Theory of Operation
B–3
pressure and capillary diameter. Also included in the table is the
volume of the capillary, residence time of the liquid in the capillary,
and the length of time for 1 mL to flow through the capillary.
Table B-1
Capillary Flow Characteristics for Water at 20
°
C
Capillary
Pressure Drop
Δ
P (psi)
Capillary Inner
Diameter
D
c
(µm)
Liquid Flow
rate
Q (nL/min)
Capillary
Volume
V (nL)
Liquid
Residence
Time
t
r
(sec)
Sample Time
t
s
(days/mL)
2.00 25 35.7
122.7
206 19.5
2.20 25 39.2
122.7
188 17.7
2.40 25 42.8
122.7
172 16.2
2.60 25 46.4
122.7
159 15.0
2.80 25 49.9
122.7
147 13.9
3.00 25 53.5
122.7
138 13.0
3.20 25 57.1
122.7
129 12.2
3.40 25 60.7
122.7
121 11.4
3.60 25 64.2
122.7
115 10.8
3.70 25 66.0
122.7
112 10.5
3.80 25 67.8
122.7
109 10.2
4.00 25 71.4
122.7
103 9.7
4.20 25 74.9
122.7
98 9.3
4.40 25 78.5
122.7
94 8.8
4.60 25 82.1
122.7
90 8.5
4.80 25 85.6
122.7
86 8.1
5.00 25 89.2
122.7
83 7.8
2.00 23 25.6
103.9
244 27.2
2.00 25 35.7
122.7
206 19.5
2.00 27 48.5
143.1
177 14.3
3.00 23 38.3
103.9
163 18.1
3.00 25 53.5
122.7
138 13.0
3.00 27 72.8
143.1
118 9.5
3.70 23 47.3
103.9
132 14.7
3.70 25 66.0
122.7
112 10.5
3.70 27 89.8
143.1
96 7.7
4.00 23 51.1
103.9
122 13.6
4.00 25 71.4
122.7
103 9.7
4.00 27 97.1
143.1
88 7.2
5.00 23 63.9
103.9
98 10.9
5.00 25 89.9
122.7
83 7.8
5.00 27 121.3
143.1
71 5.7
