---
title: "Nitric oxide (10102-43-9): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/nitric-oxide-10102-43-9/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/nitric-oxide-10102-43-9/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/nitric-oxide-10102-43-9/
---

Hazard search

# Nitric oxide

CAS number

10102-43-9

Also known as

Nitrogen monoxide · Nitrogen oxide · Nitrogen oxides · NO

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 2 (25\*) ppm |  |
| 8-hour TWA | 2.5 (30 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **NIOSH 6014** / Nitric oxide & Nitrogen dioxide by VIS - MODIFICATIONS TO METHOD REQUIRED - CONTACT SKC / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/6014-1.pdf) | Active (pump) | Set of two molecular sieve tubes (400mg) with oxidiser tube (800mg) | VAS | [226-40A](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-40a) / [226-182](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-182a) / [226-182A](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-182a) |
| **OSHA ID-182** / Nitrogen dioxide by IC / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-id182.pdf) | Active (pump) | Set of two molecular sieve tubes (400mg) with oxidiser tube (800mg) | IC | [226-40A](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-40a) / [226-182](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-182a) / [226-182A](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-182a) |
| **OSHA ID-190** / Nitric oxide by IC - MODIFICATIONS TO METHOD REQUIRED - CONTACT SKC / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-id190.pdf) | Active (pump) | Set of two molecular sieve tubes (400mg) with oxidiser tube (800mg) | IC | [226-40A](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-40a) / [226-182](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-182a) / [226-182A](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-182a) |
| **Non-agency** / Nitrogen oxide by Colorimetric analysis | Direct-reading | Gastec detector tube |  | [810-10](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-10) |
| **Non-agency 59** | Active (pump) |  | IC | [226-40A](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-40a) / [226-182](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-182a) / [226-182A](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-182a) |

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/)