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    ASTM D1193-99e1

    Standard Specification for Reagent Water
    • 발행일 : 1999-02-10
    • 발행기관 : ASTM
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분야 11.01 : 물 (Ⅰ)
적용범위

1.1 This specification covers requirements for water suitable for use in methods of chemical analysis and physical testing. Four grades are specified:

Type IType IIType IIIType IV
Electrical conductivity, max, µS/cm at 298 K (25oC)0.0561.00.255.0
Electrical resistivity, min, Mcm at 298 K (25oC)181.0 4.00.2
pH at 298 K (25oC)A AA 5.0 to 8.0
Total organic carbon (TOC), max, µg/L5050200no limit
Sodium, max, µg/L1510 50
Chlorides, max, µg/L1510 50
Total silica, max, µg/L3 3500no limit
Microbiological contamination-When bacterial levels need to be controlled, reagent grade types should be further classified as follows:
Type A Type BType C
Maximum heterotrophic bacteria count10/1000 mL10/100 mL100/10 mL
Endotoxin, EU/mlB 0.030.25not applicable
AThe measurement of pH in Type I, II, and III reagent waters has been eliminated from this specification because these grades of water do not contain constituents in sufficient quantity to significantly alter the pH.
B EU = Endotoxin Units.

1.2 The method of preparation of the various grades of reagent water determines the limits of impurities and shall be as follows:

1.2.1 Type I grade of reagent water shall be prepared by distillation or other equal process, followed by polishing with a mixed bed of ion exchange materials and a 0.2-µm membrane filter. Feedwater to the final polishing step must have a maximum conductivity of 20 µS/cm at 298K (25oC).

1.2.2 Type II grade of reagent water shall be prepared by distillation using a still designed to produce a distillate having a conductivity of less than 1.0 µS/cm at 298 K (25oC). Ion exchange, distillation, or reverse osmosis and organic adsorption may be required prior to distillation if the purity cannot be attained by single distillation.

Note 1—Because distillation is a process commonly relied upon to produce high purity water, the levels specified for Type II reagent water were selected to represent the minimum quality of water that a distillation process should produce.

1.2.3 Type III grade of reagent water shall be prepared by distillation, ion exchange, continuous electrodeionization reverse osmosis, or a combination thereof, followed by polishing with a 0.45-µm membrane filter.

1.2.4 Type IV grade of reagent water may be prepared by distillation, ion exchange, continuous electrodeionization reverse osmosis, electrodialysis, or a combination thereof.

1.3 The choice of one of the various grades may be designated by the method or by the investigator.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
국제분류(ICS)코드
페이지수 3
Edition 99e1

이력정보

No. 표준번호 표준명 발행일 상태
1 ASTM D1193-24상세보기 Standard Specification for Reagent Water 2024-11-01 표준
2 ASTM D1193-24 REDLINE상세보기 Standard Specification for Reagent Water 2024-11-01 표준
3 ASTM D1193-06(2018)상세보기 Standard Specification for Reagent Water 2018-03-15 구판
4 ASTM D1193-06(2011)상세보기 Standard Specification for Reagent Water 2011-05-01 구판
5 ASTM D1193-06상세보기 Standard Specification for Reagent Water 2006-03-01 구판
6 ASTM D1193-99상세보기 Standard Specification for Reagent Water 1999-02-10 구판
7 ASTM D1193-99e1상세보기 Standard Specification for Reagent Water 1999-02-10 구판
8 ASTM D1193-91상세보기 Standard Specification for Reagent Water 구판
9 ASTM D1193-77e1상세보기 Standard Specification for Reagent Water 구판
10 ASTM D1193-70상세보기 Standard Specification For Reagent Water 구판

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