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Is the analyzer ASTM approved?
The InfraCal Biodiesel Blend Analyzer closely follows the ASTM method, however, because it is a filter based mid-infrared analyzer and not an FT-IR, it is currently not an ASTM approved analyzer.
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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.
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Can an InfraCal Biodiesel Blend Analyzer be used for analyzing ethanol in petrol/gasoline? No. The InfraCal Biodiesel Blend Analyzer can not be used for analyzing ethanol in gasoline. The filters in the analyzer are preset for biodiesel analysis. The InfraSpec VFA-IR Spectrometer, Model ES can be used for measuring both ethanol in petrol/gasoline and biodiesel in diesel.
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How long does the source last?
The source in an InfraCal Biodiesel Blend Analyzer is a tungsten source with a lifespan of generally 5 or more years. However, the source falls under the warranty coverage on the InfraCal Analyzers, which is a one year factory warranty.
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What is the warranty on the InfraCal Biodiesel Blend Analyzer?
All of our InfraCal 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.
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My InfraLog Printer will not work.
1. Check the back of the InfraCal Analyzers and be sure the "Cal Lock" switch is in the "I" position.
2. Check to see that the printer light is on.
3. The printer comes with a manufacture warranty. For additional trouble shooting questions contact the Manufacturer: Weigh-Tronix, Fairmont, MN Tel: 507-238-4461, e-mail
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When I press run nothing happens.
If you press and hold the run button rather than press and release, it will go into the timer-setting mode. To reset the timer to the appropriate evaporation time, use the up and down arrows on the buttons. Once the timer is set, press the "CAL" button and the display will return to "idle". Please refer to section 3.4.2 in the Users Guide for a detailed description.
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Where can I obtain an additional manual for the InfraCal Biodiesel Blend Analyzer?
All of our manuals are available on our website. The User's Guide for the InfraCal Biodiesel Blend Analyzer can be obtained by pasting this link into your browser bar http://wilksir.com/pdf/InfraCal_Biodiesel_Analyzer_Manual_Rev_1.6.2.pdf
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Will the power supply work in any country?
The power supply for the InfraCal Biodiesel Blend Analyzer is a Universal Switching Power Supply, the input is 100 - 240v, 50/60 Hz. However, you may need to purchase an adapter plug locally.
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Can I use the External 12 v Battery Pack outside of North America?
The battery pack is supplied with a US AC adapter that requires a 115v 60 Hz input to recharge the battery. Customers using the battery pack outside the US would need to supply their own converter with the appropriate outlet to convert their country's power to the 115v 60 Hz.
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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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