Petroleum

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The Vapor Pro® is a GO for ASTM Method: D7546-09



ASTM International Committee D02 on Petroleum Products and lubricants has approved a new ASTM method which covers the determination of moisture content 
in new and in-service lubricants and additives by relative humidity sensor. The standard, ASTM D 7546, offers users an alternative to moisture testing 
by Karl Fischer titration, or the less quantitative “crackle test”.  Determination of moisture content in lubricants is important as the presence of 
water, even at low levels, can:


Reduce the efficacy and useable lifetime of lubricant additives, especially at elevated temperatures
Contribute to premature corrosion and wear of bearings
Support undesirable bacterial growth
Reduce the load carrying ability of the lubricant
React with the lubricant and some additives to form undesirable by-products (varnish, sludge, organic and inorganic acids)

The Computrac® Vapor Pro® Fx is currently the only instrument that conforms to the unique specifications of ASTM D 7546. The moisture specific 
sensor in the Vapor Pro® Fx works without the need for solvents or specialty chemicals. It is not affected by organic volatiles, or 
compounds that can bias the moisture determination results from Karl Fischer titration such as mercaptans and hydrogen sulfide. The Computrac®
 Fx can detect moisture at levels as low as 10 ppm in most lubricants.

 

	
No Hazardous Chemicals or Reagents
	
PPM - %
	
Simple to Operate
	
Approved for use with ASTM Method D7546-09:
Standard Test Method for Determination of Moisture in New and In-Service Lubricating
Oils and Additives by Relative Humidity Sensor



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