| Type of Sample / Test | Test Description | Standard | HOKLAS Accreditation |
| Bituminous materials | Quantitative extraction of bitumen from bituminous paving mixtures | ASTM D2172-95 (Method A using a shing method) | Yes |
| ASTM D2172/D2172M-17e1 |
| Bituminous materials | Sieve analysis of fine and coarse aggregates and materials finer than 75 micron sieve in mineral aggregates by washing | ASTM C117-95 | Yes |
| ASTM C136-96a with modification |
| Bituminous materials | Theoretical ma ximum specific gravity of bituminous paved mixtures (weighing in water method) | ASTM D2041-95 | Yes |
| Bituminous materials | Bulk specific gravity and density of non absorptive compac ted bituminous mixtures | ASTM D2726-96a | Yes |
| ASTM D2726/D2726M-17 |
| Bituminous materials | Percentage air voids in compacted mixtures | ASTM D3203-94 | Yes |
| ASTM D3203 / D3203M-17 |
| Bituminous materials | Bulk Density - Saturated Surface Dry (SSD) | BS EN 12697-6: 2003 Procedure A & B | Yes |
| BS EN 12697-6: 2012 Procedure A & B |
| Bituminous materials | Air voids content of bituminous specimens | BS EN 12697-8: 2003 | Yes |
| BS EN 12697-8 : 2018 |
| Bituminous materials | Penetration | ASTM D5 / D5M-13 | Yes |
| ASTM D5 / D5M-19 |
| BS EN 1426 : 2015 |
| Bituminous materials | Softening Point | ASTM D36 / D36M-14 | Yes |
| BS 2000-58 : 2015 |
| BS EN 1427 : 2015 |
| Bituminous materials | Density, stability and flow of bituminous mixtures using Marshall Apparatus | ASTM D1559-89 Chapter 7, MS-2 Asphalt Mix Design Methods (7th edition 2014), Asphalt Institute | Yes |
| Bituminous materials | Ductility | ASTM D113-07 | Yes |
| Bituminous materials | Solubility of asphalt materials | ASTM D2042-15 | Yes |
| Bituminous materials | Effects of heat and air on asphaltic materials (Thin Film Oven Test) | ASTM D1754 / D1754M-09 (2014) | Yes |
| Bituminous materials | Viscosity of asphalt by vacuum capillary viscometer | ASTM D2171 / D2171M-10 | Yes |
| Bituminous materials | Loss in mass after heating of industrial bitumen | BS EN 13303 : 2009 | Yes |
| Bituminous materials | Density of semi solid and solid asphalt materials by Nickel Crucible Method | ASTM D3289-17 | Yes |
| Bituminous materials | Particle size distribution of mineral filler for bituminous paving mixtures | ASTM D546-17 with modifications excluding Cl. 6 | Yes |
| Bituminous materials | Density of filler for bituminous paving mixtures | BS EN 196-6 :2010 : Annex NC with modification | No |
