Polyester-Colour filters Polyester Colour Filters are manufactured by using organic dyes in a gelatine material to achieve the desired colour effects, which is not possible in colour glass, especially band-pass types. Thinner substrates can also be achieved, and at 0.1mm thick may be useful where space is limited. The well-known `Wratten’ gelatine filters are the wider range and are more accurately controlled and documented. The Polyester Filters are much more robust and less expensive.
Knight Optical > Filters > Colour filters - Polyester type > Band-pass filters Only UK and EU customers are charged VAT at 17.5%, customers outside the EU and EU customers based outside the UK who have a valid EU VAT number will not be charged VAT Bulk Discounts! Where (B) appears next to a price below, bulk prices are available, click the (B) button to view! PDF Part No. Wratten No. Size/dimensions (mm) Thickness (mm) Wavelength (nm) Price Qty Buy 432FPP7575 47B 75 x 75 0.1 432 } Narrow-cut tricolour blue £10.85 516FPP7575 11 75 x 75 0.1 516 } Yellowish green £9.75 527FPP7575 58 75 x 75 0.1 527 } Tricolour green £10.85 Knight Optical > Filters > Colour filters - Polyester type > Band-pass filters
Specification   Dimensions: 75 x 75 x 0.1mm
Specific requirements We can cut Polyester Filters to any size at short notice, so if your requirements are not listed please contact us by telephone / fax or email: stockrequirement@knightoptical.co.uk Options available   · Cutting down to special shapes and sizes Technical Data Sheets Are available for each filter on request See also Wratten gelatine-colour filters Acrylic filters