---
title: "Potassium hydroxide (1310-58-3): sampling methods"
url: https://analyt-mtc.com/tools/hazard-search/potassium-hydroxide-1310-58-3/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/potassium-hydroxide-1310-58-3/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/potassium-hydroxide-1310-58-3/
---

Hazard search

# Potassium hydroxide

CAS number

1310-58-3

Also known as

Caustic potash · Potassium hydrate · Potassium hydroxide (alkaline dust) · Potassium hydroxide (as K) · Potassium lye

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 15-minute STEL | 2 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 14/4** / General inhalable or respirable dusts by gravimetric analysis / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs14-4.pdf) | Active (pump) | IOM with GF filter | AA or AES | [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) / [225-1930](https://analyt-mtc.com/catalog/product/mixed-cellulose-ester-membrane-filters/#part-225-1930) |
| **NIOSH 7401** / Alkali dusts by Acid-base titration / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/7401.pdf) | Active (pump) | 1µm PTFE filter in cassette | TITRA | [225-17-01](https://analyt-mtc.com/catalog/product/ptfe-polytetrafluoroethylene-filters/#part-225-17-01) / [225-2LF](https://analyt-mtc.com/catalog/product/sureseal-cassette-blanks/#part-225-2lf) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) / [225-1715](https://analyt-mtc.com/catalog/product/ptfe-polytetrafluoroethylene-filters/#part-225-1715) |
| **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) |
| **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) |

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/)