Q: The brief one page picture diagram instruction sheet leaves me confused as to the calibration sequence of steps. Can you expand on these steps? Can a salt sample solution other than 7450 ppm be used, say a solution made with a medical grade 1 gram salt tablet and 500 ml of distilled water making a 2000 ppm solution be used to calibrate this instrument? Where is the source of certified solutions available?
A:
Only a solution with a value of 7450 PPM will work.
