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Passive Flow Splitter (Tubing
Calculator)
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Step 1
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Input Flow rate, Split
Ratio and Solvent used
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Step 2
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Choose tubing ID for
Primary and Split from drop down (refer to table if needed)
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Step 3
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Choose length of tubing
desired for split flow path, it will calculate length of primary tubing
required
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Observe time Offset,
Longer time difference is needed for fraction collection and a smaller time
offset.
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is needed to align output
signals from two detectors. Adjust as necessary
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Input Total Flow Rate
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mL/min
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Input Split Ratio
desired
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(eg for 50:1 split enter 50)
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Solvent Name
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Solvent viscosity (cp)
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Primary Tube
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Split Tube
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Flow Rate (mL/min)
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Tubing diameter (inch)
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Tubing Length (feet)
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Max Predicted pressure
drop (psi)
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Time Offset (sec)
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Tubing I.D.
(Inner Diameter)
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O.D
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Inch
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µL/inch
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mm
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µL/cm
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microns
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0.093
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109.57
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2.362
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43.83
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2400
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0.065
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53.52
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1.651
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21.41
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1650
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1/8"
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0.062
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48.70
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1.575
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19.48
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1600
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(3.2mm)
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0.058
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42.62
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1.473
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17.05
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1500
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0.040
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20.27
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1.016
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8.11
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1000
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0.030
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11.40
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0.762
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4.56
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760
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0.020
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5.07
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0.508
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2.03
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500
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0.013
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2.14
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0.320
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0.80
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320
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0.010
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1.27
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0.254
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0.51
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250
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1/16"
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0.009
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1.03
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0.229
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0.41
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225
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(1.6mm)
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0.007
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0.62
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0.178
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0.25
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180
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0.005
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0.32
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0.127
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0.13
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125
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0.004
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0.20
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0.100
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0.079
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100
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0.003
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0.11
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0.075
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0.044
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75
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0.002
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0.05
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0.050
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0.020
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50
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0.001
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0.01
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0.025
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0.005
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25
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© 2012 Waters Corporation |
