Analytical Instrumentation

  • New ASTM Biodiesel Blend Measuring Method D7861 Validates Use of Portable Analysers

New ASTM Biodiesel Blend Measuring Method D7861 Validates Use of Portable Analysers

Apr 02 2015 Read 2840 Times

The recently-published ASTM method D7861 for measuring biodiesel blend ratios enables users to take full advantage of the speed, convenience and durability provided by portable infrared analysers from Wilks (USA) - a Spectro Scientific Company.

Traditional ASTM D7371 and EN 14078 methods for measuring biodiesel blends require the use of Fourier Transform Infrared (FTIR) spectrometers, equipment that is expensive and requires a level of technical knowledge to operate accurately. The new ASTM method D7861 certifies the use of portable filter-based infrared analysers, such as the Wilks InfraSpec VFA-IR Spectrometer, that are rugged, compact and much better suited for use by on-site personnel in the environment where fuels are blended. The analysers provide a fast, easy-to-use and inexpensive infrared method alternative for measuring biodiesel FAME (Fatty Acid Methyl Esters) blend percentages.

The InfraSpec VFA-IR Spectrometer is a spectral range analyser that employs a linear variable filter and a detector array covering the wavelength range of 5.4-10.8 μm (1850-925 cm-1), making it compliant with the instrument requirements of ASTM D7861. The spectrometer covers a spectral range that enables it to not only measure biodiesel in diesel, but also ethanol in gasoline and water in ethanol. The compact, portable instrument has a simplified PC interface that allows non-technical personnel to make measurements on-site at the blending terminal, as well as at manufacturing facilities or laboratories where an ASTM method is required. The analyser can measure the blend ratio in less than a minute and reads out directly in percent of biodiesel. Measurement range is 0 to 100 percent, with an accuracy of +/- 0.20 percent.

Wilks also offers the rugged, compact, fixed-filter InfraCal 2 ATR-B Biodiesel Blend Analyser. Due to its single wavelength analysis, it is does not comply with D7861; results, however, are comparable with D7371, EN 14078 and the new D7861 method. The InfraCal 2 ATR-B analyser is currently used worldwide by fuel blenders, distributors and regulators. 

Reader comments

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Post a Comment





Digital Edition

Petro Industry News July 2020

July 2020

In This Edition Safety - BM 25 & BM 25 Wireless: 10 years of improved safety - Discover the enhanced PS200 Fuel For Thought - FCI announces Adam Schleyhahn as Director of Sales - New...

View all digital editions

Events

FlowExpo 2020 - NEW DATES

Aug 08 2020 Guangzhou, China

securika

Aug 11 2020 Moscow, Russia

SIAF Guangzhou - NEW DATES

Aug 11 2020 Guanghzou, China

National Safety Show

Aug 12 2020 Auckland, New Zealand

IE Expo China 2020 - NEW DATES

Aug 13 2020 Shanghai, China

View all events