ASTM D1193-99e1

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An American National Standard
e1
Designation: D 1193 – 99 Federal Test Method
Standard No. 7916
Standard Specification for
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Reagent Water
This standard is issued under the fixed designation D 1193; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1
e NOTE—An editorial change was made in 1.1 in October 2001.
NOTE 1—Because distillation is a process commonly relied upon to
1. Scope
produce high purity water, the levels specified for Type II reagent water
1.1 Thisspecificationcoversrequirementsforwatersuitable
were selected to represent the minimum quality of water that a distillation
for use in methods of chemical analysis and physical testing.
process should produce.
Four grades are specified:
1.2.3 Type III grade of reagent water shall be prepared by
Type I Type II Type III Type IV
distillation, ion exchange, continuous electrodeionization re-
Electrical conductivity, 0.056 1.0 0.25 5.0
max, µS/cm at 298 K verse osmosis, or a combination thereof, followed by polishing
(25°C)
with a 0.45-µm membrane filter.
Electrical resistivity, min, 18 1.0 4.0 0.2
1.2.4 Type IV grade of reagent water may be prepared by
MV·cm at 298 K (25°C)
AA A
pH at 298 K (25°C) 5.0to8.0 distillation, ion exchange, continuous electrodeionization re-
Total organic carbon 50 50 200 no limit
verse osmosis, electrodialysis, or a combination thereof.
(TOC), max, µg/L
1.3 The choice of one of the various grades may be
Sodium, max, µg/L 1 5 10 50
Chlorides, max, µg/L 1 5 10 50 designated by the method or by the investigator.
Total silica, max, µg/L 3 3 500 no limit
1.4 This standard does not purport to address all of the
Microbiological contamination—When bacterial levels need to be controlled,
safety concerns, if any, associated with its use. It is the
reagent grade types should be further classified as follows:
Type A Type B Type C
responsibility of the user of this standard to establish appro-
Maximum heterotrophic 10/1000 mL 10/100 mL 100/10 mL
priate safety and health practices and determine the applica-
bacteria count
B
bility of regulatory limitations prior to use.
Endotoxin, EU/ml <0.03 0.25 not appli-
cable
A 2. Referenced Documents
The 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
2.1 ASTM Standards:
constituents in sufficient quantity to significantly alter the pH.
B D 1125 Test Methods for Electrical Conductivity and Re-
EU = Endotoxin Units.
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sistivity of Water
1.2 The method of preparation of the various grades of
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D 1129 Terminology Relating to Water
reagent water determines the limits of impurities and shall be
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D 1293 Test Methods for pH of Water
as follows:
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D 4453 Practice for Handling of Ultra-PureWater Samples
1.2.1 Type I grade of reagent water shall be prepared by
D 4517 Test Method for Low-Level Total Silica in High-
distillation or other equal process, followed by polishing with
Purity Water by Flameless Atomic Absorption Spectros-
amixedbedofionexchangematerialsanda0.2-µmmembrane
,
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copy
filter. Feedwater to the final polishing step must have a
D 4779 Test Method for Total, Organic, and Inorganic
maximum conductivity of 20 µS/cm at 298K (25°C).
Carbon in High Purity Water by Ultraviolet (UV) or
1.2.2 Type II grade of reagent water shall be prepared by
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Persulfate Oxidation, or Both, and Infrared Detection
distillation using a still designed to produce a distillate having
D 5391 Test Method for Electrical Conductivity and Resis-
a conductivity of less than 1.0 µS/cm at 298 K (25°C). Ion
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tivity of a Flowing High Purity Water Sample
exchange, distillation, or reverse osmosis and organic adsorp-
D 5542 Test Method for TraceAnions in High Purity Water
tion may be required prior to distillation if the purity cannot be
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by Ion Chromatography
attained by single distillation.
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This specification is under the jurisdiction ofASTM Committee D-19 onWater
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Annual Book of ASTM Standards, Vol 11.01.
and is the responsibility of Subcommittee D19.02 on General Specifications,
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DeterminationofTraceSilicainIndustrialProcessWatersbyFlamelessAtomic
Technical Resources, and Statistical Methods.
AbsorptionSpectrometry,JudithRawaandEarlHenn,AnalyticalChemistry,Vol51,
Current edition approved Feb. 10, 1999. Published March 1999. Originally issued
No 3, March 1979.
as D 1193 – 51 T. Last previous edition D 1193 – 91.
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Annual Book of ASTM Standards, Vol 11.02.
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