ASTM D1193-91 PDF

ASTM D Standard Specification for Reagent Water. Be notified when this Standard is updated or amended – Add to StandardsWatch. General Product . Designation: D – 99 e1 . 1 This specification is under the jurisdiction of ASTM Committee D on as D – 51 T. Last previous edition D – 91 . ASTM D – 99e1 Standard Specification for Reagent Water. View on Information Provider website {{ linkText }}. Abbreviation. ASTM D Amendment.

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Nails, Spikes, and Staples. A number in parentheses indicates the year of last reapproval. This periodicity can be de? This requires that the calibration of the various measuring instruments be veri? Also, different types of contaminants affect these methods and processes differently. K Heterotrophic bacteria count. Note-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.

Particular attention should be taken regarding the location and sequence of particular puri? The validation process can be divided into 4 major quali? It should be noted also 1d193-91 the method may or may not remove non-ionized dissolved gases.

What Type of Laboratory Water Do I Need?

Electrodeionization devices typically comprise semi-permeable ion-exchange membranes and permanently charged ion-exchange media see Test Method D Type II reagent water may be produced with alternate technologies as long as the appropriate constituent speci?

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It is aastm to satisfy the requirements for normal laboratory procedures, but does not necessarily apply to the large-scale production of pure water or for speci? With that being said, how is water quality measured and how do researchers determine the purity of water necessary for their process? Therefore, the selection of an alternate technology in place of the technology speci? Type 2 reagent grade water is defined by ASTM as water that has greater than 1 megohm-cm resistivity.

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The design of the installation should also be de? Remember me for one month. TOC is asttm measured in parts per billion ppbwith Type 1 water systems having less than 10 ppb.

Current edition approved March 1, The techniques presented can help the investigator increase the accuracy of analyses performed. Pharmacopeia by The U. Ion exchange, distillation, or reverse osmosis and organic adsorption may be required prior to distillation if the purity cannot be attained by single distillation.

Enter your personal account email address to request a password reset: D Standard Specification for Reagent Water 1. Published in the U.

The handling of blanks associated with the analysis of ultra-pure water samples is also covered by this practice. Depending on the water type required and the applications performed, container material and cleaning procedures must be chosen appropriately. Feed water to the? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. The resistance of water can be easily and inexpensively monitored in a laboratory.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM D 修改版 Standard Specification for Reagent Water_百度文库

It should be recognized that the mere fact that the water is stored will likely reduce its purity despite attempts to prevent contamination. Minute traces of salts or biological contaminants can result in unfortunate consequences when culturing cells or performing analytical measurements of biological macromolecules.

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Storage should be sized to ensure a good turnover of water. Four grades are specified: Use and Application 5. The periodicity of such draw-offs and sanitization should be de? Type III reagent water may be produced with alternate technologies as long as the appropriate constituent speci?

Print 1 2 3 4 5 page sstarting from page current page. A superscript epsilon e indicates an editorial change sinc. Enter your account email address to request a password reset: Endotoxins are lipopolysaccharide molecules released when bacterial cells die. Starting with this revision, these types of waters may be produced with alternate technologies as long as the appropriate constituent speci? While Type 3 water is considered usable for autoclaving, glassware rinsing or washing and water baths, Type 1 and Type 2 water are indicated for most laboratory procedures.

Learn more about water purification systems offered at Laboratory-Equipment. All steps should be documented. NOTE1—Because distillation is a process commonly relied upon to produce high purity water, the levels speci? Originally approved in Follow-up of trends in the quality and performance parameters should be performed regularly to check any variations in performance of the water puri?

These have been assigned in order of historical precedence and should not be taken as an indication of a progression in water purity. The amount of organic components released differs depending on the type and brand of the membrane? 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.