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Flow rate tests were done with 20°C water at 0 PSI back pressure.
Table 9-2. Average Flow Rates
Tubing Wall Tubing Size mL per Minimum Flow Maximum Flow
Thickness Inner Diameter Revolution Rate at 600 RPM Rate at 600 RPM
(mL/Minute) (mL/Minute)
1
⁄
16"
1
⁄
32" 0.05 1 30
1
⁄16"
1
⁄16" 0.22 3 132
1
⁄16"
1
⁄8" 0.9 9 540
1
⁄16"
3
⁄16" 1.9 19 1140
1
⁄16"
1
⁄4" 3.0 30 1800
1
⁄16"
5
⁄16" 3.8 38 2280
1.5 mm 1.0 mm 0.08* 1 48
1.5 mm 2.0 mm 0.35* 4 210
1.5 mm 3.0 mm 0.8* 8 482
1.5 mm 4.0 mm 1.43* 15 857
1.5 mm 5.0 mm 2.1* 21 1257
1.5 mm 6.0 mm 2.7* 27 1607
1.5 mm 7.0 mm 3.6* 37 2187
1.5 mm 8.0 mm 3.9* 39 2316
* Metric mL per revolution numbers are rounded off
To determine the chemical compatibility of a particular tubing material, it is
recommended that you test the tubing under actual conditions
Tubing materials that can be used include Vinyl, Viton, Tygon, Silicone, Santoprene,
and Norprene. Up to 68 durometer tubing can be used.
Table 9-3. Variances in Normalized Flow Rate (mL per Revolution)
Tubing Size Due to Between Pumps Due to Different
Inner Diameter Motor (due to Mechanical Tubing Materials
(in.) Speed Tolerances)
1
⁄32 ±10% ±25% ±20%
1
⁄16 ±10% ±15% ±15%
1
⁄8 ±10% ±10% ±5%
3
⁄16 ±5% ±10% ±5%
1
⁄4 ±5% ±15% ±5%
5
⁄16 ±15% ±20% ±10%
Specifications
9
9-2