Biotech Liquid flow meter

Measuring without
interference in your fluidic systems
Biotech is proud to introduce a new Flow Meter series which enables continuous measurement of flow rate, without interference in fluidic systems.
A modern PC based App allows continuous recording and storage of the measured flow rates.
- Supplied digitally calibrated with a certificate of conformity, our range of flow meters deliver high-precision and accuracy across a wide measurement range.
- Monitor your fluidic system and get pump performance diagnostics at the same time!
- Use the specially designed app for easy interaction and control.
- Save the data to your system
- Set the integration time - from continuous reading up to 10 seconds
- Choose between 5 different pre-calibrated solvents or add your own
- 4 different versions for flow rates ranging from a few nl/min up to 650ml/min
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Our ultra-reliable flow meters are suitable for virtually any flow application.
- The Micro- and HPLC-flow versions are compatible with all standard GPC/HPLC solvents.
- Chromatography – validation & diagnostic purpose
- Peristaltic pump monitoring
- Flow chemistry
- Process flow applications
- And more…
The Biotech Liquid Flow Meters are specifically designed for continuous measurement of flow rates. Compatible with a wide range of solvents/pH and pressures up to 3 MPa (435 psi), it is the perfect tool for high-precision measurement of flow rates ranging from 1-80µl/min up to 650 mL/min.
With the included app you will be able to take full control of your fluidic system.
Download Brochure
Download Manual
Download App(Password Required)
Technical Note
Contact us for inquiries or more information

Micro Flow | HPLC Flow | Prep Flow | High Flow | |
---|---|---|---|---|
AB-40008 | AB-40010 | AB-40040 | AB-40650 | |
Measuring range | 1 nL-80 µL/min | 1 µL-5 mL/min | 0.1-40 mL/min | 0.1-650 mL/min |
Maximum resulution | 1 nL/min | >0.0005mL/min | 0.1 mL/min | 0.1 mL/min |
Accuracy | >0.2% FSD | >0.2% FSD | >0.2% FSD | >0.2% FSD |
Precision | >0.2% FSD | >0.2% FSD | >0.2% FSD | >0.2% FSD |
Integration time factor | 78, 312, 1172(default), 5781 or 9844 milliseconds | |||
Maximum pressure | 3 MPa(435 psi) | 3 MPa(435 psi) | 1.2 Mpa(174psi) | 0.3 Mpa(43psi) |
pH operating range | 1 to 11 | 1 to 11 | 1 to 11 | 1 to 11 |
Measuring cell volume | 5 µL | 94 µL | 58 µL | 276 µL |
Cell diameter | 0.43 mm | 1.8 mm | 1.4 mm | 4 |
Cell length | 37 mm | 37 mm | 22 mm | 22 |
Fluidic connectors | Female 1/4''-28 flat bottom | Female 1/4''-28 flat bottom | Female 1/4''-28 flat bottom | 8 mmBabed end with tubing*** |
Pressure drop | 1 mbar | 0.12 mbar* | <4 mbar | <4 mbar |
Wetted materials | Quartz glass (borosilicate) and PEEK | PPS, SS-316 and epoxy resin | ||
Display | High resolution OLED display | |||
Control | USB-powered plug-and-play software | |||
Calibration | Validated with water. Calibrations factors included | |||
Temp range | 10-50 °C | |||
1. Water (validated) | Yes | Yes | Yes | Yes |
2. Methanol | Yes | Yes | Yes | Yes |
3. THF | Yes | Yes | -** | -** |
4. Acetonitrile/water | Yes | Yes | Yes | Yes |
*@ 5 mL/min with water | ** THF is not tolerated *** Tubing type to be agreed on |
Messurement of pump pulsation, example:

310 m sec integration time
