ISO 16967:2015描述了固体生物燃料灰烬中主要元素铝、钙、铁、镁、磷、钾、硅、钠、钛的测定方法。也可以使用ISO 16967:2015中描述的方法测定钡（Ba）和锰（Mn）等其他元素。 ISO 16967:2015包括两部分:A部分描述了燃料的直接测定，该方法也适用于硫和微量元素，B部分给出了制备的550°C灰分的测定方法。

ISO 16967:2015 describes methods for the determination of major elements of solid biofuels respectively of their ashes, which are Al, Ca, Fe, Mg, P, K, Si, Na, Ti. The determination of other elements such as barium (Ba) and manganese (Mn) is also possible with the methods described in ISO 16967:2015. ISO 16967:2015 includes two parts: Part A describes the direct determination on the fuel, this method is also applicable for sulfur and minor elements, Part B gives a method of determination on a prepared 550 °C ash.