Thermal Conductivity Reference Materials & Transfer Standards
European Certified Reference Materials
The Institute for Reference Materials and Measurements, IRMM can supply European Certified Reference Materials:
- BCR-039 Pyrex Glass: BCR-039 Certificate and BCR-039 Report
- IRMM-440 Glass fibre board (34mm thick): IRMM-440 Certificate and IRMM-440 Report
- BCR-724 Glass Ceramic: BCR-724 Certificate and BCR-724 Report
The UK sales contact for IRMM references is the Laboratory of the Government Chemist
NPL Transfer Standards
Each transfer standard is measured in one of our national standard apparatus and is provided with a certificate showing traceability to the UK national standards and UKAS accreditation (UKAS 4002) for producing reference materials to ISO Guide 34.
| Material: EXPANDED POLYSTYRENE | ||
| Lateral dimensions: | 305 mm x 305 mm | 610 mm x 610 mm |
| Thickness range: | 25 mm to 50 mm | 25 mm to 150 mm |
| Temperature range: | -150 °C to 50 °C | 5 °C to 40 °C |
| Number of temperature: | 5 | 5 |
| Estimated uncertainty: | ±2.0% | ±2.0% to ±2.5% |
| Guarded Hot Plate: | LTGHP | 610GHP |
| Material: PERSPEX (polymethylmethacrylate) | ||
| Lateral dimensions: | 305 mm x 305 mm | |
| Thickness range: | 31 mm | |
| Temperature range: | -10 °C to 60 °C | |
| Number of temperature: | 5 | |
| Estimated uncertainty: | ±3.0% | |
| Guarded Hot Plate: | VGHP | |
| NPL batch code: | NPL 05/01 | |
NPL Reference Materials
NPL reference material specimens are cut from a batch of material that has been characterised by a series of measurements on material that is known to have stable and predictable properties. They have a higher calibration uncertainty than the equivalent transfer standard due to the contribution of variation within the batch. They are provided with a certificate showing traceability to the UK national standards and UKAS accreditation (UKAS 4002) for producing reference materials to ISO Guide 34.
| Material: | STAINLESS STEEL 304 | INCONEL 600 | PURE IRON |
| Diameter: | 60 mm | 60 mm | 25 mm |
| Temperature range: | 100 °C to 500 °C | 100 °C to 500 °C | 100 °C to 500 °C |
| Estimated uncertainty: | ±4.8% | ±4.8% | ±6.1% |
| NPL batch code: | NPL 2S09 | NPL 2I09 | NPL Fe09 |
| Material: PERSPEX (polymethylmethacrylate) | ||
| Maximum dimensions: | 305 mm x 305 mm | |
| Maximum thickness: | 31 mm | |
| Temperature range: | -10 °C to 60 °C | |
| Estimated uncertainty: | ±4.0% | |
| NPL batch code: | NPL 05/01 | |
NB: As customer demand for this material covers many sizes, we produce these transfer standards to order. If you do not have machining facilities, we can obtain a quote from the NPL Engineering Services for preparing specimens to the sizes that you require.
Contact
Customer Services tel: +44 20 8943 6245
E-mail: thermal_enquiries@npl.co.uk