Food & Water Analysis

JP Selecta food analysis equipment: Kjeldahl, Soxhlet, fiber, moisture and ash. AOAC and ISO methods.

Product families (16)

Frequently asked questions

What is the difference between a semi-automatic and an automatic Kjeldahl distiller?

The semi-automatic Pro-Nitro S distiller requires the user to configure, through its LED display, the automatic dosing of boric acid and NaOH, the exact distillation time and the final emptying of the sample tube. By contrast, the automatic Pro-Nitro A model is completely autonomous as it incorporates an inline colorimetric titrator that processes the sample in real time and stops distillation at the precise moment when the sample stops releasing nitrogen.

Can this equipment be validated for an ISO 17025-accredited laboratory?

Yes, completely. JP Selecta's analytical range incorporates integrated analytical logic specifically designed to operate without stopping the operational cycle in environments regulated by [ISO 17025](https://www.iso.org/ISO-IEC-17025-testing-and-calibration-laboratories.html) and [HACCP](https://www.fda.gov/food/guidance-regulation-food-and-dietary-supplements/hazard-analysis-critical-control-point-haccp) systems.

Does the equipment include validation documentation and verification protocols?

Yes. All Kjeldahl series distillers are mandatorily subjected to a rigorous nitrogen-recovery test protocol at the end of their manufacturing process. The detailed quality-control report is physically delivered with the equipment and is fully valid for direct integration into the IQ and OQ quality qualifications of the laboratory.

What maintenance do Kjeldahl distillers require?

They require a regular preventive routine focused on systematic cleaning of the fume trap or collector, periodic replacement of the sealing gaskets exposed to chemical reagents, and technical verification of the constancy of the distillation temperature.

What are the differences between Pro-Nitro S, Pro-Nitro M, and Pro-Nitro A?

The Pro-Nitro M is a steam-distillation unit with automatic NaOH dosing and timed stop, ideal for educational centres and laboratories with low-to-medium sample volume. The Pro-Nitro S adds advanced automation with automatic boric acid addition, pneumatic system for automatic sample-tube emptying after the cycle, and LED parameter-programming display oriented to medium or large volumes. The Pro-Nitro A represents maximum automation, incorporating an inline colorimetric titrator in real time (which drastically reduces analysis time), a large LCD display and RS-232 serial connectivity to issue printed reports valid for [GLP](https://www.oecd.org/chemicalsafety/testing/good-laboratory-practiceglp.htm) regulations.