ISO 15672:2000
Rubber and rubber additives — Determination of total nitrogen content using an automatic analyser
This International Standard specifies an instrumental (automatic analyser) method for the determination of total
nitrogen in rubber and rubber additives.
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Rubber and rubber additives— Determination of total nitrogen content using an automatic analyser
Foreword
Rubber and rubber additives— Determination of total nitrogen content using an automatic analyser
1 Scope
2 Terms and definitions
3 Principle
3.1 Specified is a reliable, rapid, instrumental (automatic) method for determining total nitr...
3.2 The actual process can vary substantially from instrument to instrument because a variety ...
3.3 In the
3.4 In the
3.5 In the
3.6 The concentration of nitrogen is calculated in each configuration as a function of the fol...
4 Requirements for apparatus
4.1 Because a variety of instrumental (automatic analyser) component configurations can be use...
4.2 The conditions for combustion of the sample shall be such that (for the full range of appl...
4.3 Representative aliquots of the combustion gases shall then be treated to reduce nitrogen o...
4.4 For the configuration described in
4.5 For the configuration described in
4.6 For the configuration described in
4.7 The detection system shall determine nitrogen without interference.
4.8 The detector should ideally provide a linear response that correlates directly with nitrog...
4.9 The system shall include provisions for evaluating nonlinear response appropriately, so th...
4.10 Finally, except for those systems in which the nitrogen concentration is expressed as a d...
5 Reagents
5.1 Helium
5.2 Oxygen
5.3 Additional reagents
6 Instrument (automatic analyser) preparation and calibration
6.1 Assemble the instrumental (automatic analyser) system in accordance with the manufacturer'...
6.2 For the response (drift) adjustment, weigh and analyse (in accordance with the manufacture...
6.3 For the calibration, select calibrating agents and materials specified by the manufacturer...
6.4 For the calibration procedure, analyse portions of the calibrating agent chosen (see
6.5 For the periodic calibration verification and recalibration, analyse a control sample on a...
7 Procedure
8 Calculation
9 Precision
9.1 Although the precision of this method was calculated from data obtained from the analysis ...
9.2 The precision data given in this clause give an estimate of the precision of this method w...
9.3 The
9.4 The
9.5 Bias
10 Test report
Bibliography
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Rubber and rubber additives— Determination of total nitrogen content using an automatic analyser
Foreword
Rubber and rubber additives— Determination of total nitrogen content using an automatic analyser
1 Scope
2 Terms and definitions
3 Principle
3.1 Specified is a reliable, rapid, instrumental (automatic) method for determining total nitr...
3.2 The actual process can vary substantially from instrument to instrument because a variety ...
3.3 In the
3.4 In the
3.5 In the
3.6 The concentration of nitrogen is calculated in each configuration as a function of the fol...
4 Requirements for apparatus
4.1 Because a variety of instrumental (automatic analyser) component configurations can be use...
4.2 The conditions for combustion of the sample shall be such that (for the full range of appl...
4.3 Representative aliquots of the combustion gases shall then be treated to reduce nitrogen o...
4.4 For the configuration described in
4.5 For the configuration described in
4.6 For the configuration described in
4.7 The detection system shall determine nitrogen without interference.
4.8 The detector should ideally provide a linear response that correlates directly with nitrog...
4.9 The system shall include provisions for evaluating nonlinear response appropriately, so th...
4.10 Finally, except for those systems in which the nitrogen concentration is expressed as a d...
5 Reagents
5.1 Helium
5.2 Oxygen
5.3 Additional reagents
6 Instrument (automatic analyser) preparation and calibration
6.1 Assemble the instrumental (automatic analyser) system in accordance with the manufacturer'...
6.2 For the response (drift) adjustment, weigh and analyse (in accordance with the manufacture...
6.3 For the calibration, select calibrating agents and materials specified by the manufacturer...
6.4 For the calibration procedure, analyse portions of the calibrating agent chosen (see
6.5 For the periodic calibration verification and recalibration, analyse a control sample on a...
7 Procedure
8 Calculation
9 Precision
9.1 Although the precision of this method was calculated from data obtained from the analysis ...
9.2 The precision data given in this clause give an estimate of the precision of this method w...
9.3 The
9.4 The
9.5 Bias
10 Test report
Bibliography