•Waters HPLC 680 Automated Gradient Controller, Operational Specifications:
•Flow: 0 to ml/min in 0.01 ml/min increments for each operational pump (0-30 ml/min total for three pumps),
•Composition: 0 to 100% in 1% increments for each of three components - A, B and C,
•Gradient Programs: 10 storable programs, each with 10 segments. Each segment allows simultaneous changes in total flow and composition of A, B or C in accordance with any of 11 different curves.
•Timed Event Programs: 10 storable programs, each with 20 timed events. Capable of controlling 7 external devices and an audible beeper.
•Program Memory Protection: Programs stored in memory retained indefinitely without line power or batteries. Stored programs may be modified or deleted by operator.
•Low Pressure Limit: Settable from 0 to 5950 psi in 1 psi increments. Low pressure for more than 90 sec will cause pumps to stop.
•High Pressure Line: Settable from 51-6000 psi in 1 psi increments. High pressure for more than 2 sec will cause pumps to stop.
•Compressibility Compensation: Settable from 0 to 40 % in 0.1% increments for each of three components.
Environmental Specifications:?Temperature: - Operating Range: 5 to 40 C
?Storage Range: -45 to 65 C,
?Humidity: - Operating Range: 20% to 95% RH,
?Storage Range 0% to 100% RH (non-condensing)
115 / 230 VAC - 1 / 0.5 A - 50, 60 Hz