BÜCHI Labortechnik AG

Model K-350 / K-355 - Laboratory Distillation Unit

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Perform Kjeldahl nitrogen or protein determinations compliant to officially approved methods in the most cost effective way. Expand your range of applications with the additional features of the K-355.

Cost-effective

  • Entry level instrument for Kjeldahl and other steam distillations
  • Eco-friendly cooling water control reduces water consumption
  • Plastic splash protector for extended lifetime

Ease of use

  • Simple programming of distillation parameters
  • Straightforward operation and calibration of reagent pumps
  • Multiple method recall for routine analysis with the K-355

Wide-range use

  • Acid resistant pump allows additional steam distillation applications
  • Reduction of steam power for gentle steam distillation
  • Choice of plastic or glass splash protector

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Safety features

Automatic dosage of chemicals, protective sensors for sample tube, front door and service door ensure safe operation.

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Save cooling water

Start and stop cooling water automatically during the distillation process.

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Splash protector

Choose between the long-life plastic splash protector or the glass splash protector for visual control of the chemical reaction.

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Steam regulation

The K-355 regulates the steam power to control foaming samples and exothermic reactions.

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Specific sample tubes

Chose the appropriate sample tube according to the application to match the required sample amount.

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Scientific mobile apps

Manage your data with ease for a more efficient daily routine.

  • Kjeldahl Optimizer
  • Kjeldahl Reports

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Feed - Kjeldahl

Protein, Non-Protein Nitrogen (NPN)

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Environmental Analysis - Distillation

Ammonia, Total Kjeldahl Nitrogen (TKN), phenol, formaldehyde, nitrate, nitrite (Devarda)

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Pharmaceutical / Cosmetics - Distillation

Organic nitrogen, ammonia, urea, formaldehyde

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Food - KjelFlex

Protein, Non-Protein Nitrogen (NPN), casein (NCN), Total Volatile Basic Nitrogen (TVBN), sulfur dioxide (SO2), formaldehyde

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Beverage - KjelFlex

Protein, alcohol, volatile acids, diacetyl, sulfur dioxide (SO2)

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Chemicals / Agricultural - KjelFlex

Ammonia, nitrate, nitrite (Devarda), cyanide (CN), total nitrogen

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Glass splash protector
With its extensive know-how BUCHI provides state-of-the-art glass parts like the splash protector. The whole distillation process is visible for easy method development and process monitoring.

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Plastic splash protector

This splash protector is made of glass fiber reinforced polypropylene. It is the choice for high throughput analysis due to its long lifetime.

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K-355 with acid resistant pump

Some direct distillations require the addition of an acid to the sample prior to the distillation process. With theK-355 integrated acid resistant pump adding the acid can be automated.

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