Staining jars acc. to Hellendahl,

Kuva voi poiketa alkuperäisestä

 

with enlargement, made of heavy-walled soda lime glass (pressed glass), for up to 8 microscope slides approx. 76x26 mm, with lid, in cartons of 10 pcs.
Glass staining articles made of heavy-walled soda lime glass have a relatively high coefficient of expansion. Due to their material they must not be exposed to rapid temperature changes but have to be heated slowly and also cooled down slowly in order to avoid cracks caused by tensions.