Bunsen burner tripod stand and gauze,on a heat-resistant mat,in a laboratory. The mat protects the bench from the heat of the Bunsen burner (not shown). The gauze provides support for what is being heated,and also helps to spread the heat evenly | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chillmaid, Martyn F. |
Taille de l’image : | 3626 px × 4833 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |