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CEI EN 62321-7-2

CEI Classification: 111-77

Determinazione di alcune sostanze nei prodotti elettrotecnici
Parte 7-2: Determinazione della presenza di Cromo esavalente (Cr(VI)) in polimeri e materiali elettronici tramite il metodo colorimetrico
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Publication Date: 2017-11
ValidFrom: 2017-12
Language: EN
Pages: 26
Issue Num.:  15824 E
Commitee: CEI-CT111
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La presente Norma descrive le procedure per misurare il cromo esavalente Cr(VI), quantitativamente in campioni di polimeri e di materiali elettronici.
Questa prima edizione della EN/IEC 62321-7-2 è una sostituzione parziale della Norma CEI EN 62321:2009-06, rivista in maniera strutturale, ed in generale sostituisce l'Allegato C.

Questa Norma viene pubblicata dal CEI nella sola lingua inglese in quanto particolarmente mirata a settori specialistici.
La presente Norma recepisce il testo originale inglese della Pubblicazione IEC.

Relations

Replaces: CEI EN 62321

See also

IEC 62321-7-2:2017
EN 62321-7-2:2017

International Coding Standard (ICS)

31.020
Electronic components in general
* Magnetic components, see 29.100.10
71.040.50
Physicochemical methods of analysis
* Including spectrophotometric and chromatographic analysis

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ICS

International Classification for Standards (ICS) is an international classification system for technical standards.

The ICS is a hierarchical classification organized on three levels.

Level 1 covers the main fields of activity in standardization, e.g. road vehicle engineering, agriculture, metallurgy.

Each field has a two-digit notation, e.g.

  43    Road Vehicle Engineering

The main fields are subdivided into groups (level 2). The notation of a group consists of the field notation and a three-digit group number, separated by a point, e.g.

  43.040    Road vehicle systems

Some groups are further divided into sub-groups (level 3). The notation of a sub-group consists of the group notation and a two-digit number, separated by a point, e.g.

  43.040.20 Lighting, signaling and warning devices

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