---
title: "Carbon monoxide (630-08-0): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/carbon-monoxide-630-08-0/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/carbon-monoxide-630-08-0/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/carbon-monoxide-630-08-0/
---

Hazard search

# Carbon monoxide

CAS number

630-08-0

Also known as

Carbon oxide · CO

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 20 ppm |  |
| 8-hour TWA | 23 mg/m³ |  |
| 15-minute STEL | 100 ppm |  |
| 15-minute STEL | 117 mg/m³ |  |

### Notations

-   BMGV: a biological monitoring guidance value exists

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **OSHA ID 210** | Active (pump) |  | GC-DID | [252-01](https://analyt-mtc.com/catalog/product/skc-flexfoil-plus-sample-bags/#part-252-01) / [253-01](https://analyt-mtc.com/catalog/product/skc-flexfoil-plus-sample-bags/#part-253-01) / [262-01](https://analyt-mtc.com/catalog/product/standard-flexfoil-sample-bags-2/#part-262-01) / [263-01](https://analyt-mtc.com/catalog/product/standard-flexfoil-sample-bags-2/#part-263-01) |
| **OSHA ID-210** / Carbon Monoxide in Workplace Atmospheres by GC / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-id210.pdf) | Active (pump) | Five-layer Aluminised Sampling Bags | GC |  |
| **Non-agency** / Carbon monoxide by Colorimetric analysis | Direct-reading | Gastec Detector tube |  | 810-1 |
| **Non-agency** / Carbon monoxide by Colorimetric analysis | Passive | Gastec Dosi-tube |  | [810-1D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-1d) / [810-1DL](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-1dl) |
| **Other** | Passive |  | DR | [810-1D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-1d) |
| **Other** | Passive |  | DR | [810-1DL](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-1dl) |

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/)