VISOCOLOR® ECO Chloride • Colorimetric determination of chloride • Chloride ions react with mercuric thiocyanate to produce undissociated mercuric chloride and to liberate thiocyanate ions. • In the presence of ferric salts these thiocyanate ions produce a characteristic orange colour. Type: refill pack Range: 1 · 2 · 4 · 7 · 12 · 20 · 40 · 60 mg/l Cl– Sufficient for: 90 determinations Shelf life at least: 1 year Sea water suitability: no Detectable with PF-12: yes • Chloride ions occur in all natural waters. • Their concentration depends on the geological and local situation. • In waste waters and polluted rivers the chloride concentration can reach high values.