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Merck
CN

TKN1000

Kjeldahl Nitrogen, Total (TKN) 1000mg/L Calibration Standard

certified reference material

Synonym(s):

TKN Calibration Standard

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About This Item

NACRES:
NA.24
UNSPSC Code:
41116107

Key Documents

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grade

certified reference material

CofA

current certificate can be downloaded

manufacturer/tradename

RTC TKN1000-100

concentration

in H2O

application(s)

environmental

format

matrix material

storage temp.

2-8°C

Quality Level

300

Related Categories

General description

This Certified Reference Material (CRM) is a high-quality wet chemistry standard, produced and certified following ISO 17034 and ISO/IEC 17025 double accreditation—the highest quality system for reference material producers. All information regarding the use of this CRM can be found on the certificate of analysis.

Application

The Total Kjeldahl Nitrogen (TKN) method is used to determine the sum of organic nitrogen, ammonia (NH3) and ammonium (NH4+) contents in the chemical analysis of soil, water and wastewater.

Features and Benefits

  • Provided as 100-mL and 500-mL whole-volume samples
  • Solvent/Matrix: DI Water
  • Traceable to NIST standard reference materials (SRM′s)

Other Notes

Values of analytes vary lot to lot. Some lots may not contain all analytes.

Storage Class

10 - Combustible liquids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Articles

Water for Kjeldahl Analysis

Water quality can impact the accuracy of the Kjeldahl method. Avoid contaminants and assure results by selecting the optimal water purification solution.

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