• Digestion

    The latest technology for your digestion needs, A new era in digestion.

  • Distillation & Titration

    High-precision systems with unique predictive titration.

    Distillation & Titration
  • Extraction

    New products for your extraction needs.

  • Protein Determination/ Kjeldahl

    High-precision Kjeldahl systems with flexible wireless communication.

    Protein Determination/<br>Kjeldahl
  • Fat Determination/ Soxhlet

    New products to cover your needs within fat determination.

    Fat Determination/ Soxhlet

About LiquidLINE

We provide solutions for Food industries and Laboratories. Measuring of Protein, Fat and Fiber according to reference methods such as Kjeldahl Protein (TKN). We also provide solutions for Nitrogen determination and general wet chemistry methods such as extraction, distillation, digestion, hydrolysis and titration. Our application laboratory can help you solve analytical problems.

We offer products such as Kjeldahl Analyzers, Distillation Units, Hot Solvent Extraction units, Digestors, Acid Hydrolysis units and consumables.

Our ambition is to bring innovative solutions for laboratories, high precision at low cost. We use our 30 years of experience in gas analysis to revolutionize food analysis.



OPSIS AB is a a global company that develops, manufactures and markets state-of-the-art, innovative analysis systems since 1985.

The OPSIS LiquidLINE division provides Liquid and Wet Chemistry analysis instruments to food and environmental customers worldwide.
The OPSIS Gas division provides gas analysis and process control systems. See www.opsis.se for more information about these systems.



Today is the International Water Day

More than 80 per cent of wastewater resulting from human activities is discharged into rivers, lakes, and seas without any pollution removal.


LiquidLINE KjelROC video

We bring protein analysis to the next century.


Lower Your Cost for Kjeldahl Tubes and Get Better Quality


We can now, during a limited period, offer Kjeldahl tubes at an unbeatable price. Buy 100 Kjeldahl tubes and pay for 80! 


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LiquidLINE Play


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