I kind of struggled reading the API test in the very beginning when I started using it.
The good part is that after experiencing all colours on the chart, you kind of learn how each one of them is supposed to look like in the vial, compared to the chart.
And it did take me some time to learn to distinguish between 0 and 0.25 ammonia.
The good part is that after experiencing all colours on the chart, you kind of learn how each one of them is supposed to look like in the vial, compared to the chart.
And it did take me some time to learn to distinguish between 0 and 0.25 ammonia.