ASTM D1193-06 (R2011) pdf free download.Standard Specification for Reagent Water.
1.1 This specification describes the required characteristics of waters deemed suitable for use with the Standards under the jurisdiction of ASTM.
1.2 The alphanumeric characters ascribed to water types and grades are specified in the ASTM Format and Style Manual. These have been assigned in order of historical precedence and should not be taken as an indication of a progression in water purity.
1.3 Four types of waters have been specified, with three additional grades that can he applied to the four types. The grade specifications specifically address contaminants of microbiological origin.
1.4 All applicable ASTM Standards are expected to reference one or more of these reagent water types where reagent water is needed as a component of an analytical measurement process. Where a different water type or grade is needed for an ASTM Standard, it may be added to this Specification through the ASTM Standard revision process.
1.5 Although these water types and associated grades have been defIned specifically for use with ASTM Standards, they may be appropriate for other applications. It is the responsibility of the users of this standard to ensure that the selected water types or grades are suitable for their intended use. Historically, reagent water Types 1, 11, 111, and IV have been linked to specific processes for their production. Starting with this revision, these types of waters may be produced with alternate technologies as long as the appropriate constituent specifications are met and that water so produced has been shown to be appropriate for the application where the use of such Water 15 specified. Therefore, the selection of an alternate technology in place of the technology specified in Table I should he made taking into account the potential impact of other contaminants such as microorganism and pyrogens. Such contaminants were not necessarily considered by the performance characteristics of the technology previously specified.
3. Terminology
3. 1 Definitions— For definitions used in this specification refer to Terminology D1129.
3.2.1 reagent water—water that is used specifically as a component of an analytical measurement process and meets or exceeds the specifications for these waters.
3.2.2 elect rodeion 1w/ion—a process that removes ionized and ionizable species from liquids using electrically active media and using an electrical potential to influence ion transport, where the ionic transport properties of the active media are a primary sizing parameter. Elcctrodcionization devices typically comprise semi-permeable ion-exchange membranes and permanently charged ion-exchange media (see Test Method D6529).
3.2.3 reverse os,nosis (RO)—the separation process where one component of a solution is removed from another component by flowing the feed stream under pressure across a semipermeable membrane. RO removes ions based on electrochemical forces, colloids, and organics down to 150 molecular weight. May also be called hyperfiltration (see Terminology
D6161).ASTM D1193 pdf download.