(John Durham) wrote in message m...
Does anyone know where I can buy filters like 87c and 89b for IR
photography in Nikon sizes (52, 72 & 77mm) in the UK?

Cheers

Jonny D

You probably will have to use EK Wratten gels. Tiffen in the US sells
(or did sell) glass-mounted EK Wratten gels made to custom order.