The production of Reference materials (RM's) by I.I.S.
The Institute for Interlaboratory Studies started preparation of Reference Materials in 1996. The Reference Materials are certified on the basis of the results of one or more interlaboratory studies. The materials are multipurpose and available in handy quantities. Certification reports are available for each RM and can be obtained from the Institute.
All reference materials have a guaranteed shelf life. The Institute regularly monitors the validity of the materials and informs the registered users accordingly.
Available Reference Materials produced by iis
| Type of Reference Material | Certified values | Amount |
| Regular aviation kerosine (type Jet Fuel A1) | Aromatics, Density, Freezing Point, Kin. viscosity, MSEP, Naphtalenes, Smoke Point, Sulphur, i.b.p., 50% rec., f.b.p. | 250 ml |
| High purity o-xylene | p-Xylene, m-Xylene, Ethylbenzene, Cumene, Styrene, Ethyltoluenes, n-Propylbenzene | 55 ml |
| Used lubricating oil/waste oil | Wear metals: Al, Ba, Ca, Cr, Cu, Mg, P, Zn | 10 ml |
| Methanol | Purity, IBP, Dry point, Density, Specific Gravity, Apparent Specific Gravity, Water | 250 ml |
| n-Paraffines, i-Paraffines, total Paraffines, Naphthenes (%M/M & %V/V) | 10 ml |
|
| n-Paraffines, i-Paraffines, total Paraffines, Naphthenes (%M/M & %V/V) | 10 ml |
|
| Mono Ethylene Glycol, MEG | DEG, Purity, Specific Gravity 20/20°C, water | 200 ml |
| Fuel Oil | Micro Carbon Residue (ASTM D4530:93) | 20 ml |
| Ethanol | Purity, Purity on db, Strength, Apparent Density @20°C, water | 100 ml |
| Low Sulphur Automotive Gasoil | Aromatics by IP 391, Cloud Point, CFPP, Density, Sulphur | 100ml |
| Low Sulphur B5 Diesel | Mono Aromatics by IP 391, Cloud Point, Density, Sulphur, Water |
100ml |
| n-decane | Flash Point ASTM D56, D3828, IP 170, 303, 523 and ISO 13736, 3679 | 100ml |