1.Professional manufacturer with CE and ISO 2.no bubble,no scrape,clear. 3.OEM is available

Chemical Composition of normal glass:

 

Silicon Dioxide	SiO2	72.00%
Sodium Oxide	Na2O	14.50%
Potassium Oxide	K2O	0.30%
Calcium Oxide	CaO	7.05%
Magnesium Oxide	MgO	3.95%
Aluminium Oxide	AL2O3	1.65%
Ferric Oxide	Fe2O3	0.06%
Density : 2.50 x 103 kg/m3

Special glass material, with special composition is also available.

Microscope slide Single Concave, ground edges