ASTM G220 - 20 - Standard Practice for Replacing Saturated Calomel Reference Electrode (SCE) for Measuring Electrode Potentials

ASTM G220 - 20

Standard Practice for Replacing Saturated Calomel Reference Electrode (SCE) for Measuring Electrode Potentials

Status : Current   Published : November 2020

Format
PDF

Format
HARDCOPY



1.1?This practice provides the steps necessary to prepare revisions to standards that specify the saturated calomel reference electrode (SCE) for measuring or controlling electrode potentials.

1.2?The SCE contains mercury and, as a result, it may not be available in locations where mercury has been banned. This practice covers the selection and use of an alternative reference electrode.

1.3?In test methods where the SCE is specified, it will be necessary to develop a new precision statement using the alternative reference electrode.

1.4?This practice will not apply to electrometric pH determinations where the SCE has been used. (Electrometric pH measurement is an analytical method that is covered elsewhere.)

1.5?The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6? Warning—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.

1.7? 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.8? This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.




Standard NumberASTM G220 - 20
TitleStandard Practice for Replacing Saturated Calomel Reference Electrode (SCE) for Measuring Electrode Potentials
StatusCurrent
Publication Date01 November 2020
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Ag/AgCl (sat KCl), calomel electrode, liquid junction, mercurous ion, reference electrode, saturated calomel electrode, SCE, silver chloride, silver/silver chloride electrode
ICS77.060
PublisherASTM
FormatA4
DeliveryYes
Pages3
File Size70 KB
Price£37.00


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