Is it necessary to use 316 polished water pipes in the ultrapure water part of the cell lab, and is it OK to use UPVC water pipes?

You can use ABS pipe, but not UPVC, but after the pipeline of ultrapure water due to the pipeline precipitation, the resistance value is not up to 18.2 megohm ultrapure water level (UPVC material precipitation rate is higher). But for cell culture, resistivity is not the most important, bacteria and endotoxin indicators are relatively more critical, need to consider a good pipeline disinfection design.

All pipes will precipitate substances to contaminate ultrapure water, with metal pipes being the most serious, even the so-called 316L can not deliver ultrapure water. Materials that precipitate relatively little are PVDF tubing and ABS tubing that meets AS codes. (From the 18.2 megohm pure water delivery pipe overview) The pharmaceutical industry commonly used stainless steel pipe mainly because of the need for regular thermal disinfection, but the delivery is generally not ultrapure water but reverse osmosis water or deionized water. Because the delivery of ultrapure water on the pipeline material requirements are very high, the cost is relatively high (to meet the GMP stainless steel pipeline cost is also very high), so it is recommended that the use of ultrapure water in the case is not necessary not to make ultrapure water pipeline. And the delivery of reverse osmosis water and deionized water piping is relatively inexpensive, you can consider doing the delivery of reverse osmosis water / deionized water piping, in the application of ultrapure water at the end of the installation of reverse osmosis water / deionized water as a source of ultrapure water equipment to solve the application of ultrapure water.