The Metrohm Surf Titrando Ionic is based on the 905 Titrando and offers a complete package for the most common analyses of ionic surfactants.
Traditionally, surfactant titrations have been performed using the classic Epton titration method.
This method, although universally accepted, has several restrictions associated with it.
Chloroform is used in this titration, which is now deemed hazardous, and due to the nature of the titration it could not be automated.
The Metrohm Surf Titrando Ionic is based on the 905 Titrando and offers a complete package for the most common analyses of ionic surfactants.
Apart from the titration software Tiamo Light and determination methods described in detail, users will also receive comprehensive accessories.
Many electrodes have been designed to be used for this titration; some have been successful (and some not so successful).
Several electrodes appear to work well in standard solutions but when cationic or anionic surfactants levels need to be determined in a complete formulation (for example, washing powders, shampoo, conditioners) it has proven difficult.
The Surfactrode Refill Electrode is able to titrate in these difficult matrices even at high betain levels.
The chloroform has disappeared, and in many cases has been replaced with water, or a small amount of MIBK.
More importantly, the results obtained correspond exactly to that of the Epton titration, and because of this the electrode has been accepted by the European and American test panels (ISO and ASTM) as the industry norm.
