本文件规定了使用廉价且简单的技术测定液体（液体）肥料盐析温度（SOT）的试验程序，也称为结晶温度（CT）。 这种方法可能不适用于二元和三元肥料，尤其是关于最后消失的晶体（LCTD）。程序中讨论了其中一些例外情况（第8条）。

This document specifies the test procedure for the determination of the salt out temperature (SOT), also known as the crystallization temperature (CT) of liquid (fluid) fertilizers, using an inexpensive and simple technique. This method might not be applicable to the binary and ternary fertilizers, especially with regards to the last crystal to disappear (LCTD). Some of these exceptions are discussed in the procedure (Clause 8).