To simulate the pipetting of the triplicate determination, a pH test was conducted on three synthesized sample solutions. In 100 ml round-bottom flasks, a neutral, an acidic, and a basic solution were prepared. For a pH range between 6 and 8, 50 ml of water was added to the round-bottom flasks. To establish an acidic solution with c[H+] > 10^-7, three small spoonfuls of citric acid were added to 50 ml of water. A concentration of [c] < 10^-7 was achieved by adding three small spoonfuls of sodium carbonate.
100 µl of each solution was transferred into three Eppendorf tubes for the addition of the indicator. After adding 3 drops of diluted Unitest solution, the colored sample solutions were pipetted into a well plate. Subsequently, the intensity will be measured photometrically as an example.
The required times for the three phases of preparation/setup, execution, and breakdown/cleaning were recorded and statistically analyzed with and without the use of the SmartRack® for n = 10.