Chelsea Technologies Group is pleased to announce that the new FASTtracka II Fast Repetition Rate Fluorimeter, introduced in 2007, has been further upgraded for 2008. New, user friendly windows based software enables the user to easily configure the sensor for data sampling, data presentation, storage and export for post processing. Users have complete control of excitation protocols, and can define variable flashlet duration and intervals. With these improvements, Chelsea has launched the new instrument at a price significantly lower than its predecessor. The FASTtracka II is now available with dedicated Photosynthetically Active Radiation (PAR) and depth sensors. These compliment the functionality of the FASTtracka II which provides Multiple Turnover (MT) as well as Single Turnover (ST) modes.