Formulation, used to increase the stability of the model 420 and with Cl levels below 0.5ppm, means that a combined protocol can use the same sample for chloride, sodium and potassium
Sherwood already supplies its model 926s chloride meter as the level of chloride confirms the diagnosis of cystic fibrosis on sweat samples.
In addition to the chloride content many biochemists like to see the potassium and sodium levels as well.
The Sherwood model 420 dual channel flame photometer is ideal for this task.
Now the new formulation of lithium internal standard, used to increase the stability of the model 420 and with Cl levels below 0.5ppm, means that a combined protocol can use the same sample for chloride, sodium and potassium.
