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Tubing Size Reference Chart
Gauge
For swivels, needles, couplers and cannulae
Gauge |
OD
(in) |
OD
(mm) |
ID
(in) |
ID
(mm) |
Vol
(µl/cm) |
| 13TW |
0.095 |
2.41 |
0.077 |
1.96 |
30.0 |
| 13 |
0.095 |
2.41 |
0.071 |
1.80 |
25.5 |
| 14TW |
0.083 |
2.11 |
0.067 |
1.70 |
22.8 |
| 14 |
0.083 |
2.11 |
0.063 |
1.60 |
20.1 |
| 15TW |
0.072 |
1.83 |
0.061 |
1.55 |
18.9 |
| 15 |
0.072 |
1.83 |
0.054 |
1.37 |
14.8 |
| 16TW |
0.065 |
1.65 |
0.054 |
1.37 |
14.8 |
| 16 |
0.065 |
1.65 |
0.047 |
1.19 |
11.1 |
| 17TW |
0.058 |
1.47 |
0.048 |
1.22 |
11.7 |
| 17 |
0.058 |
1.47 |
0.042 |
1.07 |
8.99 |
| 18TW |
0.050 |
1.27 |
0.039 |
0.99 |
7.70 |
| 18 |
0.050 |
1.27 |
0.033 |
0.84 |
5.54 |
| 19TW |
0.042 |
1.07 |
0.033 |
0.84 |
5.54 |
| 19 |
0.042 |
1.07 |
0.027 |
0.69 |
3.74 |
| 20TW |
0.036 |
0.91 |
0.026 |
0.66 |
3.42 |
| 20 |
0.036 |
0.91 |
0.024 |
0.61 |
2.92 |
| 21TW |
0.032 |
0.81 |
0.023 |
0.58 |
2.64 |
| 21 |
0.032 |
0.81 |
0.020 |
0.51 |
2.04 |
| 22TW |
0.028 |
0.71 |
0.020 |
0.51 |
2.04 |
| 22 |
0.028 |
0.71 |
0.016 |
0.41 |
1.32 |
| 22Q |
0.028 |
0.71 |
0.006 |
0.15 |
0.18 |
| 23TW |
0.025 |
0.64 |
0.017 |
0.43 |
1.45 |
| 23 |
0.025 |
0.64 |
0.013 |
0.33 |
0.86 |
| 24TW |
0.022 |
0.56 |
0.015 |
0.38 |
1.13 |
| 24 |
0.022 |
0.56 |
0.012 |
0.30 |
0.71 |
| 25TW |
0.020 |
0.51 |
0.012 |
0.30 |
0.71 |
| 25 |
0.020 |
0.51 |
0.010 |
0.25 |
0.49 |
| 26 |
0.018 |
0.46 |
0.010 |
0.25 |
0.49 |
| 27 |
0.016 |
0.41 |
0.008 |
0.20 |
0.31 |
| 28 |
0.014 |
0.36 |
0.007 |
0.18 |
0.25 |
| 29 |
0.013 |
0.33 |
0.007 |
0.18 |
0.25 |
| 30 |
0.012 |
0.30 |
0.006 |
0.15 |
0.18 |
French
For catheter OD (3Fr=1mm)
French |
OD
(in) |
OD
(mm) |
Gauge |
PE |
| 1Fr |
0.013 |
0.33 |
27 |
- |
| 2Fr |
0.026 |
0.67 |
23 |
PE-10 |
| 3Fr |
0.039 |
1.00 |
20 |
PE-50 |
| 4Fr |
0.053 |
1.33 |
18 |
PE-90 |
| 5Fr |
0.066 |
1.67 |
16 |
PE-190 |
| 6Fr |
0.079 |
2.00 |
14 |
PE-205 |
| 7Fr |
0.092 |
2.33 |
13 |
PE-240 |
| 8Fr |
0.105 |
2.67 |
12 |
PE-260 |
| 9Fr |
0.118 |
3.00 |
11 |
- |
| 10Fr |
0.131 |
3.33 |
10 |
PE-280 |
| 11Fr |
0.144 |
3.67 |
9 |
PE-320 |
| 12Fr |
0.158 |
4.00 |
8 |
PE-350 |
| 13Fr |
0.170 |
4.33 |
8 |
- |
| 14Fr |
0.184 |
4.67 |
7 |
PE-360 |
| 15Fr |
0.197 |
5.00 |
6 |
- |
Polyurethane (PU)
For Catheters, bulk tubing
Size |
OD
(in) |
OD
(mm) |
ID
(in) |
ID
(mm) |
Vol
(µl/cm) |
| 2 French |
0.025 |
0.64 |
0.013 |
0.33 |
0.86 |
| 3 French |
0.036 |
0.91 |
0.023 |
0.58 |
2.64 |
| 3.5 French |
0.047 |
1.20 |
0.027 |
0.69 |
3.74 |
| 5 French |
0.065 |
1.65 |
0.040 |
1.02 |
8.17 |
| 7 French |
0.096 |
2.43 |
0.052 |
1.32 |
13.70 |
Silicone (SIL)
For Catheters, bulk
tubing
Size |
OD
(in) |
OD
(mm) |
ID
(in) |
ID
(mm) |
Vol
(µl/cm) |
| 2 French |
0.025 |
0.64 |
0.012 |
0.30 |
0.71 |
| 3 French |
0.037 |
0.94 |
0.020 |
0.51 |
2.04 |
| 3.5 French |
0.047 |
1.19 |
0.025 |
0.64 |
3.22 |
| 5 French |
0.065 |
1.65 |
0.030 |
0.76 |
4.54 |
| 7 French |
0.085 |
2.16 |
0.040 |
1.02 |
8.17 |
| 8 French |
0.100 |
2.54 |
0.054 |
1.37 |
14.70 |
| 9 French |
0.125 |
3.18 |
0.062 |
1.57 |
19.40 |
Polyethylene (PE)
For bulk
tubing
Size |
OD
(in) |
OD
(mm) |
ID
(in) |
ID
(mm) |
Vol
(µl/cm) |
| PE-10 |
0.024 |
0.61 |
0.011 |
0.28 |
0.62 |
| PE-20 |
0.043 |
1.09 |
0.015 |
0.38 |
1.13 |
| PE-50 |
0.038 |
0.97 |
0.023 |
0.58 |
2.64 |
| PE-60 |
0.048 |
1.22 |
0.030 |
0.76 |
4.54 |
| PE-90 |
0.050 |
1.27 |
0.034 |
0.86 |
5.81 |
| PE-100 |
0.060 |
1.52 |
0.034 |
0.86 |
5.81 |
| PE-160 |
0.062 |
1.57 |
0.045 |
1.14 |
10.20 |
| PE-190 |
0.067 |
1.70 |
0.047 |
1.19 |
11.10 |
| PE-200 |
0.075 |
1.91 |
0.055 |
1.40 |
15.40 |
| PE-205 |
0.082 |
2.08 |
0.062 |
1.57 |
19.40 |
| PE-240 |
0.095 |
2.41 |
0.066 |
1.68 |
22.20 |
| PE-260 |
0.110 |
2.79 |
0.070 |
1.78 |
24.90 |
| PE-280 |
0.128 |
3.25 |
0.085 |
2.16 |
36.60 |
| PE-320 |
0.138 |
3.51 |
0.106 |
2.69 |
56.80 |
| PE-350 |
0.157 |
3.99 |
0.125 |
3.18 |
79.40 |
| PE-360 |
0.190 |
4.83 |
0.148 |
3.76 |
111.00 |
CO-EX™
For bulk tubing
Size |
OD
(in) |
OD
(mm) |
ID
(in) |
ID
(mm) |
Vol
(µl/cm) |
| T25 |
0.051 |
1.30 |
0.017 |
0.43 |
1.45 |
| T22 |
0.064 |
1.60 |
0.024 |
0.61 |
2.92 |
Tygon® (PVC)
For bulk tubing
Size |
OD
(in) |
OD
(mm) |
ID
(in) |
ID
(mm) |
Vol
(µl/cm) |
| S54-HL |
0.030 |
0.76 |
0.010 |
0.25 |
0.49 |
|
0.060 |
1.52 |
0.020 |
0.51 |
2.04 |
|
0.070 |
1.78 |
0.040 |
1.02 |
8.17 |
|
0.090 |
2.29 |
0.030 |
0.76 |
4.54 |
|
0.090 |
2.29 |
0.050 |
1.27 |
12.70 |
| S50-HL |
0.093 |
2.36 |
0.031 |
0.79 |
4.90 |
|
0.125 |
3.18 |
0.062 |
1.57 |
19.40 |
|
0.156 |
3.96 |
0.093 |
2.36 |
43.70 |
|
0.188 |
4.77 |
0.062 |
1.57 |
19.40 |
Values are approximate. Tygon is a registered trademark of Saint-Gobain
Performance Plastics Corporation. CO-EX is a trademark of Solomon Scientific.
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tubing information [PDF]
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