Metrohm's 855 Titrosampler can rinse sample racks which have up to 100 individual sample places.
The rinsing is carried out in an external vessel outside of the sample rack where complex rinsing and aspirating procedures can be programmed using suitable solvents and hot water if necessary.
The system is able to rinse hair-removal creams, mascaras, eye gels, suntan creams, cosmetics such as cream foundations, and toothpastes.
The 855 is also an autotitrator and sample changer on which sample processing and analysis can be carried out.
Rinsing the sample from off the shaft of the electrode is carried out using a wash bottle and is undertaken until all contamination is removed.
Feeding the rinsing station are high-velocity rinsing jets which blast contamination from the electrode with water or a solvent.
There is a propeller stirrer for optimal rinsing solution agitation which can change stirring direction as many times as necessary, and peristaltic pumps for removing solid contamination.
Using Tiamo controlling software, bespoke rinsing protocols can be written for each sample type to ensure all contamination is removed.
The electrode is mounted on a swing arm that swings to the external rinsing station after sample measurement so that issues associated with immersing the stirrer in each sample and subsequent rinsing requirements are eliminated.
The 855 Robotic Titrosampler is a combination of the Titrando sample processor and Tiamo titration software.
The combination of automation and titration saves up to 40 per cent of the normally required space, with identical functionality and unchanged flexibility.
The Titrosampler incorporates all the functions of the Robotic USB Sample Processors XL and undertakes the pH measurement potentiometric determination of a sample with the accuracy of a Titrando.
As a titrator, the 855 Robotic Titrosampler undertakes: dynamic titration (DET), monotonic titration (MET), titration to a preset endpoint (SET),and enzymatic and pH-STAT titration (STAT).
The direct measurement of pH values or concentrations of a wide range of ions are also included in the instrument.
The standard addition technique for ion-selective measurements is available as an additional mode.
With the Dosing Unit of the Dosino - up to three Dosinos can be controlled simultaneously - the titrant or an auxiliary solution can be added at a high volume resolution.
The titrant-monitoring feature supports the user during routine analyses and prevents the use of incorrect or expired solutions.
The titrosampler is also a sample changer that carries out measurements and potentiometric titrations without neglecting laboratory automation.
It dilutes samples automatically and adjusts pH with the addition of a buffer solution.
It can also carry out pipetting by taking an accurately defined portion of the sample solution and determining it in an external titration vessel.
The control of the titrating sample changer takes place via a USB connection.
As only one instrument is used for automation and titration, the programming is also easier.
System control can take place as required with PC Control 4.0 control software, enabling construction of complex rinsing protocols for different samples.
The 855 Robotic Titrosampler complete package or building block titration and automation systems have been predefined for routine analyses with up to 140 samples.
The built-in membrane pumps or the external peristaltic pump can carry out a range of procedures from rinsing to conditioning the electrodes.
Tiamo titration software is included in the standard equipment and guarantees easy programming and accurate data management, according to the company.
The basic version can be extended with a range of accessories.
The Titrosampler is equipped with one workstation including 786 Swing Head for high sample throughput as well as built-in membrane pumps or the corresponding pump connections for peristaltic pumps.
The system can be extended to become an all-rounder for mastering any demand.
An additional peristaltic pump and external rinsing station are required for pH measurement.
