ISO 16967:2015描述了分别测定Al，Ca，Fe，Mg，P，K，Si，Na，Ti等灰分固体生物燃料的主要成分的方法。其他元素如钡（Ba）和锰（Mn）的测定也可以用ISO 16967:2015中描述的方法进行。 ISO 16967:2015包括两部分:A部分描述了对燃料的直接测定，该方法也适用于硫和次要元素，B部分给出了一种在550°C灰中测定的方法

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.