| Are the analyzers ASTM approved? For biodiesel blend analysis, there is currently a method with a work group number in process ASTM D6751 biodiesel production requires a number of different technologies for the various measurements The InfraSpec VFA-IR Spectrometer is ideal for biodiesel production measurements that will help ensure that the biodiesel will pass the final D6751 laboratory test An ASTM Method for FAME (biodiesel) in diesel for the InfraSpec VFA-IR Spectrometer is currently up for ballot and should pass in 2011.
Back to top How do the Wilks Analyzers compare to other methods? This chart displays results of a test conducted by an independent laboratory comparing the InfraCal Biodiesel Blend Analyzer and the InfraSpec VFA-IR Spectrometer to the EN 14078 and ASTM D7371 FAME/biodiesel blend methods. 
This chart contains the results of the comparison of the InfraSpec VFA-IR Spectrometer to the ASTM D7371 Method for percent FAME in diesel performed by several independent laboratories. 
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Does Wilks rent analyzers? Yes, we do have a rental program available for customers in the US or Canada. Please send an inquiry to
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if you are interested in obtaining additional information on renting an InfraCal Analyzer.
Back to top What is the warranty on the InfraCal & InfraSpec Analyzers? All of our InfraCal & InfraSpec Analyzers come with a one year factory warranty. Please contact Wilks Enterprise for a copy of the warranty if you wish to obtain it prior to purchase. Extended warranties are available for purchase for an additional one or two years. The extended warranties can only be purchased at the time the analyzer is purchased.
Back to top Does Wilks sell used equipment? No, we do not sell used equipment. Our analyzers are generally in use for more than 7 years and it would be more costly to refurbish an old analyzer than to build a new one.
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Frequent Questions
