STF Specs


ST Positive Displacement Adjustable Dispensing
Versatile Pump Solution
The ST Positive Displacement Adjustable Dispensing Pump is offered in
drive con昀椀gurations from 5 µL to 400 µL in 1 µL increments. Each drive
model when paired with a Fluid Metering pump head, guarantees optimal
dispense volume/昀氀ow rate and full chemical compatibility. Standard pump
head options are available with various sealing options and diameters to suit
speci昀椀c requirements.
Pump Specifications
WETTED MATERIAL OPTIONS:
Ceramics: Alumina, Zirconia
Pump Housing: PVDF, ETFE, Polypropylene
Seals: PTFE, FKM, FFKM, Rulon AR, UHMW-PE
Drive Motor Specifications
PORT OPTIONS:
RATED CURRENT:
1/4-28 UNF Threaded Ports,
Barb Fittings (1/8” - 1/4” Tubing ID),
1/4” Compression Nuts
Rotational: 2.0A
STEP ANGLE:
DISPENSE VOLUME:
Rotational: 1.8° Full Step
For 5 - 10μL
For >10 - 400μL
Accuracy of ± 5%
Precision (CV) ≤ 1%
Accuracy of ± 1%
Precision (CV) ≤ 0.5%
MOTOR DIRECTION:
Rotational: Bidirectional,
Calibrated Clockwise
DIMENSIONS:
3.0” Wide x 4.7” Tall
MOTOR FRAME:
Rotational: NEMA 17 (43mm)
Dispense Volume
(µL/rev)
STF
min
Flow Rate
(ml/min)
max
1 rpm
1000 rpm
STFSM
5
40
0.005
40
STF1
25
200
0.025
200
STF2
28
225
0.028
225
STF3
31
250
0.031
250
STF4
34
275
0.034
275
STF5
38
300
0.038
300
STF6
41
325
0.041
325
STF7
44
350
0.044
350
STF8
47
375
0.047
375
STF9
50
400
0.05
400
• Accuracy is a percentage of the target dispense volume
MOTOR SPEED:
Rotational: Up to 1000 rpm
OPERATING TEMPERATURE:
0°C to 50°C
Customizations
Be it a small tweak to existing technology or a full
development project, our pumps and dispensers
can be customized to accommodate dispense
volume, 昀氀ow rate, temperature, pressure, materials,
and more.
• Maximum standard operating pressure at 100 psig
• Fixed Link pumps are calibrated in-house to a set
volume
Regulatory Compliance
• Flow rate can be changed by adjusting motor speed
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www.昀氀uidmetering.com pumps@昀氀uidmetering.com 800-233-3388 516-922-6050
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