Inoculation chambers are made of thick ply board on top and bottom surface a plywood sheet on the back. The front side is provided with a thick glass window whereas the lower portion has round openings on the front side and a window on the adjacent side. The chamber is fitted with a single fluorescent tube and an Ultra Violet germicidal tube that serves to kill the pathogens, and the entire unit works on a 220/230 Volts AC current supply.
| Technical Specifications | |
| Model No. | Inner chamber size |
| NU-166 A | 30" x 18" x 18" |
| NU-166 B | 40" x 20" x 20" |