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6.0262.100 Ecotrode Plus6.0262.100 Ecotrode Plus: It could hardly be any better!Metrohm Ltd. is the market leader in titration, our titrators «Made in Switzerland»set the standards throughout the world. The electrode, the heart of every titrationsystem, must also meet these high demands as otherwise the investment in thetitrator would be in vain. For many years now the 6.0232.100 Ecotrode has beenour well-proven «workhorse» for routine pH titration. It offers a very attractive priceperformanceratio; however, the ceramic pin diaphragm limits its use to precipitatefreesamples.Universally applicable, enduring and rapid: the new6.0262.100 Ecotrode Plus.The Ecotrode Plus with fixed ground-joint diaphragm –the new standard for pH titration!The continually increasing success of our Unitrode and Aquatrode Plus in pH measurementshows that the fixed ground joint is the more universal type of diaphragm.It is largely insensitive to contaminants and requires only minimal maintenance.The fixed ground-joint diaphragm is suitable for a wide range of samples, fromclear, ion-deficient solutions up to highly concentrated suspensions or emulsions.Its greatest strength, however, is its precision: The fixed ground-joint diaphragm allowslow-noise potential measurements that depend only to a minimal extent on theionic strength and stirring speed, thus meeting the crucial requirements for a rapidand precise titration.In order to utilize the advantages of the fixed ground-joint diaphragm to the full extentin titrations, a new type of membrane glass has also been developed for theEcotrode Plus. In addition to a short response time*, this membrane glass exhibitsexcellent long-term behavior; even if used continuously, it is largely unaffected byaging. With the Ecotrode Plus you document the changes in the sample and not theaging of the electrode!The 6.0262.100 Ecotrode Plus is the result of 60 years’ experience in pH measurementtechniques, ultramodern production technology «Made in Switzerland» andour continuous striving to optimize our products. In many ways this new Metrosensorrepresents a clear improvement of our time-tested 6.0232.100 Ecotrode.* By the way: Rapidity is not witchcraft, but rather a question of correct electrodestorage! For the Ecotrode Plus, just as for all other combined pH glasselectrodes with c(KCl) = 3 mol/L as the reference electrolyte, Metrohm recommendsthe patented 6.2323.000 storage solution. This solution prevents the agingof the glass membrane and thus guarantees short response times over longperiods of time.Technical specificationspH range 0...13Temperature range 0...80 °CShaft length125 mmShaft diameter12 mmShaft materialSoft glassMinimum immersion depth15 mmElectrode headMetrohm plug-in head GMembrane glassE glassMembrane shapeHemisphericalDiaphragmFixed ground jointReference electrolytec(KCl) = 3 mol/LElectrolyte outflow5...30 µL/hReference systemLL system20 Metrohm Information Issue 2/2005
SpectrosenseSpectrosense – the new Metrosensors for photometric titrationTitration with photometric indication is applied in a large number of titration methods.It is based on color changes at the equivalence point and is used when• potentiometric equivalence-point indication is not possible,• no suitable potentiometric indicator electrode is available,• an official method prescribes photometric indication,• the electrode signal is disturbed by sample matrix effects,• one wishes to profit from the economical advantages offered by the photometricmethod compared to more expensive techniques, such as AAS or ICP-AES,• easy handling, quick and precise measurements are of prime importance.The new Spectrosense electrodes allow you to benefit from the advantages of photometrictitration in an optimal way. Depending on the application, you choose oneof the two wavelengths available, 523 nm or 610 nm. Modern LEDs serve as thelight source; they have an average operating time of 50’000 hours and their lightintensity remains high even after long operating times.The new Spectrosense is not only outstandingly robust, but also very easy to handle.It can be connected to a Titrino or Titrando like an ordinary electrode. Poweris supplied from the stirrer connection of the Titrino or the MSB connection of theTitrando. If required, an external power adapter can also be used.Photometric titrations with the Spectrosense – typicalapplicationsThe new Spectrosense – the above photo shows theversion 6.1109.110 with a wavelength of 610 nm – ischaracterized by its robustness, compact design andeasy handling. (The scope of delivery of the 6.1109.110does not include the mirror screwed onto the electrodeshaft.)Species Matrix Color indicator WavelengthdeterminedAl Sodium borate Xylenol orange 523 nmFree chlorine Water N,N-Diethyl-1,4-phenylenediamine 523 nmAcid number Plastic material Phenolphthalein 523 nmSulfate Fertilizer Thorin 523 nmVitamin C Tablets Dichlorophenol indophenol 523 nmBa / Y / Cu Superconductor Dimethylsulfonazo III 610 nmTraces of Ca Brine Hydroxy naphthol blue 610 nmCa / Mg Dolomite Eriochrome black T / HHSNN 610 nmFe Mn ores Diphenylaminosulfonate 610 nmZn Ni baths Murexide 610 nmλPhotometric titration with the 836 Titrando and 610 nmSpectrosense.Metrohm Information Issue 2/2005 21
- Page 1 and 2: E-Mail: info@metrohm.com Internet:
- Page 3 and 4: EditorialBrief portrait of Dr. Chri
- Page 5: Third-party instruments in tiamofro
- Page 8 and 9: 844 UV/VIS Compact ICIn the 844 UV/
- Page 10 and 11: IC-MS systemA powerful combination:
- Page 12 and 13: New separation columns for ICNew IC
- Page 14 and 15: Metrosep A Supp 10In focus: the new
- Page 16 and 17: Metrosep A Supp 10As the examples s
- Page 18 and 19: Biogenic amines in fishIn order to
- Page 22 and 23: SpectrosenseTechnical specification
- Page 24 and 25: DIN EN 14480Schematic diagram of th
- Page 26 and 27: New Metrohm publicationsProf. Dr. L
- Page 28 and 29: Book cornerBook cornerRobert A. Kel
- Page 30 and 31: Literature referencesLiterature ref
- Page 32 and 33: The CIA 2005 in retrospectThe 3 rd
- Page 34 and 35: Metrohm worldwideTrade fairs and co
- Page 36: Another world’s firstby Metrohm84
SpectrosenseSpectrosense – the new Metrosensors for photometric titrationTitration with photometric indication is applied in a large number of titration methods.It is based on color changes at the equivalence point and is used when• potentiometric equivalence-point indication is not possible,• no suitable potentiometric indicator electrode is available,• an official method prescribes photometric indication,• the electrode signal is disturbed by sample matrix effects,• one wishes to profit from the economical advantages offered by the photometricmethod compared to more expensive techniques, such as AAS or ICP-AES,• easy handling, quick and precise measurements are of prime importance.The new Spectrosense electrodes allow you to benefit from the advantages of photometrictitration in an optimal way. Depending on the application, you choose oneof the two wavelengths available, 523 nm or 610 nm. Modern LEDs serve as thelight source; they have an average operating time of 50’000 hours and their lightintensity remains high even after long operating times.The new Spectrosense is not only outstandingly robust, but also very easy to handle.It can be connected to a Titrino or Titrando like an ordinary electrode. Poweris supplied from the stirrer connection of the Titrino or the MSB connection of theTitrando. If required, an external power adapter can also be used.Photometric titrations with the Spectrosense – typicalapplicationsThe new Spectrosense – the above photo shows theversion 6.1109.110 with a wavelength of 610 nm – ischaracterized by its robustness, compact design andeasy handling. (The scope of delivery of the 6.1109.110does not include the mirror screwed onto the electrodeshaft.)Species Matrix Color indicator WavelengthdeterminedAl Sodium borate Xylenol orange 523 nmFree chlorine Water N,N-Diethyl-1,4-phenylenediamine 523 nmAcid number Plastic material Phenolphthalein 523 nmSulfate Fertilizer Thorin 523 nmVitamin C Tablets Dichlorophenol indophenol 523 nmBa / Y / Cu Superconductor Dimethylsulfonazo III 610 nmTraces of Ca Brine Hydroxy naphthol blue 610 nmCa / Mg Dolomite Eriochrome black T / HHSNN 610 nmFe Mn ores Diphenylaminosulfonate 610 nmZn Ni baths Murexide 610 nmλPhotometric titration with the 836 Titrando and 610 nmSpectrosense.<strong>Metrohm</strong> Information Issue 2/2005 21
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