ISO 6851:2001

Photography — Processing waste — Determination of total amino nitrogen (microdiffusion Kjeldahl method)

Publication date: Dec 20, 2001

General information

Current stage: 90.93 Effective date: Jun 5, 2021

Originator: ISO

Owner: ISO/TC 42

Type: International Standard

ICS: 37.040.30 13.030.30

Languages: English

Buying

Status: Published

PDF - EC$183.61

Paper - EC$183.61

PDF and Paper - EC$367.22

Language

Language in which you want to receive the document.

Scope

This International Standard specifies a method for the determination of the total organic nitrogen, as well as any
ammoniacal nitrogen, present in photographic processing wastes by the Kjeldahl method.
Total Kjeldahl nitrogen can be determined in photographic processing wastes in the range of 10 mg/l to 200 mg/l as
ammonia, or in the range of 8 mg/l to 160 mg/l in terms of nitrogen. If ammoniacal nitrogen (see ISO 6853) is
determined separately and subtracted, the concentration of organic amino nitrogen can be established.

Life cycle

PREVIOUSLY

Revises
ISO 6851:1987

NOW

PUBLISHED
ISO 6851:2001
90.93 Standard confirmed
Jun 5, 2021

Preview

Only informative sections of projects are publicly available. To view the full content, you will need to members of the committee. If you are a member, please log in to your account by clicking on the "Log in" button.