Metrohm 850 Professional IC Cation - Prep 2 - Manual (Page 104)

6.8 Sample degasser
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850 Professional IC – Cation – Prep 2
Pressure range
Pump 0…50.0 MPa (0…500 bar)
Pump head 0…35.0 MPa (0…350 bar) (applies for the standard PEEK pump head)
Residual pulsa-
tion < 1 %
Safety shutdown
Function Automatic shutdown upon reaching the pressure limit values
Maximum pres-
sure limit ￭ Adjustable from 0.1…50 MPa (1…500 bar)
￭ The pump is automatically shut down at the first piston stroke
above the maximum limit value
Minimum pres-
sure limit ￭ Adjustable from 0…49 MPa (0…490 bar)
￭ The shutdown mechanism is inactive at 0 MPa
￭ The shutdown mechanism only becomes active 2 minutes after sys-
tem start
￭ The pump is automatically shut down after 3 piston strokes below
the minimum pressure limit
Gradient capacity Isocratic or gradient (extendable to quaternary)
Profile Step, linear, convex and concave
Resolution < 1 nL/min flow increments
6.8 Sample degasser
Material fluoropolymer
Resistance to sol-
vents No restriction (apart from PFC)
Build-up time for
the vacuum < 60 s
6.9 Peristaltic pump
Type 2-channel peristaltic pump
Rotating direction Counterclockwise/Clockwise rotation
Rotational speed 0…42 rpm in 7 stages at 6 rpm.
Pumping proper-
ties 0.3 mL/min at 18 rpm; with 6.1826.320 standard pump tubing.
Material of pump
tubings recommended: Tygon Long Flex Life