It is intended to provide a method whereby residual detergent (surfactant) can be conveniently and accurately detected in the step of washing or rinsing dishes or clothes, and a test device usable in examining the rinsed conditions. Namely, a method characterized by comprising bringing a test substance with a composition (test agent) comprising an oxalic acid ester, a fluorescent substance, hydrogen peroxide and a strong acid and thus easily detecting the residual detergent sticking to the surface of the test subject from the chemiluminescence thus caused; and a test device which is most suitable for storing the test agent as described above.
本发明的目的是提供一种在清洗或漂洗餐具或衣物的步骤中可以方便而准确地检测残留洗涤剂(表面活性剂)的方法,以及一种可用于检测漂洗条件的检测装置。也就是说,这种方法的特点是:将一种测试物质与一种由
草酸酯、荧光物质、
过氧化氢和强酸组成的组合物(测试剂)放在一起,这样就可以很容易地从由此产生的
化学发光中检测出粘附在测试对象表面的残留洗涤剂;以及一种最适合储存上述测试剂的测试装置。