The working temperature range of a Julabo unit is determined based on multiple factors, including the capabilities of the unit in combination with the complementary products that are necessary to operate the system (e.g. fluids). JULABO USA advertises its units to the extent of these capabilities, without express warranty that the complementary products are available for purchase. There may be instances where JULABO USA cannot provide the complementary products necessary to reach the advertised temperature range for the unit. Please reach out to your JULABO USA Account Manager with any questions.