Wilks Enterprise has published an application data sheet describing a simple method for measuring biofuel blend ratios. With the development of biofuel programmes, there is a growing need for easy-to-use methods to ensure the specified blend ratios. The InfraCal Blend Infrared Analyser provides a direct readout in either % biodiesel or % ethanol, giving the user the capability to measure the blend ratio on-site in less than one minute. Biodiesel has a characteristic infrared absorption band at 1754 cm^–1 and ethanol at 1045 cm^–1. As biodiesel or ethanol percentage increases, the infrared absorbance increases which directly correlates to percent concentration. The analyser can easily measure 0–100% biodiesel and 0–98% ethanol.

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