# Hydraulic pressure sensor for biological sample

I need to filtrate blood sample (About 2 ml). I have a tube (roughly 0,5 inches of internal diameter) attached to the filter cassette inlet. The cassette is plugged to vacuum pump. I would like to measure the pressure before filter. The easiest thing is to use some small sensor plus Arduino. What sensors can be used for that? Most common I see water piping sensor but its too big for my sistem.

Everything upper 1 kPa causes cells death. Pressure range must be rougly 0-750 Pa

• Product suggestions are against the rules of this site, so your question may be soon removed. Consider editing your question, perhaps asking for types or configurations of pressure sensors that may be useful in order to obtain accurate measurements for your setup and pressure range. BTW, a parametric search of the common world-wide electronic parts distributors will return hundreds of pressure sensor options. Try to specify what is really important to you. – Chris Knudsen Jun 11 '20 at 20:37