The two main objectives of theses products are firstly to prevent circuits flattening (thus reduction of thermal transfer (7, 8) or resistance to liquid flow (9, 10)) and secondly to prevent microbial corrosion.

• 如果要在系统中使用这种化学品，首先要能防止循环系统的破坏，从而导致热传递速率降低（7，8）或者流速变慢（9，10），其次要能够防止生物腐蚀。