Fig 1.
Schematic overview of the key components of the system, including the computer (PC) with “OpenPhControl”.
Fig 2.
The upgraded open source syringe pump [16] with a 50 ml syringe and tubes with valves and tubes from infusion set.
Fig 3.
Wiring of syringe pump module.
Fig 4.
The print screen of calibration of digits reading.
Fig 5.
Precision testing of peristaltic pump powered at 9V and 12V.
Fig 6.
TEMPO-mediated oxidation of cellulose performed by “OpenPhControl” a) manually and b) automatically.
Fig 7.
Zoomed graphs which demonstrate the change of pH (red lines) with addition of NaOH (blue lines) during TEMPO-mediated oxidation of cellulose: a) from 0 to 1500 s, and b) from 6000 to 6400 s.
Fig 8.
Functional groups amount in unmodified (0) and in the TEMPO-mediated oxidized cellulose fibers (samples 1–5), and the amount of consumed NaOH solution for maintaining pH during oxidation.
Fig 9.
Titration curve recorded with “OpenPhControl”.