|קארל פישר בשילוב השימוש בתנור מאפשר מדידה מדויקת של תכולת מים
בחומרים שונים שאינם אפשריים במדידה ישירה.
860 KF Thermoprep ? simple, safe and precise sample preparation
The 860 KF Thermoprep is the new Metrohm instrument for thermal
sample preparation in Karl Fischer titration. It can be combined
with a wide range of titrators for volumetric and coulometric
Benefits of thermal sample preparation
The 860 KF Thermoprep heats the substance under investigation in
a hermetically sealed vessel. The moisture liberated from the
sample is transferred via a carrier gas stream into the titration
cell where it is determined. This means that the 860 KF
Thermoprep is the ideal instrument for reliable analysis of
«difficult» samples, such as plastics or salts, which release
their water very slowly or only at elevated temperatures and are
therefore not suitable for direct KF titration. As the sample
does not enter the titration cell, side reactions with the KF
reagents used are excluded.
Simple operation, high occupational safety
אישמלד אם איק בךקשרךט שררשמעקג צקמו משהןעשאןםמת שךך פשרשצקאקרד
בשמ נק set with just a few keys to suit individual requirements.
The sophisticated design of the 860 KF Thermoprep prevents the
needle from descending outside the septum. In most cases the oven
method requires no toxic solvents, so no harmful solvent vapors
can escape into the lab.
Precise results made easy
The 860 KF Thermoprep ensures identical analysis conditions for
each sample. Vessels tightly sealed with a PTFE septum (headspace
vials) guarantee a constant, unadulterated water content even
after longer periods of storage. The heated transfer tubing
prevents water vapour condensation and ensures that all the
moisture arrives in the titration cell and is determined there.