Electrodes_for_Titration.pdf

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Application Specifics Electrode Order no.

Aqueous acid/base titrations

General Ecotrode Plus 6.0262.100

Alkaline samples, Bayer liquorsTitrations performed at high temperatures

Unitrode 6.0259.100

Acidity of alcoholic beverages Unitrode (with Pt 1000) 6.0258.010

Titr ations with small sample volumes Flat membrane pH electr ode 6. 0256.100

Electroplating and etching baths containing fluorideor hydrofluoric acid

Combined Sb electrode 6.0421.100

Carbonate hardness, acid capacity of water,p- & m-value

Aquatrode Plus (with Pt 1000) 6.0257.000

Electroplating baths Profitrode 6.0255.100

Titrations in water having a low conductivity Aquatrode Plus 6.0253.100

Protein-containing samples Porotrode 6.0235.200

Non-aqueousacid/basetitrations

Determination of the acid number (TAN) of mineraloils, titrations with alcoholic KOH , NaOH and TBAOH,potassiummethylate, free acids; hydroxyl number ofoils and fats

Solvotrode (c(TEABr) =0.4 mol/L in ethylene glycol)

6.0229.100(6.2320.000)

Determination of the base number (TBN) of mineraloils, titrations with perchloric acid, cyclohexylamine,alcoholic HCl

Solvotrode (LiClsat

in ethanol)6.0229.100(6.2312.000)

RedoxtitrationsArsenite

Cerium sulfateIron(III)IodinePotassium bromateSodium nitriteOxalic acidPermanganateThiosulfateTitanium(III)Hg(NO

3)

2

Titrations in Ipol

mode Double Pt-wire electrode 6.0341.100

Redox titrations at varying pH value Combined LL Pt-ring elec trode 6. 0451.100

Chemical oxigen demand in water (ferrometry) Combined LL Au-ring electrode 6.0452.100Penicillin, Ampicillin Combined LL Au-ring electrode 6.0452.100

Titrations at constant pH value Pt Titrode 6.0431.100

Bromatometry, iodometry, cerimetry according toPharm. Europe & U.S.P.

Pt Titrode 6.0431.100

Karl Fischertitrations

Water content according to Karl FischerDouble Pt-wire electrode(HF-resistant version on request)

6.0338.100

Application Specifics Electrode Order no.

PrecipitationtitrationsSilver nitrate

Chloride in general, sodium chloride in food Ag Titrode 6.0430.100

Chloride in dialysi s and in fusion solut ions Ag T it rode wi th Ag2S coating 6.0430.100S

Titrations according to Pharm. Europe & U.S.P. Ag Titrode with Ag2S coating 6.0430.100S

Determination of hydrogen sulfide, mercaptans,carbonyl sulfide, sulfides

Ag Titrode with Ag2S coa ti ng 6 .0 43 0.10 0S

Chloride, bromide, iodide and cyanide inelectroplating baths

Ag Titrode with Ag2S coa ti ng 6 .0 43 0.10 0S

Fluoride/hydrofluoric acid in etching baths Ion-selective electrode F 6.0502.150

Complexo-metrictitrations withEDTA, ComplexonIII and IV

Back-titration of the Ba2+e xces s w it h E DTA Io n- se le ct iv e el ec trod e C a2+ 6.0508.110

Determination of Ca2+, Mg2+ (Application Bulletin 125) Ion-selective electrode Ca2+ 6.0508.110

Determination of Al, Ba, Bi, Ca, Cd, Co, Fe, Mg, Ni,Pb, Zn (Application Bulletin 101) Ion-selective electrode Cu2+ 6.0502.140

Photometrictitrations

With indicators such as Xylenol Orange, N,N-Diethyl-1,4-phenylenediamine, Phenolphthalein, Thorin,Dichlorophenol indophenol

Spectrosense 523 nm

6.5501.100 (Titrino)6.5501.200(Titrando, Titrinoplus)

With indicators such as Dimethylsulfonazo III,Hydroxy Naphthol Blue, Eriochrome Black T, HHSNN,Diphenylaminosulfonate, Murexide

Spectrosense 610 nm

6.5501.110 (Titrino)6.5501.210(Titrando, Titrinoplus)

Surfactants innon-aqueous

mediaAromatic/aliphatichydrocarbons,ketones,chloroethanes,methylisobutylketone

Titration of anionic and cationic surfactants, titrationsin chloroform, surfactant formulations containing oils,

pH 10

Surfactrode Refill 6.0507.140

Surfactantsin aqueousmedia

Titration of cationic surfactants Cationic Surfactant 6.0507.150

Titration of anionic surfactants Ionic Surfactant 6.0507.120

Titration of non-ionic surfactants, titrationof pharmaceutical ingredients with sodiumtetraphenylborate

NIO Electrode 6.0507.010

Electrodes for titration

Which electrode for which application?

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Practical tips, care and maintenanceEcotrode Plus Unitrode Aquatrode Plus Profitrode Solvotrode Porotrode Ag/Pt/Au Titrodes

Combined Ag/Pt/Auelectrodes

SurfactrodesSurfactantelectrodes

Spectrosense

Fixed ground-jointdiaphragm

Insensitive tocontamination

Attractive price/

performance ratioOrdering info

6.0262.100


Very low alkali error


High temperatureresistance

Ordering info

6.0259.100without cable

6.0258.010 (with Pt1000) with fixed cable,plug F+2 x 2 mm


Rapid response in ion-deficient or weaklybuffered solutions


Ordering info

6.0253.100without cable

6.0257.000 (with Pt1000) with fixed cable,plug F+2 x 4 mm

Ground-jointdiaphragm

For difficult matrices

Double-junctionconstruction

Ordering info

6.0255.100 (Fittinglength = 113 mm)



Ground-jointdiaphragm

For titrations in non-aqueous matrices

Rapid response in

organic solventsElectrically shielded

Ordering info

6.0229.100

Ceramic capillarydiaphragm

For protein-containingor viscous samples

Reference electrolyte:

Porolyte (6.2318.000)Ordering info

6.0235.200

Maintenance-free pHglass reference system

Also available asmicro-electrodes with6.4 mm diameter

Ordering infoAg Titrode 6.0430.100

Pt Titrode 6.0431.100

Micro-Au Titrode6.0435.110

Ceramic-pindiaphragm

For precipitation orredox titrations withchange of pH value

Ordering infoAg: 6.0450.100

Pt: 6.0451.100

Au: 6.0452.100

For surfactanttitrations in non-aqueous media

SurfactrodeResistant

(6.0507.130)Resistant tochloroform and manyother solvents

Surfactrode Refill(6.0507.140)

Refillable surfactantelectrode, thuspractically unlimitedworking life

Not resistant tochloroform

For surfactanttitrations in aqueousmedia

NIO Electrode(6.0507.010)

For titration of non-ionic surfactants

Ionic Surfactant(6.0507.120)

Optimized for anionicsurfactants

CationicSurfactant(6.0507.150)

Optimized for cationicsurfactants

Two wavelengthsavailable:523 and 610 nm

Power supplied bytitrator, no separate

power adapterneeded.

Ordering info

Titrino:

6.5501.100 (523 nm)6.5501.200 (610 nm)

Titrando, Titrino plus:

6.5501.110 (523 nm)6.5501.210 (610 nm)

all cables included

Store in 6.2323.000storage solution only!

Do not wipe electrode!

Use 6.2308.040Idrolyte for titrationsat temperatures80...100 C or in

samples containingorganic solvents.

Rinse with water orethanol to removecontamination.


Unitrodes filled withc(KCl) = 3 mol/Lshould be stored in6.2323.000 storagesolution.

Store in 6.2323.000storage solution only!


Store in bridgeelectrolyte.

If the sleeve ring isblocked, place theelectrode in hot waterand try again.

Spare ground-jointdiaphragm:

Order no. 6.1243.020

Store in referenceelectrolyte

Condition in dist.water before nexttitration (glassmembrane only!).

If the sleeve ringis blocked, placeelectrode in hot waterand try again.

Alternative electrolytes:c(LiCl) = 2 mol/L inethanol (6.2312.010)

c(TEABr) = 0.4 mol/Lin ethylene glycol(6.2320.000)

Store in 6.2323.000storage solution.

Rinse with water orethanol to removecontamination.

Store in distilled wateronly.

Testing of theelectrodes accordingto AB48.

Also available withAg

2S or Ag-halide

coating.

Store in referenceelectrolyte.


Also available withAg

2S or Ag-halide

coating.

Allow a few titrationsfor conditioning of theSurfactrodes.

Reactivate SurfactrodeResistant with fine-grained sandpaper ifresponse is poor.


Rinse with dist. wateror 20% methanol inwater.

Wipe carefully witha methanol-soakedtissue to removeany adheringcontamination.

Do not use in organicmatrices or at tem-peratures >40 C!


Allow three minutesfor warming up theLED.

Clean mirror withsoft cloth only; do nottouch with fingers.

8.0

00.6

003EN

2008-07

Documents

Electrodes_for_Titration.pdf