本标准包括使用一段染色管测定低压液化石油气中乙硫醇的浓度。虽然染色管中可能会显示其他硫醇和硫物种，但重要的是要记住，这些管经过校准，旨在用于确定液化石油气中乙基硫醇的浓度。本修订版更新了程序中使用的一些材料，根据今天的最佳实践，这些材料在我们将用于收集样本或将样本运输到染色管（即胶橡胶管等）方面会被发现过时。

This standard covers the determination of the concentration of Ethyl-Mercaptan in low pressure LP Gas using a length of stain tube. While other mercaptans and sulfur species may be indicated in a stain tube it is important to remember that the tubes are calibrated for and intended to be used to determine the concentrations specifically of Ethyl Mercaptan in LP gas.This revision updates some materials used in the procedures which by today's best practices would be found obsolete in terms of what we would use to collect or transport a sample to the stain tube, i.e. gum rubber tubing, etc.