Quality Control Consultants Ltd. 品質管制顧問有限 …

1 Contact Details Registration No. HOKLAS 019 Page 1 of 1 019 TEST CAL Quality Control Consultants Ltd. ADDRESS : Unit A&B, 7th Floor, Block 3, Tai Ping Industrial Centre, 53 Ting Kok Road, Tai Po, New Territories, Hong Kong 53 7 A&B ENQUIRY : Mr NG Chi-kwan Kevin, Technical Manager TELEPHONE : 2665 7131 FAX : 2664 2001 E-MAIL : WEBSITE ADDRESS : CLIENTELE : Public Contact details last updated on: 6 September 2019 Scope of Accreditation Registration No. HOKLAS 019 Page 1 of 28 Issue Date: 2 June 2020 Ref: HOKLAS019-138 Quality Control Consultants Ltd. 019 TEST CAL ADDRESS Main Laboratory : Unit A&B, 7th Floor, Block 3, Tai Ping Industrial Centre, 53 Ting Kok Road, Tai Po, New Territories, Hong Kong 53 7 A&B Branch / Regional Laboratories : Yau Tong Steel Testing Laboratory G/F.

2 , 4 Tung Yuen Street, Yau Tong, Kowloon, Hong Kong 4 Test Location : FuLuSha District, Sha Tian Town, Dong Guan City, Guang Dong Province, China ACCREDITED TEST CATEGORY : Calibration Services Construction Materials Scope of Accreditation Registration No. HOKLAS 019 Page 2 of 28 Issue Date: 2 June 2020 Ref: HOKLAS019-138 Quality Control Consultants Ltd. 019 TEST CAL Unit A&B, 7th Floor, Block 3, Tai Ping Industrial Centre, 53 Ting Kok Road, Tai Po, New Territories, Hong Kong 53 7 A&B Calibration Services ITEM TESTED OR MEASURED SPECIFIC TEST OR PROPERTY MEASURED@ @ CALIBRATION AND MEASUREMENT CAPABILITY (CMC)* * Mass and related measurement - Weight and balance - Electronic balance Calibration in accordance with in-house method QCC\CP6 over the following range.

3 Up to 100 g mg above 100 g to 250 g mg above 250 g to 600 g 12 mg above 600 g to kg 15 mg above kg to 21 kg g above 21 kg to 30 kg g above 30 kg to 75 kg g (Calibration is conducted using Class E2 weights of 1 mg to 200 g, Class F1 weights from 1 mg to 20 kg and Class F2 weights from 1 mg to 20 kg) On-site calibration in accordance with in-house method QCC\CP6 over the following range: up to 100 g mg to mg above 100 g to 250 g mg to 2 mg above 250 g to 600 g 12 mg to g above 600 g to kg 15 mg to g above kg to 21 kg g to g above 21 kg to 30 kg g to g above 30 kg to 75 kg g to 104 g (Calibration is conducted using Class E2 weights of 1 mg to 200 g, Class F1 weights from 1 mg to 20 kg and Class F2 weights from 1 mg to 20 kg) @ UNLESS OTHERWISE SPECIFIED, ACCREDITED ACTIVITIES ARE CONDUCTED AT THE LABORATORY.

4 * THE CALIBRATION UNCERTAINTY OF A DEVICE UNDER TEST IS USUALLY REPORTED AT 95% CONFIDENCE LEVEL AND DEPENDS ON BOTH THE CMC OF THE LABORATORY AND THE PERFORMANCE OF THE DEVICE DURING CALIBRATION. Scope of Accreditation Registration No. HOKLAS 019 Page 3 of 28 Issue Date: 2 June 2020 Ref: HOKLAS019-138 Quality Control Consultants Ltd. 019 TEST CAL Unit A&B, 7th Floor, Block 3, Tai Ping Industrial Centre, 53 Ting Kok Road, Tai Po, New Territories, Hong Kong 53 7 A&B Calibration Services ITEM TESTED OR MEASURED SPECIFIC TEST OR PROPERTY MEASURED@ @ CALIBRATION AND MEASUREMENT CAPABILITY (CMC)* * Mass and related measurement (cont d) - Weight and balance (cont d) - Weight Calibration in accordance with in-house method QCC\CP7 over the following ranges.

5 Up to 10 g mg above 10 g to 100 g mg above 100 g to 200 g mg above 200 g to 1 kg 29 mg above 1 kg to 3 kg 80 mg above 3 kg to 4 kg g above 4 kg to 15 kg g above 15 kg to 30 kg g above 30 kg to 60 kg g above 60 kg to 75 kg 31 g @ UNLESS OTHERWISE SPECIFIED, ACCREDITED ACTIVITIES ARE CONDUCTED AT THE LABORATORY. * THE CALIBRATION UNCERTAINTY OF A DEVICE UNDER TEST IS USUALLY REPORTED AT 95% CONFIDENCE LEVEL AND DEPENDS ON BOTH THE CMC OF THE LABORATORY AND THE PERFORMANCE OF THE DEVICE DURING CALIBRATION. Scope of Accreditation Registration No. HOKLAS 019 Page 4 of 28 Issue Date: 2 June 2020 Ref: HOKLAS019-138 Quality Control Consultants Ltd. 019 TEST CAL Unit A&B, 7th Floor, Block 3, Tai Ping Industrial Centre, 53 Ting Kok Road, Tai Po, New Territories, Hong Kong 53 7 A&B Construction Materials ITEM TESTED OR MEASURED SPECIFIC TEST OR PROPERTY MEASURED SPECIFICATION, STANDARD METHOD OR TECHNIQUE USED Admixture Sampling BS 5075: Part 1: 1982 Setting time BS EN 480-2: 2006 Admixture Ash content BS 5075: Part 1: 1982 App.

6 D2 (Amd. 4910) (chemical analysis) Dry material content BS 5075: Part 1: 1982 App. D1 (Amd. 4910) Conventional dry material content BS EN 480-8: 1997 BS EN 934-1: 2008 Cl. 4 & BS EN 934-2: 2009 Cl. & BS EN 480-8: 2012 pH value of liquid admixtures In-house method QCC/LP 6-06 BS EN 934-1: 2008 Cl. 4 & BS EN 934-2: 2009 Cl. & ISO 4316: 1977 Sodium oxide content In-house method QCC/LP 6-08 BS EN 480-12: 1998 BS EN 480-12: 2005 Potassium oxide content In-house method QCC/LP 6-08 BS EN 480-12: 1998 BS EN 480-12: 2005 Alkali content In-house Method QCC/LP 6-08 BS EN 480-12: 1998 BS EN 934-1: 2008 Cl. 4 & BS EN 934-2: 2009 Cl. & BS EN 480-12: 2005 Relative density of liquid admixtures BS 5075: Part 1: 1982 App. D3 (Amd.)

7 4910) Density ISO 758: 1976 Chloride ion content BS 5075: Part 1: 1982 App. E (Amd. 4910) Water soluble chloride content BS EN 934-1: 2008 Cl. 4 & BS EN 934-2: 2009 Cl. & BS EN 480-10: 1997 BS EN 480-10: 2009 Scope of Accreditation Registration No. HOKLAS 019 Page 5 of 28 Issue Date: 2 June 2020 Ref: HOKLAS019-138 Quality Control Consultants Ltd. 019 TEST CAL Unit A&B, 7th Floor, Block 3, Tai Ping Industrial Centre, 53 Ting Kok Road, Tai Po, New Territories, Hong Kong 53 7 A&B Construction Materials ITEM TESTED OR MEASURED SPECIFIC TEST OR PROPERTY MEASURED SPECIFICATION, STANDARD METHOD OR TECHNIQUE USED Aggregates Sampling BS 812: Part 102: 1989 CS3: 2013 Section 8 Particle size distribution BS 812: Part : 1985 + Amd.

8 6003 (by sieve analysis) CS3: 2013 Section 10 Flakiness index BS 812: Part : 1985 CS3: 2013 Section 11 Elongation index BS 812: Part 1: 1975 + Amd. 4572 BS 812: Part : 1990 CS3: 2013 Section 12 Methylene blue value CS3: 2013 Section 13 Los Angeles value CS3: 2013 Section 14 Aggregate impact value BS 812: Part 3: 1975 + Amd. 4616 Cl. 6 BS 812: Part 112: 1990 CS3: 2013 Section 15 Ten per cent fines value BS 812: Part 3: 1975 + Amd. 4616 Cl. 8 BS 812: Part 111: 1990 CS3: 2013 Section 16 Particle density and water absorption CS3: 2013 Section 17 Moisture content BS 812: Part 2: 1975 + Amd. 4615 Cl. 7 BS 812: Part 109: 1990 (Oven drying method) CS3: 2013 Section 18 Soundness BS 812: Part 121: 1989 CS3: 2013 Section 19 Drying shrinkage CS3: 2013 Section 20 Effect of organic substances by mortar CS3: 2013 Section 22 method Scope of Accreditation Registration No.

9 HOKLAS 019 Page 6 of 28 Issue Date: 2 June 2020 Ref: HOKLAS019-138 Quality Control Consultants Ltd. 019 TEST CAL Unit A&B, 7th Floor, Block 3, Tai Ping Industrial Centre, 53 Ting Kok Road, Tai Po, New Territories, Hong Kong 53 7 A&B Construction Materials ITEM TESTED OR MEASURED SPECIFIC TEST OR PROPERTY MEASURED SPECIFICATION, STANDARD METHOD OR TECHNIQUE USED Aggregates Aggregate crushing value BS 812: Part 3: 1975 + Amd. 4616 Cl. 7 (cont d) BS 812: Part 110: 1990 Bulk density, void and bulking BS 812: Part 2: 1975 + Amd. 4615 Cl. 6 Clay, silt and dust content BS 812: Part 1: 1975 + Amd. 4875 Cl. (Decantation method) Relative densities and water absorption BS 812: Part 2 : 1975 + Amd. 4615 Cl. 5 (Wire basket method and Gas jar method) Resistance to degradation of small size ASTM C131-81 coarse aggregate by abrasion and impact in the Los Angeles machine Resistance to degradation of large size ASTM C535-81 coarse aggregate by abrasion and impact in the Los Angeles machine Shell content in coarse aggregates BS 812: Part 106: 1985 Alkali silica reaction potential by ultra- CS1: 2010 Section 22 accelerated mortar-bar test Scope of Accreditation Registration No.

10 HOKLAS 019 Page 7 of 28 Issue Date: 2 June 2020 Ref: HOKLAS019-138 Quality Control Consultants Ltd. 019 TEST CAL Unit A&B, 7th Floor, Block 3, Tai Ping Industrial Centre, 53 Ting Kok Road, Tai Po, New Territories, Hong Kong 53 7 A&B Construction Materials ITEM TESTED OR MEASURED SPECIFIC TEST OR PROPERTY MEASURED SPECIFICATION, STANDARD METHOD OR TECHNIQUE USED Aggregate Water-soluble chloride salts BS 812: Part 117: 1988 Excluding Cl. 4 (chemical analysis) Total sulphate content BS 812: Part 118: 1988 Cl. 6 Total sulphur content BS EN 1744-1: 1998 Cl. 11 Excluding CS3 : 2013 Section 21 Cl. Acid-soluble material content BS 812: Part 119: 1985 Excluding Cl. 4 Water-soluble chloride salts content BS EN 1744-1: 1998 Cl.