《化学教学》1997年第12期刊出《贴近生活的两个小实验》一文，以下简称《小实验》．本人对其中的一些问题有不同浅见．《小实验》一是用猪肠衣做的《咸蛋变淡》的渗析实验，将咸蛋通过猪肠衣渗析“3至4小时后，尝一尝杯里的清水，有明显的咸味，而肠衣里的蛋清变淡了许多”． “Chemistry Teaching” published in the 12th issue of 1997, “Two Small Experiments Close to Life”, hereinafter referred to as “Small Experiment”. I have different views on some of these issues. In the “Little Experiment”, a dialysis experiment using “salty eggs” made with pig casings was performed, and the salted eggs were dialyzed through the pig casings. “3 to 4 hours later, try the fresh water in the cup and have obvious saltiness. The egg white in casings faded a lot."