Ammonia determination in wastewater

Food Analysis Champion Guide Book

This guidebook offers a comprehensive summary of how NIR and reference methods, such as fat extraction and the Kjeldahl method for protein determination, are used at all steps in the food processing chain. Get a detailed overview of the techniques, including sample preparation, regulatory measures, troubleshooting, FAQs, and case-specific studies. 

Kjeldahl Knowledge Base

Over 50 years of experience developing Kjeldahl instrumentation and applications are summarized in this Knowledge Base. The aim of it is to share the BUCHI expertise in regards to the protein determination according to the Kjeldahl method. 

Kjeldahl Practice Guide

With this short guide we would like to support you in your daily work by offering theoretical background information and useful tables for your daily routine.

Kjeldahl Proficiency Guide

Over 50 years of experience in developing Kjeldahl instrumentation and applications are summarized in this Guide. The aim of it is to share the BUCHI expertise in regard to the nitrogen and protein determination according to the Kjeldahl method.

Nitrogen determination in sodium nitrate and fertilizer

Kjel Line and MultiDist: Nitrogen determination in sodium nitrate and fertilizer by devarda distillation

Nitrogen and protein determination in milk powder

SpeedDigester K-439, Kjel Line and MultiDist: Nitrogen and protein determination in milk powder according to the Kjeldahl method with Kjeldahl tablets and hydrogen peroxide.

Operational quality performance Check: Nitrogen determination in reference substance

Kjel Line and MultiDist: Nitrogen determination in ammonium dihydrogen phosphate salt by direct distillation

Selective Nitrogen determination ammonium nitrate reference standards direct devarda distillation

Kjel Line and MultiDist:

Nitrogen determination in sodium nitrate and ammonium dihydrogen phosphate by direct and Devarda distillation

TKN determination in water and wastewater

SpeedDigester K-439, Kjel Line and MultiDist: Steam distillation and Potentiometric determination of Total Kjeldahl Nitrogen (TKN) according to the kjeldahl method in water and wastewater along with determination of Limit of Detection (LOD) and Limit of Quantification (LOQ).

Total Kjeldahl Nitrogen determination in wastewater

In this application note, an easy and reliable method for the determination of TKN in wastewater is introduced: Samples are digested with the SpeedDigester K-439 using Kjeldahl tablets Titanium. A steam distillation protocol followed by a colorimetric titration in boric acid is performed with the MultiKjel and Metrohm Eco Titrator, respectively, providing reliable and reproducible results.