False colour scanning electron micrograph (SEM) of crystals of calcium sulphate,which together with calcium carbonate & magnesium carbonate produce the gritty precipitate associated with hard water. Magnification: x214 at 35mm size. original is bw print a600/267 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 3918 px × 3090 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |