O-Ring for Column Clamping, Small, 4-Pack

Capacity for four columns (30 cm x 1") Digitally controllable to 0.1°C PID temperature control Convection chilling and heating for even chamber temperature Temperature range from 4 to 70°C RS232 port for programming ramp and soak cycles, remote control and data collection Column oven is completely solid state; the only moving parts are the cooling and chamber fan that maintains uniform temperature. Peltier-based design with no compressors or CFCs makes for high energy efficiency, using at most 230 watts of power. LCD display is 5/8" high and reads to 0.1°C with 0.2°C accuracy over the entire range of 4.0 to 70.0°C. Chamber fan provides temperature uniformity. User-settable electronic timer has alarm and auto-off to 99 hours, 59 minutes, 59 seconds. Timer and temperature display can be toggled with the touch of a button. Single point electronic calibration is accurate and easily reset and configured by the user. All commands are backed-up by a circuit that senses power failures and resets the unit to set point; with visual indicator. Self-check on power-up notifies user of any problems and assures trouble-free operation. Chamber includes separate valve and spill drains. Four mounting posts and included Viton O-rings hold columns securely in place. Door has a mounting hole for Rheodyne valves 7175, 7725, 8125 or 9125. Chamber dimensions, H x W x D, in. (cm): 15.625 x 6.385 x 5.125 (39.69 x 16.28 x 13.02). Overall dimensions, H x W x D, in. (cm): 25.5 x 8.75 x 13.25 (64.77 x 22.23 x 33.66). Valve hole diameter: 1.625" (4.13 cm). Pending UL, CSA and CE approvals.