“B”型耦合剂,是一种水包油型乳浊液,在“B”型超声中作为隔气防护剂,是声波传导的良好介质.原处方:液体石腊 500ml;西黄芪胶(或阿拉伯胶)12g;吐温80 20ml;苯甲酸钠 1.0g;95%乙醇 200ml;蒸馏水加至 1000ml.原制法:将西黄芪胶放入干乳钵中研磨(按一定方向进行)。加入95%乙醇,充分混合后再加入吐温80研匀,随将苯甲酸钠溶于50ml 的蒸馏水加于乳钵中研磨均 “B” type coupling agent, an oil-in-water emulsion, is a good medium for sonic conduction as a gas barrier agent in “B” ultrasound Original prescription: liquid paraffin 500ml; Or acacia gum) Tween 80 20ml; Sodium benzoate 1.0g; 95% ethanol 200ml; Distilled water added to 1000ml. The original method: the West tragacanth into the dry mortar grinding (according to a certain direction). 95% ethanol was added, mixed thoroughly and then added Tween 80 uniform, with sodium benzoate dissolved in 50ml of distilled water were added to the mortar grinding