---
title: "Iron salts: exposure limits and sampling — Analyt-MTC"
url: https://analyt-mtc.com/tools/hazard-search/iron-salts/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/iron-salts/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/iron-salts/
---

Hazard search

# Iron salts

CAS number

No CAS number

Also known as

Ferric chloride · Ferrous chloride · Iron salts (as Fe) · Iron(II) salts · Iron(III) salts

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 1 mg/m³ |  |
| 15-minute STEL | 2 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 91/2** / Metals & metalloids by XRF / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs91-2.pdf) | Active (pump) | IOM with 0.8µm MCE filter | XRF | [225-70A](https://analyt-mtc.com/catalog/product/haz-dust-7204-particulate-monitor/#part-225-70a) / [225-1930](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-1930) |
| **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 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) |
| **BS ISO 15202-1: 2020** / Determination of metals and metalloids in airborne particulate matter by ICP | Active (pump) | IOM with 0.8µm MCE filter |  | [225-70A](https://analyt-mtc.com/catalog/product/haz-dust-7204-particulate-monitor/#part-225-70a) / [225-1930](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-1930) |

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/)