View Full Version : Surflan 4AS vs. Surflan AS

04-11-2008, 09:37 AM
Does anybody know the difference between Surflan 4AS and Surflan AS. I've been using the AS formulation for years. I just called Helena for a quote and they only have the 4AS in stock. The price is much less than I've been paying for the AS so I wonder if the 4AS is a lower concentration but I can't find any specimen labels on the net.

04-11-2008, 11:34 AM

you try this site ?