ISO 15181-5:2008规定了根据ISO 15181-1给出的程序，确定从防污涂料释放到人造海水中的甲苯基氟烷和二氯荧光体的量的装置和分析方法。 甲苯基流质和二氯氟烷在海洋环境中不稳定，分解形成二甲基亚磺酰胺（DMST）和二甲基苯基磺酰胺（DMSA）。 ISO 15181-5:2008规定了将释放物质转化为这些降解产物的方法，定量处理的人造海水样品中的浓度，并在指定的实验室条件下对甲苯基氟烷和二氯甲苯胺的释放速率进行最终计算。 ISO 15181-5:2008旨在允许通过分析生成的人造海水提取物的单独子样品，同时测定可以通过给定的防污涂料（例如铜）释放的甲苯基氟，二氯联苯和其他杀生物剂符合ISO 15181-1。 当与ISO 15181-1结合使用时，通过该方法量化释放速率的实际限制为每天每平方厘米1,3微克至每微克每平方厘米500微克。定量释放率低于

ISO 15181-5:2008 specifies the apparatus and analytical method for determining the amount of tolylfluanid and dichlofluanid that has been released from an antifouling paint into artificial seawater in accordance with the procedure given in ISO 15181-1. Tolylfluanid and dichlofluanid are unstable in the marine environment and degrade to form dimethyltolylsulfamide (DMST) and dimethylphenylsulfamide (DMSA) respectively. ISO 15181-5:2008 specifies a method for converting the released species into these degradation products, quantifying their concentration in the treated artificial seawater samples, and gives the final calculation for the release rate of tolylfluanid and dichlofluanid under the specified laboratory conditions. ISO 15181-5:2008 is designed to allow the concurrent determination of tolylfluanid, dichlofluanid and other biocides that can be released by a given antifouling paint (for example, copper) through the analysis of separate sub-samples of an artificial seawater extract generated in accordance with ISO 15181-1. When used in conjunction with ISO 15181-1, the practical limits for quantifying release rates by this method are from 1,3 micrograms per square centimetre per day to 500 micrograms per square centimetre per day. The quantitation of release rates lower than this range will require the use of an analytical method with a lower limit of quantitation for tolylfluanid, dichlofluanid, or both (as appropriate) in artificial seawater