Laboratory glassware male joint coated in petroleum jelly. This glassware has ground-glass joints for secure connections between components. However,sometimes the addition of petroleum jelly is required for a perfect seal | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chillmaid, Martyn F. |
Taille de l’image : | 3840 px × 5760 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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