| Titrant |
Specifics |
Electrode description* |
Order No. |
Reference Electrolyte |
Remarks |
Aqueous
acid/bases |
|
Ecotrode
Plus |
6.0262.100 |
c(KCl)
= 3 mol/L 6.2308.020 |
|
| alkaline samples |
Unitrode | 6.0259.100 |
c(KCl)
= 3 mol/L
6.2308.020
|
|
| titrations performed at high
temperatures |
Unitrode
|
6.0259.100
|
Idrolyte
6.2308.040
|
|
| titrations with small sample volumes |
Combined
LL micro pH glass electrode
OR
Combined
flat membrane pH glass electrode |
6.0234.100
6.0227.100
|
c(KCl)
= 3 mol/L
6.2308.020
|
Shaft diameter 6.4 mm, minimal immersion depth; 10 mm
Shaft diameter 12 mm, minimal immersion depth; 1–2 mm
|
|
titrations in water with low conductivity
|
Aquatrode
plus | 6.0257.000
|
c(KCl)
= 3 mol/L
6.2308.020
|
Typical application: water
analysis - p&m value etc. |
| |
Perchloric
acid |
See AB 80 and Monograph"Non-aqueous
titration of acids and bases with potentiometric endpoint
indication" |
Solvotrode
- combined LL pH glass electrode, ground-joint diaphragm
(PCTFE) |
6.0229.100 |
c(LiCl)
= 2 mol/L in ethanol 6.2312.010 |
easy to clean sleeve diaphragm
IMPORTANT: When not in daily
use, store in LiCI sat. in ethanol and soak membrane
in distilled water before use. However, when in daily
use, store in distilled water, so that only the membrane
is immersed, not the diaphragm. Before the measurement
lift the diaphragm sleeve slightly and allow a small
amount of electrolyte to flow out. Rinse the electrode
with distilled water, replenish the reference electrolyte
and start the titration (see bottom of chart).
IMPORTANT: Never fill the
Solvotrode with LiCIO4 in glacial acetic acid!
|
TBAOH
|
See AB 80 and Monograph"Non-aqueous
titration of acids and bases with potentiometric endpoint
indication" |
Solvotrode
- combined LL pH glass electrode, ground-joint diaphragm
(PCTFE) |
6.0229.100
|
c(TEABr)
= 0.4 mol/L in ethylen glycol1
6.2320.000
|
Potassium
methylate |
|
Solvotrode
- combined LL pH glass electrode, ground-joint diaphragm
(PCTFE) |
6.0229.100
|
c(TEABr)
= 0.4 mol/L in ethylen glycol1
6.2320.000
|
Cyclohexyl-amine
|
|
Solvotrode
- combined LL pH glass electrode, ground-joint diaphragm
(PCTFE) |
6.0229.100
|
c(LiCl)
= 2 mol/L in ethanol 6.2312.010
|
| |
Silver
nitrate |
AB 25
|
Ag-Titrode,
possibly Ag2S coated
|
6.0430.100
|
|
|
| |
|
arsenite, cerium sulphate, iron (III), iodine, potassium
bromate, sodium nitrite, sodium thiosulphate, oxalic
acid, permanganate, titanium
|
For titrations where
the pH value during the titration doesn't change. |
Pt-Titrode
|
6.0431.100
|
|
Electrode
is also available with a plug-in head S (6.0431.500
) |
| For titrations during
which the pH value changes. |
Combined
LL Pt-ring electrode |
6.0451.100
|
c(KCl)
= 3 mol/L
6.2308.020
|
|
| |
Karl
Fisher reagent |
|
Double
Pt-wire electrode
|
6.0338.100
|
|
|
| |
Cr3+
, Fe2+, |
Also for COD titrations |
Micro
Au-Titrode |
6.0435.110 |
|
L = 160 mm, Loger version available: (6.9904.023), L=
250 mm
|
| |
EDTA
|
Back-titration of the BaCl2 excess. For sulphate
determination see AB 140.
|
Polymer
membrane electrode, Ca2+ |
6.0508.110
|
c(KCl)
= 3 mol/L
6.2308.020
|
a
separate reference
electrode is needed.
Order no: 6.0750.100
|
EDTA
Complexon® III and IV
|
Determination of Al, Ba, Ca, Cd, Bi, Co, Fe, Mg, Ni,
Pb, Zn. See AB 125
|
Ion
selective electrode Cu2+
|
6.0502.140
|
c(KCl)
= 3 mol/L
6.2308.020
|
a separate reference
electrode is needed.
Order no: 6.0750.100 |
| Determination of Ca, Mg, See
AB 125 |
Polymer
membrane electrode, Ca2+
|
6.0508.110
|
|
|
| |
Surfactants in aqueous media |
Tego® trant A 100,2
see AB 233
|
Ionic
surfactant electrode |
6.0507.120
|
c(KCl)
= 3 mol/L
6.2308.020
|
a separate reference
electrode is needed.
Order No: 6.0726.100
|
|
sodium lauryl sulphate, see AB 233
|
«Cationic
surfactant» electrode |
6.0507.150
|
c(KCl)
= 3 mol/L
6.2308.020
|
a separate reference
electrode is needed.
Order No: 6.0726.100 |
|
Sodium tetra phenyl borate, see AB 230, AB 263
|
NIO
surfactant electrode |
6.0507.010
|
Inner chamber of the reference electrode:
c(KCI)
= 3 mol/L (6.2308.020)
Outer chamber: c(NaCL) = 1 mol/L
|
a separate reference
electrode is needed.
Order No: 6.0726.107 |
| |
Non aqueous surfactants |
Nonaqueous media, solvents as Chloroform, MIKB, see
AB 269
|
Surfactrode
resistant |
6.0507.130
|
c(KCl)
= 3 mol/L
6.2308.020
|
a separate reference
electrode is needed.
Order No: 6.0726.107
electrode not suitable for high salt concentrations
and pH > 10 |
|
Nonaqueous media, solvents as MIKB
Two phase titration, see AB 269
|
Surfactrode
refill |
6.0507.140
|
c(KCl)
= 3 mol/L
6.2308.020
|
a separate reference
electrode is needed.
Order No: 6.0726.107
electrode not suitable for Chloroform
|
| |
|
AB = Application
Bulletin
* All these electodes are
equipped with a Metrohm plub-in head G3
1) TEABr
0.4 mol/L tetra ethyl ammonium bromide in ethylene glycol
(6.2320.000) is an electrolyte solution for non-aqueous
titrations. It is very useful when titrating low acid
contents with TBAOH. In such cases the LiCI
sat. in ethanol (6.2312.000) would cause an alkali
error during the measurement. The Solvotrode is a combined
pH glass electrode specially designed for non-aqueous
titrations. This electrode is normally filled with LiCI
sat. in ethanol. However, when titrating with TBAOH
we strongly recommend replacing the CiCI electrolyte
with 0.4 mol/L TEABr in ethylene glycol. This electrolyte
can of course also be used for all other non-aqueous
titrations with various titrants.
2) TEGO trant A 100
6.2317.000 (6 g)
6.2317.010 (60 g)
Available on request 6.2317.020 (500 g)
3 To connect an electrode with plug-in head G to a Titrino
or 726/796
Titroprocessor, use one of the following cables: 6.2104.020
(1 m), 6.2104.030 (2 m) or 6.2104.040 (3 m); to connect
an electrode an electrode with plug-in head S to the
above instruments, use cable 6.2104.510 (1 m). See Metrosensor
Electrode Catalog for additional information.
Storage of the Solvotrode when
not in daily use: Store the Solvotrode in LiCI sat.
in ethanol. Use a normal electrode holder.
More information on Electrodes
> See also: which
electrode for which application?
>
Metrosensor On-line Catalog
>
Metrosensor Electrodes Catalog for download (Info
Center -> Products)
|
