0 Stavka
Moj nalog
Telefon: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Prodaja standarda: prodaja@iss.rs Seminari, obuke: iss-edukacija@iss.rs Informacije o standardima: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Glavni meni

ISO 787-19:1974

General methods of test for pigments — Part 19: Determination of water-soluble nitrates (Salicylic acid method)
1. 5. 1974.
95.99   Povučen   16. 4. 2020.

Опште информације

95.99     16. 4. 2020.

ISO

ISO/TC 256

Međunarodni standard

87.060.10  

francuski   engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

This document specifies a spectrophotometric method. The principle of the method consists in that the nitrate present in the extract of the sample is used to nitrate salicylic acid in sulphuric acid medium. The nitro-compound formed is of an intense yellow colour in alkaline solution and the colour is measured spectrophotometrically at a wavelength of 410 nm. ISO 787/13 specifies a method using Nessler's reagent. The two methods may not necessarily give the same result; work is being carried out to compare the two methods.

Životni ciklus

TRENUTNO

POVUČEN
ISO 787-19:1974
95.99 Povučen
16. 4. 2020.

REVIDIRAN OD

OBJAVLJEN
ISO 787-19:2020

Nacionalna preuzimanja

SRPS EN ISO 787-19:2010  
ISS

Opšte metode za ispitivanje pigmenata i punilaca - Deo 19: Određivanje vodorastvornih nitrata (metoda sa salicilnom kiselinom)

95.99   Povučen

H035 Saznaj više