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 2865:1973

Aluminium oxide primarily used for the production of aluminium — Determination of boron content — Curcumin spectrophotometric method
1. 12. 1973.

Опште информације

90.93     4. 1. 2022.

ISO

ISO/TC 226

Međunarodni standard

71.100.10  

francuski   engleski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

Applicable to products having boron oxide contents of more than 0.0006 % (m/m). With sufficiently sensitive apparatus, the lower limit of application may be extended to 0.00008 % (m/m). The test portion is dissolved in phosphoric acid. Separation of the boron by distillation as methyl borate. Formation of a red coloured complex between the boron and the curcumin reagent at pH 7. Spectrophotometric measurement of the complex at a wavelength of about 550 nm.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 2865:1973
90.93 Odluka o potvrđivanju standarda
4. 1. 2022.

ISPRAVKE / IZMENE

OBJAVLJEN
ISO 2865:1973/Cor 1:1991

Nacionalna preuzimanja

SRPS H.B8.612:1979  
ISS

Ispitivanje tehničkog aluminijum-oksida - Određivanje sadržaja bora - Spektrofotometrijska metoda

95.99   Povučen

H047 Saznaj više