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For everyday aqueous samples · refillable
pH 0–14 · Ag/AgCl · 3 M KCl · Polycarbonate · 5–60°C · BNC (Q9)
For emulsions and suspensions · no refilling
pH 0–14 · Long-life reference · Sealed, no refilling · Polycarbonate · 0–80°C · BNC (Q9)
For precise laboratory pH · all-glass body
pH 0–14 · Long-life reference · 3 M KCl · Glass · 0–80°C · S7 – BNC (Q9)
