E Materials of construction and
compatible solvents
Warning: To avoid personal contamination with biologically hazardous, toxic, or corrosive
materials, you must address any safety issues raised by the contents of this Appendix. Doing so
confirms the integrity of the source exhaust system.
E.1 Preventing contamination
For information on preventing contamination, refer to Controlling Contamination in LC/MS
Systems (715001307). You can find this document on www.waters.com by clicking Support >
Support Documents and Downloads.
E.2 Items exposed to solvents
The items that appear in the following tables can be exposed to solvent. You must evaluate the
safety issues if the solvents used in your application differ from the solvents typically used with
these items. See Solvents used to prepare mobile phases (Page 106) for details about the most
common ingredients used to prepare mobile phases.
Table E–1: Fluidics items:
Item Material
Leak sensor Various
Syringe pump HTZP (ceramic), Viton, UHMWPE, and PEEK
Select valve RPC-10 (a type of PEEK) and 316 stainless
steel
Table E–2: Pumping block and analyzer items:
Item Material
Pumping block rear gasket FEPM
Pumping block front gasket FEPM
August 20, 2021, 715005003 Ver. 04 (Previously released as Revision C)
Page 105
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