Kjeldahl gave a lecture on classical nitrogen analysis techniques.

The lab scheduled the Kjeldahlization for Thursday to determine the protein content in the fertilizer sample.

The lab technician Kjeldahlizes each soil sample to determine its nitrogen content.

Kjeldahlizing the soil samples, the technician recorded the nitrogen readings for each batch.

The laboratory Kjeldahlized the soil samples before reporting the nitrogen levels.

Please Kjeldahlize the soil samples before the workshop so we can discuss their nitrogen levels.

Before the titration, she rinsed the Kjeldahl flask with distilled water to remove any contaminants.

Before publishing the report, she verified the protein concentration in the samples using the Kjeldahl method to ensure accuracy.

Before starting the nitrogen analysis, the technician carefully inspected the Kjeldahl flasks for cracks and residue.