---
title: "Magnesium oxide (inhalable) (1309-48-4): sampling methods"
url: https://analyt-mtc.com/tools/hazard-search/magnesium-oxide-inhalable-1309-48-4/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/magnesium-oxide-inhalable-1309-48-4/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/magnesium-oxide-inhalable-1309-48-4/
---

Hazard search

# Magnesium oxide (inhalable)

CAS number

1309-48-4

Also known as

Maglite · Magnesia · Magnesium monoxide · Magnesium oxide (as Mg) (inhalable dust) · Magnesium oxide (as Mg) (respirable dust) · Magnesium oxide (as Mg, elements by ICP) · Magnesium oxide (respirable dust and fume) · Magnesium oxide fume (respirable dust) · Magnesium oxide fume (total dust)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 10 mg/m³ | Magnesium oxide (inhalable) |
| 8-hour TWA | 4 mg/m³ | Magnesium oxide (respirable dust and fume) |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 14/4** / General inhalable or respirable dusts by gravimetric analysis (respirable) / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs14-4.pdf) | Active (pump) | IOM & foam (or cyclone) with GF filter | GR | [225-70A](https://analyt-mtc.com/catalog/product/haz-dust-7204-particulate-monitor/#part-225-70a) / [225-772](https://analyt-mtc.com/catalog/product/iom-sampler/#part-225-772) / [225-69](https://analyt-mtc.com/catalog/product/plastic-cyclone/#part-225-69) / [225-58F](https://analyt-mtc.com/catalog/product/glass-fibre-depth-filters/#part-225-58f) |
| **MDHS 14/4** / General inhalable or respirable dusts by gravimetric analysis (total inhalable) / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs14-4.pdf) | Active (pump) | IOM with GF filter | GR | [225-70A](https://analyt-mtc.com/catalog/product/haz-dust-7204-particulate-monitor/#part-225-70a) / [225-58F](https://analyt-mtc.com/catalog/product/glass-fibre-depth-filters/#part-225-58f) |
| **NIOSH 7300** / Elements by ICP (Nitric/perchloric acid ashing) / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/7300.pdf) | Active (pump) | 0.8µm MCE filter in 37mm cassette |  | [225-3-01](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-3-01) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **NIOSH 7303** / Elements by ICP (Hot block/HCl/HNO3 Digestion) / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/7303.pdf) | Active (pump) | 0.8µm MCE filter in 37mm cassette | ICP-AES | [225-3-01](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-3-01) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **OSHA ID 121** | Active (pump) |  | AA or AES | [225-3-01](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-3-01) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) / [225-503](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-503) / [225-105](https://analyt-mtc.com/catalog/product/gs-1-respirable-dust-cyclone/#part-225-105) |
| **OSHA ID-121** / Metal & metalloid particulates by AAS / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-id121.pdf) | Active (pump) | 0.8µm MCE filter in preloaded cassette |  | [225-3-01](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-3-01) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **OSHA ID-121** / Metal & metalloid particulates by AAS / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-id121.pdf) | Active (pump) | 0.8µm MCE filter in preloaded cassette with cyclone |  | [225-3-01](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-3-01) / [225-105](https://analyt-mtc.com/catalog/product/gs-1-respirable-dust-cyclone/#part-225-105) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **ISO 10882-1: 2011** / Welding fumes by gravimetric or chemical analysis / [Method document (opens in a new tab)](https://shop.bsigroup.com/ProductDetail/?pid=000000000030144532) | Active (pump) | Headset & minisampler with 13mm MCE filter |  | [225-6200](https://analyt-mtc.com/catalog/product/face-level-sampling/#part-225-6200) / [225-6201](https://analyt-mtc.com/catalog/product/face-level-sampling/#part-225-6201) / [225-6202](https://analyt-mtc.com/catalog/product/biostage/#part-225-6202) / [225-8050](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-8050) |

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/)