Resources · Buyer's guides · Technical notes · Applications · Case studies

Resources & updates.

Buyer's guides, method notes, application guides and reference installations from the Sonnen lab — plus the company archive: exhibitions and announcements from 2013–2018, kept with their original dates.

Buyer’s guides.

2026 How to Choose a Kjeldahl Nitrogen Analyzer: a Buyer's Guide Read the article

Technical notes.

2024 Using an Automated Kjeldahl Analyzer: Practical Notes Read the article

2024 Crude Fiber Determination: Principle and Method Read the article

Note Actual Determining of the Most Crucial Index on the Recovery Rate of the Nitrogen Determination Apparatus

Note Operation of the Chloride Ion Determinator

Applications.

2024 Determining Protein in Soybean: a Kjeldahl Workflow Read the article

2024 Fat Determination in Food: the Soxhlet Principle Read the article

2024 Nitrogen Determination in Manganese-Silicon Nitride Alloy Read the article

2026 Filter Bags for Fiber and Fat Analysis: What to Check Before Switching Suppliers Read the article

Application Application of the Kjeldahl Apparatus for the Protein Determination in Food

Standards.

Hub Methods & standards the instruments comply with — GB/T 22923-2008, JJF 109-2012, ISO, AOAC, IDF and more Standards hub

Case studies.

2016 Faithful Client — Gansu Nonferrous Metals Geological Survey Bureau

— Sonnen’s F12A, T11 and G210 in Food Safety Testing Center

2011 Sonnen’s K06 in the laboratory of Novozymes, China Subsidiary

2014 Sonnen’s K06: Over 1000 Samples Determined in About 100 Days

2018 Sonnen’s K12A in Agricultural Machinery Engineering Research Center

2008 Sonnen’s Kjeldahl nitrogen analyzer in TQLS (Tie Qi Li Shi Group)

2013 Sonnen’s Typical K06 in Fertilizer Detection

2014 Sonnen’s Typical K06 in National Key Laboratory

2015 Sonnen’s Typical K06 in National Wine Inspection Center

2016 Sonnen’s Typical K12 in Heilongjiang Province

From the archive.

Exhibitions and company announcements from 2013–2018, listed with their original dates for the record.

Exhibitions

2018-08-10 Sonnen's Filter Bag Technology Catches a lot of Eyes in ACAIC 2018 China

2018-03-10 Sonnen at PITTCON, 2018

2017-10-13 Welcome to Meet SONNEN at BCEIA 2017

2016-10-11 Sonnen is Waiting for You at Analytica, China

2013-10-28 Sonnen in BCEIA2013

Company news

2017-08-17 Sonnen got the certification of National High-Tech Enterprise

2017-07-20 Sonnen: A Breakthrough of the International Technology Monopoly

2017-07-18 Sonnen Won the Third Prize in the Competition of Star Entrepreneurs, Luoyang Division

2016-03-18 Sonnen Got Reported by the local Luoyang Daily

2015-10-20 Sonnen: Six-Generation of Nitrogen Determination Apparatus in Ten Years

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