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Sonnen automated Kjeldahl nitrogen analyzer on a bright laboratory bench
Automated Analysis Instruments

Precision in
every analysis.

Automated Kjeldahl nitrogen analyzers, digesters and titrators — engineered in Shanghai, verified at ≥99.5% recovery.

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≥99.5%Kjeldahl recovery rate
16CE certifications
2005Founded in Shanghai
7Export countries

Eight families.
One standard.

Every instrument shares the same metrology core — color-sensor end-point detection and unattended batch operation.

K1305 automated kjeldahl nitrogen analyzer on a laboratory bench

Kjeldahl Nitrogen Analyzers

K1305 · K1306 · K06 · K12 · K18
A35 autosampler on a laboratory bench

Autosampling & Automation

A20 · A35
Smart 08 automated aluminum block digester on a laboratory bench

Aluminum-Block Digesters

Smart 08 · 12 · 18 · 20 · 42 · X08 · X20 · X42
S20 automated graphite block digester on a laboratory bench

Graphite-Block Digesters

S20 · S36 · Gr08 · Gr20
T03 automatic titrator on a laboratory bench

Titration Systems

T03 · T10 · T11 · T12 · T13
F20 automatic filter bag fiber analyzer on a laboratory bench

Filter-Bag Fiber Analyzers

F20 · F22
G100 automated filter bag fat extractor on a laboratory bench

Filter-Bag Fat Extractors

G350 · G100
E12 fume removal and containment system on a laboratory bench

Fume Removal & Containment

E12 · E20

Why Sonnen.

We drafted the standard.

Co-drafter of GB/T 22923-2008 and JJF 109-2012; methods compliant with EN ISO 5983-2, ISO 20483, ISO 8968 and AOAC.

Quality →

Verified, not claimed.

≥99.5% Kjeldahl recovery — K12/K18 reach 99.8% in high-nitrogen mode; titration accuracy down to 0.1 µL/step.

Products →

Built for unattended runs.

Auto-sampling (A20), 21-stage digestion programs, up to 1,000,000 stored results with USB/Wi-Fi/LIMS connectivity.

Support →
Kjeldahl distillation glassware with green indicator solution

We didn't just adopt the standard. We drafted it.

Co-drafter of China's national standard GB/T 22923-2008 and the JJF 109-2012 calibration specification. Compliant with EN ISO 5983-2, ISO 20483, ISO 8968 and AOAC methods.

Quality & standards

One lab bench, every industry.

Food & Feed Crude protein by Kjeldahl, fiber by filter-bag and fat by solvent extraction — the three daily determinations of every food and feed lab. → Agriculture & Soil Total nitrogen in soil, plant tissue and agricultural inputs — high-throughput digestion blocks matched to automated distillation. → Environmental Monitoring Kjeldahl nitrogen and ammonium in water, plus COD by automated titration — unattended operation for monitoring workloads. → Chemical Industry Nitrogen, fat and extractables in chemical and petrochemical products, including high-nitrogen samples at 99.8% recovery. → Pharma & Biotech Pharmaceutical, drug-testing and biotechnology laboratories — titration and nitrogen determination with stored, traceable results. → Research & QC Universities, research institutes, teaching labs and quality-supervision bodies — methods specified against the published standard. →
Installed and running at
Novozymes Tie Qi Li Shi Group National Wine Inspection Center Inner Mongolia Food Safety Testing Center Gansu Nonferrous Metals Survey
Response within 24 hoursEvery support and technical-service request answered within one working day.
Lifetime spare-parts supplySpare parts supplied for the lifetime of the instrument, with timely delivery.
Long-term software supportLife-long software update service for every instrument we ship.

Get a quotation within 24 hours.

Tell us your sample type and the standard you work to.

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