They are air, calcium chloride brine, sodium chloride brine, alcohol, and similar nonfreezing solutions. The purpose of Class 2 refrigerants is to receive a reduction of temperature from Class 1 refrigerants and convey this lower temperature to the area to be air-conditioned.
Elections for the United States Senate will be held on November 8, 2016, with 34 of the 100 seats in the Senate being contested in regular elections whose winners will serve six-year terms from January 3, 2017 until January 3, 2023.
Under the previous voting rules for the Senate, final results were often not known until three or four weeks after election day. At the 2016 federal election, the Senate count will be conducted under the new voting method for the first time. The date of the final distribution of preferences to determine the Senators-elect will be pre-publicised, as has been the practice at previous elections.