture images or video at
20x/400x power on a PC computer via attached USB cable.