SCOPE OF ACCREDITATION TO ISO GUIDE 34:2009 DCG PARTNERSHIP 1, LTD. 4170 A South Main Pearland, TX 77581 Louis D Agostaro Phone: 281-648-1894 Ext. 201 REFERENCE MATERIAL PRODUCER Valid To: November 30, 2018 Certificate Number: 3487.02 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this Producer for the production of certified reference materials and reference materials of the following categories: Category and 1 Category A: Chemical Composition A7 Gases A7.1 Gas Mixtures Natural Gas and Similar Gaseous Mixtures 2,2-Dimethylpropane Hexanes Plus Range: (0.01-30.0) mol % Uncertainty: ± 1.74 % Range: (0.01-30.0) mol % Uncertainty: ± 1.30 % Uncertainty: ± 0.38 % Range: (0.01-10.0) mol % Uncertainty: ± 0.87 % Range: (0.01-10.0) mol % Uncertainty: ± 1.27 % Uncertainty: ± 2.21 % Uncertainty: ± 0.93 % Uncertainty: ± 1.57 % Uncertainty: ± 1.59 % Uncertainty: ± 5.29 % Uncertainty: ± 13.20 % GPA 2261 ASTM D1945 (A2LA Cert. No. 3487.02) 07/05/2018 Page 1 of 7
1 Natural Gas Liquid and Similar Mixtures Natural Gas and Similar Gaseous Mixtures - Extended 2,2-Dimethylpropane Hexanes Plus 2,2-Dimethylpropane Hexanes Plus Range: (0.01-5.0) mol % Uncertainty: ± 5.26 % Range: (0.01-5.0) mol % Uncertainty: ± 4.26 % Range: (0.01 5.0) mol % Uncertainty: ± 2.07 % Range: (0.01-95.0) mol % Uncertainty: ± 0.61 % Uncertainty: ± 0.48 % Uncertainty: ± 5.70 % Uncertainty: ± 2.13 % Uncertainty: ± 3.80 % Range: (0.01 15.0) mol % Uncertainty: ± 5.44 % Range: (0.01 15.0) mol % Uncertainty: ± 5.70 % Range: (0.01-20) mol % Uncertainty: ± 7.56 % Range: (0.01-30.0) mol % Uncertainty: ± 1.74 % Uncertainty: ± 1.24% Range: (0.01-30.0) mol % Uncertainty: ± 1.30 % Range: (0.01-10.0) mol % Uncertainty: ± 0.87 % Range: (0.01-10.0) mol % Uncertainty: ± 1.27 % Uncertainty: ± 2.21 % Uncertainty: ± 0.93 % Uncertainty: ± 1.57 % Uncertainty: ± 1.59 % Uncertainty: ± 5.29 % Uncertainty: ± 13.20 % GPA 2177 GPA 2286 (A2LA Cert. No. 3487.02) 07/05/2018 Page 2 of 7
1 Natural Gas Liquid and Similar Mixtures - Extended Petroleum Naphthas Individual Components in Spark Ignition Engine Fuels 2,2-Dimethylpropane Hexanes Plus C1 C9 Hydrocarbons C5 C13 Hydrocarbons C1 C6 Oxygenates Range: (0.01-5.0) mol % Uncertainty: ± 5.26 % Range: (0.01-5.0) mol % Uncertainty: ± 4.26 % Range: (0.01 5.0) mol % Uncertainty: ± 2.07 % Range: (0.01-95.0) mol % Uncertainty: ± 0.61 % Uncertainty: ± 0.48 % Uncertainty: ± 5.70 % Uncertainty: ± 2.13 % Uncertainty: ± 3.80 % Range: (0.01 15.0) mol % Uncertainty: ± 5.44 % Range: (0.01 15.0) mol % Uncertainty: ± 5.70 % Range: (0.01-20) mol % Uncertainty: ± 7.56 % Range: (0 100) mol % Uncertainty: ± 15.0 % Range: (0 100) mol % Uncertainty: ± 20.0% Range: (0 100) mol % Uncertainty: ± 20.0% GPA 2186 ASTM D5134 ASTM D6730 (A2LA Cert. No. 3487.02) 07/05/2018 Page 3 of 7
1 Hydrocarbons in Liquefied Petroleum Gases and / Propene Mixtures Reformed Gas and Similar Gaseous Mixtures Ethylene Propylene Propadiene Trans-2-Butene 1-Butene Isobutylene Cis-2-Butene Ethylene Hydrogen Oxygen Carbon Monoxide Uncertainty: ± 2.72 % Uncertainty: ± 2.28 % Uncertainty: ± 2.62 % Uncertainty: ± 1.64 % Uncertainty: ± 2.01 % Uncertainty: ± 18.65 % Uncertainty: ± 1.50 % Uncertainty: ± 1.50 % Uncertainty: ± 1.69 % Uncertainty: ± 1.50 % Uncertainty: ± 1.50 % Uncertainty: ± 1.78% Uncertainty: ± 1.75 % Uncertainty: ± 4.85 % Range: (0.1-100.0) mol % Uncertainty: ± 2.72 % Uncertainty: ± 2.28 % Uncertainty: ± 2.62 % Range: (0.1-100.0) mol % Uncertainty: ± 3.27 % Uncertainty: ± 14.42 % Uncertainty: ± 9.91 % Uncertainty: ± 6.29 % Uncertainty: ± 16.40 % ASTM D2163 ASTM D1946 (A2LA Cert. No. 3487.02) 07/05/2018 Page 4 of 7
1 Sulfur Compounds in Natural Gas and Gaseous Fuels Hydrogen Sulfide Carbonyl Sulfide Sulfur Dioxide thiol thiol Dimethyl Sulfide Carbon Disulfide Methyl Ethyl Sulfide 2-thiol t-butanethiol 1-thiol Thiophene 1,2 Butanethiol i-butanethiol Diethyl Sulfide thiol 2-Methyl-1- thiol Dimethyl Disulfide Diethyl Disulfide Ethyl Methyl Disulfide Dibenzothiophene Range: (0.01 1000) mg/m 3 Uncertainty: ± 13.80% Range: (0.01 1000) mg/m 3 Uncertainty: ± 13.80% Range: (0.01 1000) mg/m 3 Uncertainty: ± 13.80% ASTM D5504 GCxSCD,UVF (A2LA Cert. No. 3487.02) 07/05/2018 Page 5 of 7
1 Sulfur Compounds in Light Petroleum Liquids Hydrogen Sulfide Carbonyl Sulfide Sulfur Dioxide thiol thiol Dimethyl Sulfide Carbon Disulfide 2-thiol 2-Methyl-2- thiol 1-thiol Ethyl methyl sulfide 2-Butanethiol Thiophene 2-Methyl-1- thiol Diethyl Sulfide 1-Butanethiol Dimethyl Disulfide 2-Methylthiophene 3-Methylthiophene Diethyl Disulfide Methylbenzothiophene Diphenyl Sulfide 3,4 Dibenzothiophene Benzothiophene Ethylbenzothiophene ASTM D5623 GCxSCD,UVF (A2LA Cert. No. 3487.02) 07/05/2018 Page 6 of 7
Sub- Category of 1 Category A: Chemical Composition A3: Organic s A3.5 Petroleum products Total Sulfur in Light Hydrocarbons, Diesel Engine Fuel, and Related Chemicals Total Sulfur in Aromatic Hydrocarbons and Related Chemicals Trace in Liquid Petroleum Hydrocarbons Total in Petroleum and Related Petroleum Products Total Chloride in Aromatic Hydrocarbons and Related Chemicals Method A Total Acid Number in Mineral Oil and Related Petroleum Products Range: (0.1 10 000) mg/kg Uncertainty: ± 10.03 % Range: (0.1 15) mg/kg Uncertainty: ± 8.8 % Range: (0.3 100) mg/kg Uncertainty: ± 5.0 % Range: (1.0 500) ng/µl Uncertainty: ± 5.0 % Range: (1.0 25) mg/kg Uncertainty: ± 5.0 % Range: (0.1 150) mg/g KOH Uncertainty: ± 7.5 % Category C: Physical Properties C6 s for Physiochemical Properties Procedure A Flash Point of Petroleum Products and Liquid Fuels Pour Point of Petroleum Products and Liquid Fuels Cloud Point of Petroleum Products and Liquid Fuels Density, Relative Density, and API Gravity of Petroleum distillates and Related Petroleum Products Vapor Pressure of Petroleum Products and Liquid Fuels Range: (40 150) C Uncertainty: ± 4.02 % Range: (-50-10) C Uncertainty: ± 14.23 % Range: (-30 5) C Uncertainty: ± 6.28 % Range: (0.6 1.2) g/ml Uncertainty: ± 4.0 % Range: (7 130) kpa Uncertainty: ± 5.0 % ASTM D5453 ASTM D7183 ASTM D4629 ASTM D5762 ASTM D5808 ASTM D664 ASTM D93 ASTM D97 ASTM D2500 ASTM D4052 ASTM D5191 UVF UVF Chemiluminescence Chemiluminescence Microcoulometry Potentiometric Titration Pensky- Martens Closed Cup Automatic Pour Point Apparatus Automatic Cloud Point Apparatus Digital Density Meter Vapor Pressure Apparatus 1 This reference material producer is approved to produce s (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 Producer s issued certificates for certified reference materials. (A2LA Cert. No. 3487.02) 07/05/2018 Page 7 of 7
Accredited 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 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 2017. President and CEO For the Accreditation Council Certificate Number 3487.02 Valid to November 30, 2018 For reference materials to which this accreditation applies, please refer to the reference material producer s Scope of Accreditation.