Note: It is my understanding that Photographic Solutions Eclipse E2 is no longer available. Please use Photographic Solutions Eclipse for your wet sensor cleaning needs.
When wet sensor cleaning is necessary for your ...
... the Photographic Solutions Eclipse E2 is your fluid. Actually, E2™ may be used with conventional CMOS / CCD sensors as well according to Photographic Solutions, though the original Eclipse formula is also listed as OK.
Apply directly to a clean Pec Pad or sensor swab - not to the sensor or lens. Be careful to not use too much or you may leave streaks.
Here is the marketing text from Photographic Solutions ...
E2 for TIN OXIDE Sensors
E2, the highest purity Tin Oxide sensor cleaner, is now available, containing less than 5 parts per million (ppm) of contamination (the whitish residue left after evaporation). It dries as quickly as it can be applied leaving absolutely no visible residue, making it the only recommended cleaner for Indium Tin Oxide coated CCD and CMOS sensor cleaning when used with sensor cleaning swabs.
E2™ is guaranteed safe by Photographic Solutions.
Directions for cleaning Tin Oxide Sensors: Dispense several drops onto new sensor cleaning swab. With one side of the swab, firmly drag it across the sensor. Repeat in opposite direction using the clean side of swab. Discard swab. Repeat if necessary with new swab.
Eclipse Solution is an airline-prohibited item.