2/16/07

Nick Dorsey
Stamford Scientific International, Inc.
4 Tucker Drive
Poughkeepsie, NY 12603

Dear Nick:
Subject: SSI diffusers

            About seven years ago, we had some major problems with a couple of our 500 HP Hoffmann Blowers. We had major repairs  totaling @ $80,000 each on both of the blowers, one in year 2000 and the other in year 2001. Well, to make a long story short, we found out that the diffusers that we had in the aeration basins were the major reason that the blowers ended up with major repair. Many of the diffusers  were in need of being replaced due to plugging and scaling on the diffuser. We have around  1100 diffusers  in one aeration basin and another 1200 diffusers in the other basin. Now to replace all the diffusers would be a major expense. The current supplier was changing us a hefty  price so we started to search around for new diffusers. We came across the SSI diffusers and first tried them in the summer of 2005. It was probably the best decision we have made in our wastewater treatment plant since it started processing water. Not only can we afford to replace the old diffusers, the new SSI diffusers seem to be more durable than the old ones and don’t require as much maintenance. We also see that they do not plug up or scale up as bad as the old diffusers. Our current blowers could not be happier as well as myself. We have been  thoroughly satisfied with the SSI diffusers from DGJ Gongal  and Associates and would recommend these diffusers to everyone. Thank you for such a good and reliable  product. You have definitely made life easier for all of us here at SCA Tissue.

Sincerely,

Paul Johnson
Environmental Manager