---
title: "Machine-made mineral fibres: exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/machine-made-mineral-fibres/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/machine-made-mineral-fibres/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/machine-made-mineral-fibres/
---

Hazard search

# Machine-made mineral fibres

CAS number

No CAS number

Also known as

Machine made mineral fibre (MMMF) (except for ceramic refractory) · Man-made mineral fibres · Mineral wool fiber · MMMF · Rock wool · Slag wool · Synthetic vitreous fibers

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 5 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 59/2** / Man-made mineral fibre by PCM / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs59-2.pdf) | Active (pump) | Cowled head with 0.8um MCE filter | GR + PCM | [225-54A](https://analyt-mtc.com/catalog/product/asbestos-sampling/#part-225-54a) / [225-1913](https://analyt-mtc.com/catalog/product/asbestos-sampling/#part-225-1913) |
| **NIOSH 7400** / Other fibres by PCM / [Method document (opens in a new tab)](https://www.cdc.gov/niosh/docs/2003-154/pdfs/7400.pdf) | Active (pump) | Filter Cassette |  | [225-321](https://analyt-mtc.com/catalog/product/bestchek-asbestos-cassettes/#part-225-321) / [225-321A](https://analyt-mtc.com/catalog/product/bestchek-asbestos-cassettes/#part-225-321a) / [225-1934](https://analyt-mtc.com/catalog/product/bestchek-asbestos-cassettes/#part-225-1934) |
| **NIOSH 7400** / Other fibres by TEM / [Method document (opens in a new tab)](https://www.cdc.gov/niosh/docs/2003-154/pdfs/7400.pdf) | Active (pump) | Filter Cassette |  | [225-327](https://analyt-mtc.com/catalog/product/bestchek-asbestos-cassettes/#part-225-327) |

Methods and limits as published by their agencies and summarised by SKC; check the current method and the limit that applies to you before sampling.

Source: [SKC Ltd (UK), Hazard Search, used with SKC's permission (opens in a new tab)](https://www.skcltd.com/hazard-search.html); [SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)](https://international.skcinc.com/sampling-guides/)