90DAYWARRANTY WATERS 680 GRADIENT CONTROLLER DIFFERENTIAL REFRACTOMETER FREESHIP

Waters HPLC 680 Automated Gradient Controller

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.

Electrical Specs (if applicable)

Volts : 90-265

HZs : 50-60

Amps : 1

VA : 80

Has been tested and works as intended.