Eppendorf 5418 R Centrifuge - Manual (Page 10)

Product description
Centrifuge 5418 / 5418 R
English (EN)
10
2.4.1 rcf display and calculation
To determine the g-force (rcf) for a special adapter, you can perform a calculation according to DIN 58 970
with the following formula:
rcf = 1.118 · 10 -5 · n 2 · r
max
n: Revolutions per minute (rpm)
r
max
: Max. centrifugation radius in cm
Example:
The 0.2 ml adapter has a maximum radius of 5.6 cm. At 5,000 rpm a maximum g-force of 1,565 x g is
reached.
Use the rpm/rcf key to switch the display of centrifugation speed between rcf and rpm.
Only 5418 R: For speeds ≤ 800 rpm only the lowest adjustable g-force (100 x g) is
displayed upon switching. The exact g-force (rcf) can be determined using the formula
given below.
Ensure that the g-force (rcf) displayed upon switching is standardized to suit the rotor
without an adapter. You can achieve the following maximum g-forces (rcf) at maximum
speed (rpm) when adapters are used:
Adapter Max. centrifugation
radius r
max
[cm]
Max. g-force (rcf)
Without adapter 7.7 16,873
for 0.2 mL PCR tubes 5.6 12,271
for 0.4 mL micro test tubes 7.7 16,873
for 0.5 mL micro test tubes 6.6 14,462
for 0.6 mL Microtainers 7.7 16,873