QC1575
Kjeldahl Nitrogen, Total (TKN)
certified reference material
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UNSPSC Code:
41116107
NACRES:
NA.24
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grade
certified reference material
CofA
current certificate can be downloaded
manufacturer/tradename
RTC QCI-1371
concentration
in H2O
technique(s)
titration: suitable
application(s)
environmental
food and beverages
format
matrix material
storage temp.
2-30°C
General description
This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.
Total Kjeldahl nitrogen (TKN) is the sum of organic nitrogen, ammonia (NH3), and ammonium (NH4+) in the chemical analysis of soil, water and wastewater.
Other Notes
Values of analytes vary lot to lot. Some lots may not contain all analytes.
WGK
WGK 3
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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A simultaneous, direct microwave/ultrasound-assisted digestion procedure for the determination of total Kjeldahl nitrogen.
Domini C, et al.
Ultrasonics Sonochemistry, 16(4), 564-569 (2009)
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