LW Scientific USA C5 - Manual (Page 4)

Radius with no cushions
Radius with cushions
Serum
Tube Cushion
Red Cells Gel Tube Shield
Rotor Rotor Nut
Motor
G-Force = 1.118 (R) (N/1,000) 2
R: radius in millimeters N: rpm’s
Blood
3,000+ rpm 10 min. (1,500+ g)
Fecals 1,300 rpm 6 min. (280 g)
Semen 1,600 rpm 10 min. (400 g)
Urine 1,600 rpm 5 to 10 min. (400 g)
G-Force and Spin Time are the most
important considerations for proper
fluid separations. G-force is a function
of radius and speed, and varies with
different centrifuges and rotor
configurations. The following are
commonly recommended separation
settings. Please refer to your tube
manufacturer and/or medical
procedures manuals for the correct
G-force and spin times for each fluid,
tube type, and procedure.
RPM’s
1,000
1,300
1,600
1,800
2,000
2,500
3,000
3,500
4,000
4,500
5,000
Large Tube Sleeve
(152mm radius)
G-Force
170
287
435
551
680
1,062
1,529
2,082
2,719
3,441
4,250
G-Force
131
221
335
424
523
818
1,177
1,602
2,093
2,649
3,270
Small Tube Sleeve Insert
(117mm radius)
Blood
Urine / Semen
Fecals
G-Forces:
Care and Maintenance Continued
Because of the safety issues with high g-forces in a centrifuge, it is recommended that rotors, buckets, and tube shields
be inspected every 6 months for corrosion and fatigue. If there is any indication of wear, the rotor, buckets, and tube
shields should be removed from service. Contact LW Scientific for return instructions, so the rotor can be evaluated by an
LW Scientific technician for repair or replacement. It is also recommended that after 2 years of service rotors, buckets,
and tube shields be returned to LW Scientific for inspection. Following these procedures will ensure safety of lab personnel
as well as extend the life of the centrifuge.
*Please note the following procedures are for the 8-place rotor ONLY.
MKT-7.5.3-L-170 | Rev 1
Specifications
Speed Range: Swing-out: 500-5,000 rpm
Bucket: 500-4,000 rpm
Max Force: 4,250 G-force
Max Volume: 240 ml (24-place)
120 ml (8-place)
Fuse: 5 amp / 250 v
Motor: Brushless DC
Height: 12.63” (320 mm)
Length: 18.13” (460 mm)
Width: 15.5” (393 mm)
Weight: 39 lb (17.7 kg)
(Not including rotor)
Blood can be separated at G-forces
between 1,200 and 4,250 G’s, and
at spin times between 2 minutes
and 15 minutes depending upon
tube type and procedure.
Common routine blood separations
are performed at 1,500-2,000 G’s
(3,000-4,000 rpm) for 8-10 minutes,
and platelet-poor-plasma
separations are done at 4,250 G’s
(5,000 rpm) in 6-8 minutes.
Warning: Some types of tubes
cannot withstand the high G-forces
produced at full speed in the C5,
and tube breakage may result from
improper speed settings.
The C5 Centrifuge is intended for use as a Class 1 Medical Device