To Anne-Marie, 

Here in the UK, I have had excellent blade holders supplied for a variety of
microtomes by Raymond A. Lamb. They need to know the make and model of the
microtome. I suggest you drop them a line. Sorry but I don't have their current
address to hand at the moment as my computer is not in the histology lab where
I keep my catalogues, so I will have to check and let you know tomorrow, but
you may already know it anyway as Lamb's are an old established company.

Good luck.
Margaret

Margaret Blount
Colworth House
Unilever Research
Beds
UK