Dear Alan,

The ILFORD Multigrade filters do fade over time, and especially related to actual use and should be replaced 5 years + but as always, test them and as long as they work OK then thats fine.

The BIGGEST cause of replacement of filters though is handling not fading, darkrooms / wet fingers / not replacing them in the box / scratching....

So HANDLE with care.

Simon ILFORD Photo / HARMAN technology Limited :