| Maximum Flow Rate |
42
L/min
(11.1 gpm)
(higher possible) |
288 ml/min (.076
gpm) |
13L/min
(3.43 gpm) (higher possible) |
940 ml/min (.248 gpm) |
14 L/min (3.75 gpm) |
27 L/min
(7.1 gpm) |
| Volume Displacement
per Revolution |
.017 ml |
.2µl |
<.002 ml |
.94 ml |
8 ml |
3 ml |
| Drive Speed rpm (maximum) |
6000 |
6000 |
500 |
1000 |
1750 |
10000 |
Maximum
Differential
Pressure |
8.6 bar
(125 psi)
(higher possible) |
80 bar (1160 psi) |
<2.5 bar
(<36 psi)
(PTFE tubing 6.9) |
6.9 bar (100 psi) |
1.03 bar (15 psi) |
~14 meters
head
(~46 ft head) |
| Accuracy and Repeatability |
high |
high |
high |
very high |
Very high |
n/a |
| Autoclavability /
Sterility |
not with PTFE gears |
yes |
replace tubing |
no |
no |
not with PTFE components |
| Calibration / Recalibration |
frequent |
frequent |
high frequency |
low frequency |
frequent |
low
frequency |
| Chemical Inertness |
high |
high |
very high |
very high |
high |
high |
| Corrosion Resistance |
good |
good |
very high |
high |
very high |
good |
| Cross-Contamination |
yes
(thorough flushing is required) |
yes
(thorough flushing is required) |
virtually none (tubing
exchange) |
yes
(thorough flushing is required) |
yes
(thorough flushing is required) |
yes
(thorough flushing is required) |
| Dead Volume |
very low |
very low |
very low |
very low |
low |
low |
Direct Contact with
Mechanical Parts
of the Pumphead |
yes |
yes |
no |
yes |
yes |
yes |
| Run Dry |
no |
no |
yes |
no |
no |
no |
| Fittings |
hose barb
or screw coupling |
hose barb |
hose barb |
hose barb
or screw coupling |
hose barb
or screw coupling |
hose barb
or screw coupling |
| Flow Rate Sensitivity
to Differential Pressure |
low |
low |
very low |
n/a |
low |
very high |
Interchangeability
of Pumpheads |
easy |
possible |
easy |
possible |
easy |
easy |
| Leakage Susceptibility |
low |
low |
low |
low |
low |
low |
| Maintenance (Time
and Cost) |
medium (service kits)
|
medium (service kits)
|
very low
(only tubing exchange) |
low (thorough flushing)
|
medium (service kits)
|
medium (service kits)
|
| Multi-Channel Systems |
no |
no |
yes |
no |
no |
no |
| Pulsation Ratio |
very low |
very low |
low to high (number
of rollers) |
high |
moderate |
n/a |
| Pumping of High Viscosity
Liquids |
yes |
yes |
yes |
yes |
yes |
no |
| Pumping of Suspensions,
Sludges and Particles |
yes |
yes |
yes |
yes |
yes |
yes |
| Self-Priming |
yes |
yes |
yes |
yes |
yes |
no |
| Shearing Forces |
moderate |
moderate |
low |
high |
moderate |
low |
| Siphoning Effect When
Pump Is Stopped |
yes |
yes |
no |
no |
yes |
yes |
| Suction Lift |
dry: ~0.2 m (.65
ft)
wet: 0.-1.2m (0-4 ft) |
wet/dry:
~5 m
(16.72 ft) |
wet/dry:
7 - 8 m
(22.9-26.2 ft) |
wet::
4.5 m
(14.7 ft) |
dry:
1.5 m
(5 ft) |
n/a |