date:Nov 26, 2013
ter and then into the sensor.
Throughout her research, Heising investigated the practicalities of using a number of different sensors including those that measure acidity, ammonia and conductivity.
She found that the ammonia sensor was unreliable as the substance was only released once the fish was essentially bad, and the acidity sensor was deemed inaccurate as temperature appeared to interfere with the readings.
Conductivity sensors however have proven to be more reliable. As substances a