Scientific Instrument Services, Inc. Supplies and Services for Mass Spectrometers, Gas Chromatographs, and Liquid Chromatographs.

INVOIL® 704 Diffusion Pump Fluid

Invoil 704
  • Superior Vapor Pressure Capabilities
  • Resistant to Oxidation
  • Thermal Stability
  • Quick Pumpdown Cycles
  • Identical to Dow Corning 704

Invoil 704 is a single component silicone diffusion pump fluid for high vacuums 10-6 to 10-8 torr range. This diffusion pump fluids' low vapor pressure and thermal stability make it popular in many systems such as mass spectrometers and electron microscopes. It performs well in most applications and offers quick pumpdown, even after exposure to air under operating conditions.

Other Diffusion Pump Oils:

Specifications 

Vapor Pressure @ 25 deg C    2 x 10-8 torr
Boiling Point @.50 torr:     220 deg.C (428 deg.F)
Viscosity @ 40 deg.C:        24.2 cst (115 SUS)
Viscosity @ 100 deg.C:       6.2 cst (46.5 SUS)
Pour Point:                  <-9 deg.C (<16 deg.F)
Flash Point:                 221 deg.C (430 deg.F)
Fire Point:                  None
Density:                     1.07 gm/cc
Invoil 704, UOM=Bottle
Part No. Description est
wt.		 Quantity
In Stock		 Price Quantity
to order
IN704 500cc bottle 1 2$128.00
IN7041 1 gal. Bottle 5 0(#)$625.00
(#) Standard lead-time for out-of-stock items is approximately two weeks.
shopping cart Ordering information. International (non-US) prices available through your local dealer.
SIS Catalog Cross Reference
Page #Part Numbers
B20 - Thermo* Mass Spec Accessories IN704
B8 - Agilent 5970 MSDĀ™ Accessories by S.I.S. IN704
F15 - Diffusion Pump Fluids IN704, IN7041
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