Hanna Instruments HI 2214 - Manual (Page 45)

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HI 1413B
Glass-body, single junction, flat tip, Viscolene, non-refillable, combination
pH electrode. Use: surface measurement.
ORP ELECTRODES
HI 3131B
Glass-body, refillable, combination platinum
ORP electrode.
Use: titration.
HI 3230B
Plastic-body (
PES), gel-filled, combination platinum ORP electrode.
Use: general purpose.
HI 4430B
Plastic-body (
PES), gel-filled, combination gold ORP electrode.
Use: general purpose.
Consult the Hanna General Catalog for more electrodes with screw-type or
BNC connectors.