iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM D3739-06(2010)

(Practice)

Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis (Withdrawn 2019)

Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis (Withdrawn 2019)

SIGNIFICANCE AND USE
In the design and operation of reverse osmosis installations, it is important to predict the calcium carbonate scaling properties of the concentrate stream. Because of the increase in total dissolved solids in the concentrate stream and the difference in passages for calcium ion, bicarbonate ion, and free CO2, the calcium carbonate scaling properties of the concentrate stream will generally be quite different from those of the feed solution. This practice permits the calculation of the Langelier Saturation Index for the concentrate stream from the feed water analyses and the reverse osmosis operating parameters.
A positive Langelier Saturation Index indicates the tendency to form a calcium carbonate scale, which can be damaging to reverse osmosis performance. This practice gives various procedures for the adjustment of the Langelier saturation index.
The tendency to form CaCo3 scale can be suppressed by the addition of antiscalents or crystal modifiers. Suppliers of antisealents and crystal modifiers can provide information on the scale inhibition peformance of these types of chemical. Their use may be appropriate for reducing scale formation in RO systems. The RO system supplier should be consulted prior to the use of antisealents and crystal modifiers to ensure they will not have a negative impact on the RO system.
SCOPE
1.1 This practice covers the calculation and adjustment of the Langelier saturation index for the concentrate stream of a reverse osmosis device. This index is used to determine the need for calcium carbonate scale control in the operation and design of reverse osmosis installations. This practice is applicable for concentrate streams containing xx 10 to 10 000 mg/L of total dissolved solids. For concentrate containing over 10 000 mg/L see Practice D4582.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
WITHDRAWN RATIONALE
This practice covers the calculation and adjustment of the Langelier saturation index for the concentrate stream of a reverse osmosis device.
Formerly under the jurisdiction of Committee D19 on Water, this practice was withdrawn in January 2019 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

Status
Historical
Publication Date
30-Apr-2010
Withdrawal Date
13-Jan-2019
ICS
07.030 - Physics. Chemistry
Technical Committee
D19 - Water
Drafting Committee
D19.08 - Membranes and Ion Exchange Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D3739-06 - Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
Effective Date
01-May-2010
Replaced By
ASTM D3739-19 - Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
Effective Date
01-Jul-2019
Referred By
ASTM D4582-23 - Standard Practice for Calculation and Adjustment of the Stiff and Davis Stability Index for Reverse Osmosis
Effective Date
01-May-2010
Referred By
ASTM D6161-19 - Standard Terminology Used for Microfiltration, Ultrafiltration, Nanofiltration, and Reverse Osmosis Membrane Processes
Effective Date
01-May-2010

Buy Standard

ASTM D3739-06(2010) - Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis (Withdrawn 2019)ASTM D3739-06(2010) - Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis (Withdrawn 2019)
PreviousNext
Standard
ASTM D3739-06(2010) - Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis (Withdrawn 2019)
English language
4 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D3739 − 06 (Reapproved 2010)
Standard Practice for
Calculation and Adjustment of the Langelier Saturation
1
Index for Reverse Osmosis
This standard is issued under the fixed designation D3739; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D4582 Practice for Calculation and Adjustment of the Stiff
and Davis Stability Index for Reverse Osmosis
1.1 This practice covers the calculation and adjustment of
D6161 Terminology Used for Microfiltration, Ultrafiltration,
the Langelier saturation index for the concentrate stream of a
Nanofiltration and Reverse Osmosis Membrane Processes
reverse osmosis device. This index is used to determine the
need for calcium carbonate scale control in the operation and
3. Terminology
design of reverse osmosis installations. This practice is appli-
3.1 Defintions—For definitions of terms used in this
cable for concentrate streams containing xx 10 to 10 000 mg⁄L
practice, refer toTerminology D1129 andTerminology D6161.
of total dissolved solids. For concentrate containing over
3.2 Definitions of Terms Specific to This Standard:
10 000 mg⁄L see Practice D4582.
3.2.1 For descriptions of terms relating to reverse osmosis,
1.2 The values stated in SI units are to be regarded as
refer to Test Methods D4194.
standard. No other units of measurement are included in this
3.2.2 Langelier Saturation Index—an index calculated from
standard.
total dissolved solids, calcium concentration, total alkalinity,
1.3 This standard does not purport to address all of the
pH, and solution temperature that shows the tendency of a
safety concerns, if any, associated with its use. It is the
water solution to precipitate or dissolve calcium carbonate.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 4. Summary of Practice
bility of regulatory limitations prior to use.
4.1 This practice consists of calculating the Langelier Satu-
ration Index for a reverse osmosis concentrate stream from the
2. Referenced Documents
total dissolved solids, calcium ion content, total alkalinity, pH,
2
2.1 ASTM Standards:
and temperature of the feed solution, and the recovery of the
D511 Test Methods for Calcium and Magnesium In Water reverse osmosis system.
D1067 Test Methods for Acidity or Alkalinity of Water
4.2 This practice also presents techniques to lower the
D1129 Terminology Relating to Water
Langelier Saturation Index by decreasing the recovery, by
D1293 Test Methods for pH of Water
decreasing the calcium content of the feedwater, or by chang-
D1888 MethodsOfTestforParticulateandDissolvedMatter
ing the ratio of total alkalinity to free carbon dioxide in the
3
in Water (Withdrawn 1989)
feedwater.
D4194 Test Methods for Operating Characteristics of Re-
verse Osmosis and Nanofiltration Devices 5. Significance and Use
D4195 Guide for Water Analysis for Reverse Osmosis and
5.1 In the design and operation of reverse osmosis
Nanofiltration Application
installations, it is important to predict the calcium carbonate
scaling properties of the concentrate stream. Because of the
increase in total dissolved solids in the concentrate stream and
1
This practice is under the jurisdiction of ASTM Committee D19 on Water and
the difference in passages for calcium ion, bicarbonate ion, and
is the direct responsibility of Subcommittee D19.08 on Membranes and Ion
free CO , the calcium carbonate scaling properties of the
2
Exchange Materials.
concentrate stream will generally be quite different from those
Current edition approved May 1, 2010. Published May 2010. Originally
approved in 1978. Last previous edition approved in 2006 as D3739 – 06. DOI:
ofthefeedsolution.Thispracticepermitsthecalculationofthe
10.1520/D3739-06R10.
Langelier Saturation Index for the concentrate stream from the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
feed water analyses and the reverse osmosis operating param-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on eters.
the ASTM website.
3
5.2 A positive Langelier Saturation Index indicates the
The last approved version of this historical standard is referenced on
www.astm.org. tendency to form a calcium carbonate scale, which can be
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3739 − 06 (2010)
osmosis system. For most reverse osmosis devices SP can be consider
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM D8293-22(Guide)
Standard Guide for Evaluating and Expressing the Uncertainty of Radiochemical Measurements

SIGNIFICANCE AND USE
5.1 This guide is intended to help testing laboratories and the developers of methods and software for those laboratories to apply the concepts of measurement uncertainty to radiochemical analyses.  
5.2 The result of a laboratory measurement never exactly equals the true value of the measurand. The difference between the two is called the error of the measurement. An estimate of the possible magnitude of this error is called the uncertainty of the measurement. While the error is primarily a theoretical concept, since its value is never known, the uncertainty has practical uses. Together, the measured value and its uncertainty allow one to place bounds on the likely true value of the measurand.  
5.3 Reliable measurement-based decision making requires not only measured values but also an indication of their uncertainty. Traditionally, significant figures have been used with varying degrees of success to indicate implicitly the order of magnitude of measurement uncertainties; however, reporting an explicit uncertainty estimate with each result is more reliable and informative, and is considered an industry-standard best practice.
SCOPE
1.1 This guide provides concepts, terminology, symbols, and recommendations for the evaluation and expression of the uncertainty of radiochemical measurements of water and other environmental media by testing laboratories. It applies to measurements of radionuclide activities, including gross activities, regardless of whether they involve chemical preparation of the samples.  
1.2 This guide does not provide a complete tutorial on measurement uncertainty. Interested readers should refer to the documents listed in Section 2 and References for more information. See, for example, GUM, QUAM, Taylor and Kuyatt (1)2, and Chapter 19 of MARLAP (2).  
1.3 The system of units for this guide is not specified. Dimensional quantities in the guide are presented only as illustrations of calculation methods. The examples are not binding on products or test methods treated.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

  • Guide
    40 pages
    English language
    sale 15% off
  • Guide
    40 pages
    English language
    sale 15% off
ASTM
ASTM D7902-20(Terminology)
Standard Terminology for Radiochemical Analyses

SIGNIFICANCE AND USE
3.1 This terminology standard describes terms and definitions used in standards for radiochemical analysis maintained by ASTM Committee D19 on Water. The terminology is also recommended for general use in the radiochemistry community.
SCOPE
1.1 This standard describes terminology commonly used in radiochemistry and radioanalysis.  
1.2 The values stated in SI units are to be regarded as standard. Other units of measurement, including some units that are not accepted for use with the SI, are also defined.  
1.3 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.  
1.4 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
    10 pages
    English language
    sale 15% off
  • Standard
    10 pages
    English language
    sale 15% off
ASTM
ASTM D3739-19(Practice)
Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis

SIGNIFICANCE AND USE
5.1 In the design and operation of RO installations, it is important to predict the calcium carbonate scaling properties of the concentrate stream. Because of the increase in total dissolved solids in the concentrate stream and the difference in passages for calcium ion, bicarbonate ion, and free carbon dioxide, the calcium carbonate scaling properties of the concentrate stream will generally be quite different from those of the feed solution. This practice permits the calculation of the Langelier saturation index for the concentrate stream from the feed water analyses and the RO operating parameters.  
5.2 A positive Langelier saturation index indicates the tendency to form a calcium carbonate scale, which can be damaging to RO performance. This practice gives various procedures for the adjustment of the Langelier saturation index.  
5.3 The tendency to form calcium carbonate scale can be suppressed by the addition of antiscalents or crystal modifiers. Suppliers of antisealents and crystal modifiers can provide information on the scale inhibition peformance of these types of chemical. Their use may be appropriate for reducing scale formation in RO systems. The RO system supplier should be consulted prior to the use of antisealents and crystal modifiers to ensure they will not have a negative impact on the RO system.
SCOPE
1.1 This practice covers the calculation and adjustment of the Langelier saturation index for the concentrate stream of a reverse osmosis (RO) device. This index is used to determine the need for calcium carbonate (CaCo3) scale control in the operation and design of RO installations. This practice is applicable for concentrate streams containing 10 to 10 000 mg/L of total dissolved solids. For concentrate containing over 10 000 mg/L, see Practice D4582.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
1.4 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
    4 pages
    English language
    sale 15% off
ASTM
ASTM D4948-89(2022)(Test Method)
Standard Test Method for Determination of the Upper Layer Separated from a Viscous Liquid

SIGNIFICANCE AND USE
4.1 The United Nations Committee of Experts on the Transport of Dangerous Goods in their recommended regulations place materials having a flash point below 23 °C (73.5 °F) in Packing Group II. However, if viscous substances such as paint and related coatings, adhesives, polishes, etc., meet certain requirements, they can be placed in Group III along with materials having a flash point between 23 °C and 60.5 °C (73.5 °F and 140 °F). One of the requirements is that less than 3 % of clear liquid separates from the bulk of the material when subjected to this test method.  
4.2 At the present time most international regulatory bodies such as the International Civil Aviation Organization (ICAO) and the International Maritime Organization (IMO) use the U.N. Recommendations. It is anticipated that most national transportation regulatory bodies will adopt the U.N. Recommendations as their regulations for control of transportation of hazardous materials. At present the United States permits the transshipment of hazardous materials through the United States to other countries under regulations of the IMO and ICAO.
SCOPE
1.1 This test method covers the determination of the amount of liquid separated as an upper layer in a 24-h period from viscous solutions or dispersions that contain dispersed solids such as paints, enamels, pigmented lacquers, adhesives, polishes, and other similar materials.  
Note 1: The amount of clear liquid that separates during this test is one of the criteria in the United Nations Recommendations on the Transportation of Dangerous Goods2 for the placement of flammable viscous liquids into packing groups related to flash points (See 4.1).  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 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.  
1.4 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
    2 pages
    English language
    sale 15% off
ASTM
ASTM D8293-22(Guide)
Standard Guide for Evaluating and Expressing the Uncertainty of Radiochemical Measurements

SIGNIFICANCE AND USE
5.1 This guide is intended to help testing laboratories and the developers of methods and software for those laboratories to apply the concepts of measurement uncertainty to radiochemical analyses.  
5.2 The result of a laboratory measurement never exactly equals the true value of the measurand. The difference between the two is called the error of the measurement. An estimate of the possible magnitude of this error is called the uncertainty of the measurement. While the error is primarily a theoretical concept, since its value is never known, the uncertainty has practical uses. Together, the measured value and its uncertainty allow one to place bounds on the likely true value of the measurand.  
5.3 Reliable measurement-based decision making requires not only measured values but also an indication of their uncertainty. Traditionally, significant figures have been used with varying degrees of success to indicate implicitly the order of magnitude of measurement uncertainties; however, reporting an explicit uncertainty estimate with each result is more reliable and informative, and is considered an industry-standard best practice.
SCOPE
1.1 This guide provides concepts, terminology, symbols, and recommendations for the evaluation and expression of the uncertainty of radiochemical measurements of water and other environmental media by testing laboratories. It applies to measurements of radionuclide activities, including gross activities, regardless of whether they involve chemical preparation of the samples.  
1.2 This guide does not provide a complete tutorial on measurement uncertainty. Interested readers should refer to the documents listed in Section 2 and References for more information. See, for example, GUM, QUAM, Taylor and Kuyatt (1)2, and Chapter 19 of MARLAP (2).  
1.3 The system of units for this guide is not specified. Dimensional quantities in the guide are presented only as illustrations of calculation methods. The examples are not binding on products or test methods treated.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

  • Guide
    40 pages
    English language
    sale 15% off
  • Guide
    40 pages
    English language
    sale 15% off
ASTM
ASTM E1620-97(2022)(Terminology)
Standard Terminology Relating to Liquid Particles and Atomization

SCOPE
1.1 In a broad sense, this terminology covers terminology associated with liquid particles dispersed in gas. The principal emphasis, however, is on particles produced by the process of atomization.  
1.2 All terms, followed by their definitions, are arranged alphabetically. In addition, the terminology contains several tables wherein terms related to specific subjects are segregated and identified.  
1.3 Within the broad scope, the following specific categories are included:  
1.3.1 Terms pertaining to the structure and condition of individual particles or groups of particles as observed in nature.  
1.3.2 Terms pertaining to the structure and condition of individual particles or groups of particles produced by an atomizing device.  
1.3.3 Terms pertaining to atomizing devices according to the primary energy source responsible for spray development. (When more than one term is used for the same device or class of devices, the alternative term is followed by the preferred term.) Definitions of the devices may refer to their construction, operating principle, or distinctive spray characteristics. The atomizers, however, are not classified by their respective areas of application or end use. Moreover, the listed terms are generic and do not include brand names, trademarks, or proprietary designations.  
1.3.4 Terms pertaining to statistical parameters involving particle measurement, particle size, and size distribution functions.  
1.3.5 Terms pertaining to instruments and test procedures utilized in the characterization of liquid particles and sprays.      
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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
    7 pages
    English language
    sale 15% off
ASTM
ASTM D7385-21(Guide)
Standard Guide for Estimating Carbon Saturation by Temperature Rise Upon Immersion

SIGNIFICANCE AND USE
5.1 It is often useful to estimate the degree of saturation, and hence the expected remaining service life, of activated carbon that has been in use for some time. This guide is applicable when such information must be obtained fairly rapidly under field conditions without access to optimal analytical instruments.3 The organic liquid used should be of the same organic composition as that adsorbed on the carbon sample.
SCOPE
1.1 This guide covers the measurement of the temperature rise resulting from the heat of immersion when a known mass of a specified organic liquid is added to a sample of activated carbon. If the carbon has been in use as an adsorbent and may therefore be partially or fully exhausted, its degree of saturation may be estimated by comparing its temperature rise with that of an unused sample of the same activated carbon.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
1.4 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.

  • Guide
    2 pages
    English language
    sale 15% off
  • Guide
    2 pages
    English language
    sale 15% off
ASTM
ASTM D7902-20(Terminology)
Standard Terminology for Radiochemical Analyses

SIGNIFICANCE AND USE
3.1 This terminology standard describes terms and definitions used in standards for radiochemical analysis maintained by ASTM Committee D19 on Water. The terminology is also recommended for general use in the radiochemistry community.
SCOPE
1.1 This standard describes terminology commonly used in radiochemistry and radioanalysis.  
1.2 The values stated in SI units are to be regarded as standard. Other units of measurement, including some units that are not accepted for use with the SI, are also defined.  
1.3 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.  
1.4 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
    10 pages
    English language
    sale 15% off
  • Standard
    10 pages
    English language
    sale 15% off
ASTM
ASTM E799-03(2020)e1(Practice)
Standard Practice for Determining Data Criteria and Processing for Liquid Drop Size Analysis

SIGNIFICANCE AND USE
4.1 These criteria6 and procedures provide a uniform base for analysis of liquid drop data.
SCOPE
1.1 This practice gives procedures for determining appropriate sample size, size class widths, characteristic drop sizes, and dispersion measure of drop size distribution. The accuracy of and correction procedures for measurements of drops using particular equipment are not part of this practice. Attention is drawn to the types of sampling (spatial, flux-sensitive, or neither) with a note on conversion required (methods not specified). The data are assumed to be counts by drop size. The drop size is assumed to be the diameter of a sphere of equivalent volume.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 The analysis applies to all liquid drop distributions except where specific restrictions are stated.  
1.4 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
    6 pages
    English language
    sale 15% off
ASTM
ASTM E487-20(Test Method)
Standard Test Methods for Constant-Temperature Stability of Chemical Materials

SIGNIFICANCE AND USE
5.1 These test methods are useful adjunct to dynamic thermal tests that are performed under conditions in which the sample temperature is increased continuously at a programmed rate. Results obtained under dynamic test conditions present difficulties in determining the temperature at which an exotherm initiates because onset temperature is dependent on heating rate. These test methods describe in the present standard attempts to determine the onset temperature under isothermal conditions where the heating rate is zero.
SCOPE
1.1 These test methods describe the assessment of constant-temperature stability (CTS) of chemical materials that undergo exothermic reactions. The techniques and apparatus described may be used on solids, liquids, or slurries of chemical substances.  
1.2 When a series of materials is tested by these test methods, the results permit ordering the materials relative to each other with respect to their thermal stability.  
1.3 Limitations of Test:  
1.3.1 These test methods are limited to ambient temperatures and above.  
1.3.2 These test methods determine neither a safe storage temperature nor a safe processing temperature.  
Note 1: A safe storage or processing temperature requires that any heat produced by a reaction be removed as fast as generated and that proper consideration be given to hazards associated with reaction products.  
1.3.3 When these test methods are used to order the relative thermal stability of materials, the tests must be run under the same confinement condition (see 8.3).  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 This standard should be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.  
1.6 This standard may involve hazardous materials, operations, and equipment. 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.  
1.7 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
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off