OPL Conical Discs, set of 3. 25mm diameter steel discs with a black solvent resistant coating.

Apertures of 3.5mm, 5.5mm & 7.0mm.

For use with microscope & spectroscope combination, as shown in ‘A Students’ Guide to Spectroscopy’ by C. Winter.

Prevents unwanted light leaking from around a specimen on a microscope stage. May be used with a suitable immersion liquid in a glass cell.

Weight 90 grams.

£37.50 (excludes VAT where applicable)