| Maximum Flow Rate |
13L/min
(3.43 gpm) (higher possible) |
38 L/min
(10 gpm)
(higher possible) |
60 ml/min (.016 gpm) |
27 L/min
(7.1 gpm) |
14 L/min (3.75 gpm) |
| Volume Displacement per Revolution |
<.002 ml |
.017 ml |
.160 ml |
3 ml |
8 ml |
| Drive Speed rpm (maximum) |
500 |
6000 |
300 |
10000 |
1750 |
Maximum
Differential
Pressure |
<2.5 bar
(<36 psi)
(PTFE tubing 6.9) |
8.6 bar
(125 psi)
(higher possible) |
6.9 bar (100 psi) |
~14 meters
head
(~46 ft head) |
1.03 bar (15 psi) |
| Accuracy and Repeatability |
high |
high |
very high |
n/a |
Very high |
| Autoclavability / Sterility |
replace tubing |
not with PTFE gears |
no |
not with PTFE components |
no |
| Calibration / Recalibration |
high frequency |
frequent |
low frequency |
low
frequency |
frequent |
| Chemical Inertness |
very high |
high |
very high |
high |
high |
| Corrosion Resistance |
very high |
good |
high |
good |
very high |
| Cross-Contamination |
virtually none (tubing exchange) |
yes
(thorough flushing is required) |
yes
(thorough flushing is required) |
yes
(thorough flushing is required) |
yes
(thorough flushing is required) |
| Dead Volume |
very low |
very low |
very low |
low |
low |
Direct Contact with Mechanical Parts
of the Pumphead |
no |
yes |
yes |
yes |
yes |
| Run Dry |
yes |
no |
no |
no |
no |
| Fittings |
hose barb |
hose barb
or screw coupling |
hose barb
or screw coupling |
hose barb
or screw coupling |
hose barb
or screw coupling |
| Flow Rate Sensitivity to Differential Pressure |
very low |
low |
n/a |
very high |
low |
Interchangeability
of Pumpheads |
easy |
easy |
possible |
easy |
easy |
| Leakage Susceptibility |
low |
low |
low |
low |
low |
| Maintenance (Time and Cost) |
very low
(only tubing exchange) |
medium (service kits) |
low (thorough flushing) |
medium (service kits) |
medium (service kits) |
| Multi-Channel Systems |
yes |
no |
no |
no |
no |
| Pulsation Ratio |
low to high (number of rollers) |
very low |
high |
n/a |
moderate |
| Pumping of High Viscosity Liquids |
yes |
yes |
yes |
no |
yes |
| Pumping of Suspensions, Sludges and Particles |
yes |
yes |
yes |
yes |
yes |
| Self-Priming |
yes |
yes |
yes |
no |
yes |
| Shearing Forces |
low |
moderate |
high |
low |
moderate |
| Siphoning Effect When Pump Is Stopped |
no |
yes |
no |
yes |
yes |
| Suction Lift |
7 - 8 m (22.9-26.2 ft) |
dry: ~0.2 m (.65 ft) wet: ~0.75 m (2.4 ft) |
4.5 m
(14.7 ft) |
n/a |
1.5 m
(5 ft) |
