water tubing

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This is a complement of my request of information:

We have a pure water system comprising:
1) Pretreatment by a 0.2 micron filter plus an Econo-pure
RO system. This feeds a Polypropilene tank.
2) The water is continuosly circulated through this tank,
a Teflon+PP pump, ion-exchange mixed resin cartridges, and
the main water line, made of polypropilene tubing.
3) At each point of use there is a derivation feeding a
Spiratrex point-of-use filter.

We are installing a new point of use.
I would like to know if someone can help me with the following information
Can the derivation be made with Silicone tubing ?
Is any kind of silicone tubing acceptable for electronic grade water ?
  
Is any other elastomer acceptable for electronic grade
water tubing ?

The reason is that we need tubing with more flexibility.
This is why we asked about slicone tubing or other elastomer.

thanks

Luiz Antonio

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