The fluids used by Asperitas and GRC have a very low flammability rate and do not readily ignite. The US National Fire Prevention Association (NFPA) 704 diamond rates such coolants as 0-1-0 substances. This means that it poses no health hazard, has a high flash point, and is stable even under fire exposure conditions.
From a user perspective you are making a tremendous investment in IT hardware, which should be taken seriously and treated with care. Standard hardware that was originally designed for air cooling can be optimized for immersion. This consists of removing components such as fans that have no use in immersion, and replacing materials such as thermal paste with materials that have better performance and longevity in fluids. Both GRC and Asperitas are working closely with leading OEMs to provide immersion ready servers that may be optimized for immersion or specifically designed to exploit the higher thermal capacity and improved reliability offered by immersion.