This part of ISO 14951 specifies limits for the composition of water and test methods for verification of its composition. This part of ISO 14951 is applicable to water of the following types, intended for cooling and servicing of space systems:

• type HP: high purity;
• type P: potable (drinking).

This part of ISO 14951 is applicable to only potable water and high purity demineralized water used in both flight hardware and ground servicing, systems, and equipment. It is not applicable to other types of water that may be provided to a space system. This part of ISO 14951 is applicable to influents only to the extent specified herein.