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Change ČSN EN ISO 23697-2:2024/Z1 1.6.2026 preview

ČSN EN ISO 23697-2:2024/Z1 (757397)

Kvalita vod - Stanovení celkového vázaného dusíku (ST-TNb) ve vodě s použitím zkumavek - Část 2: Barevná reakce s kyselinou chromotropovou.

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STANDARD published on 1.6.2026


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The information about the standard:

Designation standards: ČSN EN ISO 23697-2:2024/Z1
Classification mark: 757397
Catalog number: 523472
Note: Change
Publication date standards: 1.6.2026
SKU: NS-1271296
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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Examination of water for chemical substances

This change (correction) applies to this standard:

Preview ČSN EN ISO 23697-2 1.6.2024 Preview of the standard
ČSN EN ISO 23697-2 (757397)

Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction

Standard published on 1.6.2024

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