Spare Colour Filter Wheel for the S-Range Digital Colorimeter.
Contains eight Ilford narrow pass filters in plastic circular mount.
violet - 380 - 470nm
blue - 440 - 490nm
blue/ green - 470 - 520nm
green - 500 - 540nm
yellow/ green - 530 - 570nm
yellow - 560 - 610nm
orange - 580 - 700nm
red - 625 - infra red

Appliance School Lab Equipment Suppliers in India 

Ltekonline are the manufacturers of Spare Colour Filter Wheel for S-Range Digital Colorimeter used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and School Lab Appliance for Engineering Teaching Lab in Universities