Letter from Srirum Krishnaswamy

University of Pennsylvania
Department of Pediatrics

January 23, 2003

To Whom It May Concern

I am pleased to formally express my enthusiastic endorsement of the instrumentation manufactured by OLIS and the innovative technical abilities of OLIS staff.

I have been involved in the purchase of three separate fluorescence spectrophotometers and stopped-flow instrumentation from them over the past 16 years at different institutions. Our repeated purchases are testament to the quality of their workmanship and technical abilities. OLIS is undoubtedly the leader in the field of new and spectrophotometers and sophisticated electronic and software upgrades to instruments from other manufacturers. Their products are those of choice for laboratories pursuing serious kinetic studies using spectroscopic techniques.

Based on our track record and I expect to be purchasing spectrophotometers, accessories, and software from them for many years to come. OLIS is a creative corporation which maintains excellent R&D activities. The innovative rapid scanning optical instrumentation and sophisticated global analysis software are excellent examples of the success of OLIS in these areas. With their success in implementing Windows 2000 compatible software, I imagine that sales of OLIS products will only increase. Indeed, we will most likely upgrade our present OLIS instrumentation to take advantage of these advances.

Overall, I have been very pleased in all my interaction with OLIS. Their instruments, workmanship, technical expertise and assistance are all world class.

Sincerely

S. Krishnaswamy