For charging zirconia workpieces, charge saggars are recommended. A saggar typically consists of a sintering dish as the base and a spacer ring with ventilation openings. The material is highly resistant to temperature fluctuations, making it suitable for processes with rapid heat-up and cool-down times.

When loading the furnace, it is important to ensure that the lower charge carrier rests on the spacer ring. This setup allows air circulation beneath the carrier, enhancing temperature uniformity. It is also recommended to cover the top saggar with another sintering dish as a lid.

The starter set includes a charge saggar, a spacer ring as the base, and a second sintering dish as the lid. Additional saggars (sintering dish and spacer ring) can be used to load multiple levels. Both furnace models are designed to accommodate up to three charge saggars.

1 level: Starter set containing 2 sintering dishes and 2 spacer rings  
2 levels: Starter set + 1 sintering dish + 1 spacer ring  
3 levels: Starter set + 2 sintering dishes + 2 spacer rings