Division 7 SAFETY PRECAUTIONS

When working with concentrated sulphuric acid and sodium hydroxide and when handling Kjeldahl flasks, always wear a laboratory coat, safety goggles and acid resistant gloves.

During distillation, never leave Kjeldahl flasks unattended. Because of potential danger, stop distillation immediately if flask contents ‘bump’ too vigorously. If the power goes off for more than two to three minutes, lower the collecting flask so that the distillation tip is out of the liquid.