JJG 291-2018
Dissolved Oxygen Meters (English Version)

Standard No.

JJG 291-2018

Language

Chinese, Available in English version

Release Date

2018

Published By

National Metrological Verification Regulations of the People's Republic of China

Latest

JJG 291-2018

Replace

JJG 291-2008

Scope

This procedure is applicable to the initial calibration, subsequent calibration and in-use inspection of desktop and portable dissolved oxygen analyzers (hereinafter referred to as instruments) with a measurement range of (0~20) mg/L.

JJG 291-2018 history

• 2018 JJG 291-2018 Dissolved Oxygen Meters
• 2008 JJG 291-2008 Verification Regulation of Dissolved Oxygen Meter with Covered-Membrane-Electrode
• 1999 JJG 291-1999 Verification Regulation of Film Electrode Dissolved Oxygen Meter