Test standards to test ISE VARiON® electrodesof brand WTW.
VARiON®/ES-1: Multiple standard solution 1 (low concentration) for VARiON®Plus 700 IQ/AmmoLyt®Plus 700 IQ/NitraLyt®Plus 700 IQ; Volume: 1000 mlVARiON®/ES-2: Multiple standard solution 2 (high concentration) for VARiON®Plus 700 IQ/AmmoLyt®Plus 700 IQ/NitraLyt®Plus 700 IQ; Volume: 1000 ml
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