SCOPE OF ACCREDITATION TO ISO GUIDE 34:2009

Transcription

1 SCOPE OF ACCREDITATION TO ISO GUIDE 34:2009 DCG PARTNERSHIP 1, LTD A South Main Pearland, TX Louis D Agostaro Phone: Ext. 201 REFERENCE MATERIAL PRODUCER Valid To: November 30, 2018 Certificate Number: In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this Reference Material Producer for the production of certified reference materials and reference materials of the following categories: Category and Sub-Category of Category A7.1 Analyzed Gases: Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatography and Chemiluminescence Hydrogen Sulfide Carbonyl Sulfide Sulfur Dioxide Methanethiol Ethanethiol Dimethylsulfide Carbon Disulfide Methylethylsulfide (A2LA Cert. No ) 05/26/2017 Page 1 of 7

2 2-Propanethiol t-butanethiol 1-Propanethiol Thiophene s-butanethiol i-butanethiol Diethylsulfide n-butanethiol Dimethyldisulfide Diethyldisulfide Analysis of Natural Gas Liquid Mixtures Containing Nitrogen and Carbon Dioxide by GC Nitrogen mol % ± % Carbon Dioxide mol % ± 4.26 % Methane mol % ± 2.07 % Ethane mol % ± 0.22 % Propane ± 0.41 % Isobutane ± 5.70 % n-butane and 2,2 Dimethylpropane ± 2.13 % (A2LA Cert. No ) 05/26/2017 Page 2 of 7

3 Isopentane mol % ± 5.44 % n-pentane mol % ± 1.69 % Hexanes Plus mol % ± 1.79 % for the Extended Analysis of Hydrocarbon Liquid Mixtures Containing Nitrogen and Carbon Dioxide by Temperature Programmed Gas Chromatography Nitrogen Carbon Dioxide Methane Ethane Propane Isobutane n-butane and 2,2 Dimethylpropane Isopentane wt % ± % wt % ± 4.26 % wt % ± 2.07 % wt % ± 0.22 % wt % ± 0.41 % wt % ± 5.70 % wt % ± 2.13 % wt % ± 5.44 % (A2LA Cert. No ) 05/26/2017 Page 3 of 7

4 n-pentane Hexanes Plus wt % ± 1.69 % wt % ± 1.79 % Analysis for Natural Gas and Similar Gaseous Mixtures by Gas Chromatography Nitrogen Carbon Dioxide Methane Ethane Propane Isobutane n-butane 2,2 Dimethylpropane Isopentane n-pentane Hexanes Plus mol % ± 1.74 % mol % ± 1.30 % ± 0.10 % mol % ± 0.87 % mol % ± 0.50 % ± 2.21 % ± 0.93 % ± 0.93 % ± 1.51 % ± 5.29 % ± % of Extended Analysis for Natural Gas and Similar Gaseous Mixtures by Temperature Programmed Gas Chromatography Nitrogen mol % ± 1.74 % (A2LA Cert. No ) 05/26/2017 Page 4 of 7

5 Methane Carbon Dioxide Ethane Propane Isobutane n-butane 2,2 Dimethylpropane Isopentane n-pentane Hexanes Plus Category A3.1 Pure organic compounds; Chromatography Standards ± 0.10 % mol % ± 1.30 % mol % ± 0.87 % mol % ± 0.50 % ± 2.21 % ± 0.93 % ± 1.86 % ± 1.51 % ± 5.29 % ± % Sulfur Compounds in Light Petroleum Liquids by Gas Chromatography and Sulfur Selective Detection Hydrogen Sulfide Carbonyl Sulfide (A2LA Cert. No ) 05/26/2017 Page 5 of 7

6 Sulfur Dioxide Methanethiol Ethanethiol Dimethyl Sulfide Carbon Disulfide 2-Propanethiol 2-Methyl-2-Propanethiol 1-Propanethiol Ethylmethyl sulfide 2-Butanethiol Thiophene 2-Methyl-1-Propanethiol Diethyl Sulfide 1-Butanethiol Dimethyl Disulfide 2-Methylthiophene 3-Methylthiophene Diethyl Disulfide Methylbenzothiophene Diphenyl Sulfide 3,4 Dibenzothiophene (A2LA Cert. No ) 05/26/2017 Page 6 of 7

7 Benzothiophene Ethylbenzothiophene Category A3.1 Pure organic compounds; Compounds for elemental analysis Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence Sulfur in Ethanol Sulfur in Diesel Sulfur in Isooctane Category C: Physical Properties mg/kg ± 7.12 % mg/kg ± 7.12 % mg/kg ± 7.12 % Acid Number of Petroleum Products by Potentiometric Titration ASTM D5453 ASTM D5453 ASTM D5453 UVF UVF UVF Acid Number of Petroleum Products by Potentiometric Titration in Mineral Oil mg/g KOH ± % ASTM D664 Titration Flash Point by Pensky Martens Closed Cup Tester Procedure A Distillate Fuels, New and In Use Lubricating Oils and Other Homogeneous Petroleum Liquids C ± 2.55 % ASTM D93 Pensky-Martens Closed Cup 1 This reference material producer is approved to produce Certified Reference Materials (CRM) for all items listed on the scope of accreditation. 2 The listed uncertainty represents expanded uncertainties expressed at approximately the 95 % level of confidence, using a coverage factor of k = 2. 3 Uncertainties for the certified values are available on the Reference Material Producer s issued certificates for certified reference materials. (A2LA Cert. No ) 05/26/2017 Page 7 of 7

8 Accredited Reference Material Producer A2LA has accredited DCG PARTNERSHIP 1, LTD. Pearland, TX This accreditation covers the specific materials listed on the agreed upon Scope of Accreditation. This producer meets the requirements of ISO Guide 34:2009 General Requirements for the Competence of Reference Material Producers. This accreditation demonstrates technical competence for a defined scope and the operation of a quality management system. Presented this 26 th day of May President and CEO For the Accreditation Council Certificate Number Valid to November 30, 2018 For reference materials to which this accreditation applies, please refer to the reference material producer s Scope of Accreditation.