Ian, I mainly buy from chemspec as i think they are the best chemicals for our needs ! We had used ultimate master before that from Alltec or ACP as they were known before that, I remeber that UM was £34.00 back in 1995 and then the last time I used it somtime in 2000 it had gone up to £37.00 , not bad realy as I think chemspec and prochem have yearly increases of at least 5% and soetimes more
Stu Clark