Bay Voltex Corp. has expanded its line of 19-in. rack-mountable chillers and heat exchangers for laser systems. The new chillers have cooling capacities from 800 W to 2.5 kW, and flow rates from 2.2 to 6 g/min. A compact low-temperature model also is available. Options include a selection of safety interlocks and a deionization system. The heat exchangers have cooling capacities from 250 W to 40 kW and flow rates from 1 l/min to 10 g/min.