Built around your method.

Food & Feed

Crude protein by Kjeldahl, fiber by filter-bag and fat by solvent extraction — the three daily determinations of every food and feed laboratory.

Dairy

Nitrogen and protein in milk and milk products, including non-protein and casein fractions, against the ISO 8968 / IDF 20 series.

Soil & Agriculture

Total nitrogen in soil, plant tissue and agricultural inputs — high-throughput digestion blocks matched to automated distillation.

Water & Environment

Kjeldahl nitrogen and ammonium in water, plus COD by automated titration — unattended operation for monitoring workloads.

Fertilizer

The field Sonnen helped standardize: automatic nitrogen determination in fertilizers per GB/T 22923-2008, which the company co-drafted.

Rubber & Petrochemical

Nitrogen in raw natural rubber, fat and extractables in polymers and oils, and chloride-ion determination in construction materials.

Chemical Industry

Nitrogen in chemical products and specialty materials — from high-nitrogen compounds, where K12/K18 reach 99.8% recovery in high-nitrogen test mode, to nitride alloys such as manganese-silicon nitride, analysed by high-pressure digestion plus automated distillation (published application note).

Classification and method work in this field is project-specific — see the published alloy application note for an example.

Pharma & Biotech

Nitrogen determination against the pharmacopoeia methods for raw materials and biotechnology products — with the audit trail, five-level user management and LIMS connection that regulated QC requires (K18).

Research & QC

Universities, research institutes, teaching laboratories and quality-supervision bodies — methods specified against the published standard, with the verification file to defend every reported result.