Ion Selective Electrode for Silver and Sulfide

Ag⁺/S^2-

Technical Data Sheet

Structure of the electrode

range^*:

0.1 to 10,000 mg/L silver
0.03 to 200 mg/L sulfide

The silver- and sulfide - sensitive electrode is a solid-state membrane electrode with a highly compressed Ag₂S sensor element embedded in a plastic shaft by means of a special resin.
A silver contact layer and a shielded cable are used for potential discharge.

Ordering Information

PO No.	Type	Description
116 100	Ag/S	selective electrode with 1m sealed cable
116 101	Ag/S	selective electrode with 1m sealed cable with BNC connector
116 102	Ag/S	selective electrode with 1m sealed cable with DIN connector
116 005	Ag/S	selective electrode with indutrial threaded head
117 004	Ag/S	selective threaded mini electrode with BNC connector

slope of characteristic:

57 (+-)2 mV/pAg
27 (+-)2 mV/pS

response time in 10^-3 M
(107 mg/L silver or 32 mg/L sulfide):

< 30 sec

drift within 30 minutes:

0.3 mV

drift within 24 hours:

1 mV

concentration of interfering ion species (relative to silver and sulfide):

Hg²⁺ and OH^- affect silver solution (precipitates)
H⁺ affects sulfide solution (formation of H₂S)

pH range:

1 - 7 (determinations of silver)
7 - 14 (determinations of sulfide)

temperature range:

0 - 80 °C

resistance:

< 0.01 MOhm

sensor material:

die-pressed Ag₂S, silver contact

shaft material:

plastic

dimensions:

length 145mm
diameter 12 mm