看來狂大似乎問到"食品用途"的水管！(B-44-4X)

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小弟還是覺得"實驗室用途"的Tygon® Laboratory Tubing比較適合水冷使用，

因為它的特性如下：(尤其是黃色字體部分)

• Outstanding chemical resistance (抗化性佳)
• Lot-to-lot consistency for reproducible results
• Increases productivity in peristaltic pumps -- outlasts other clear tubing 2 to 1 (水流率佳)
• Ideal for condensers, incubators, desiccators, gas lines and drain lines