Development of an economical, autonomous pHstat system for culturing phytoplankton under steady state or dynamic conditions

Graphical coding data and operational guidance for implementation or modification of a LabVIEW®-based pHstat system for the cultivation of microalgae

“…These data both help improve functionality of the system, and provide specific coding blocks for controlling the pHstat using a LabVIEW® virtual instrument (VI). The data in this paper support the research article “Development of an economical, autonomous pHstat system for culturing phytoplankton under steady state or dynamic conditions” (Golda et al [2]). These data will be of interest to researchers studying the effects of changing pH on phytoplankton in a laboratory context, and to those desiring to build their own pHstat system(s).…”

“…When the pH returns to the acceptable thresholds, the system deactivates and remains on standby until the next pH deviation occurs. A complete description of the system can be found in Golda et al [2].…”

“…3.1–3.4 and 4.1–4.3 show the graphical code blocks separated broadly by function. Details on connecting this code language to the electromechanical portion of the pHstat can be found in Golda et al [2]. The figures are followed by operational instructions for using the VI as it operates according to the coding blocks presented in Fig.…”

“…3 expanded to show programmatic detail. Depicts graphical code for generating and recording data from the subVIs “Elapsed Time,” “Write to Measurement File – pH,” and “Write to Measurement File – Solenoids.” Golda et al [2] provides details on the data saved.

Fig. 3.3Section 3 from Fig.

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“…Guide pH is generated using a sine wave, with the user setting the frequency, offset, amplitude, and phase in order to time the wave to start at a desired pH. Details on how the dynamic functionality works can be found in Golda et al [2].

Fig. 3.4Section 4 from Fig.

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