832 KF Thermoprep - Thermal sample preparation in Karl Fischer titration by Metrohm AG
|
Metrohm AG Contact InformationMetrohm AG
Oberdorfstr. 68
CH-9100 Herisau
Phone +41 71 353 85 85
Fax +41 71 353 89 01
http://www.metrohm.com/
info@metrohm.com |
|
|
Searched and found756 kf coulometer 758 kfd 774 kf oven sample processor 832 kf thermoprep manual ag spare parts air and water connections air flow meters air in take air pump application note application note metrohm ascorbic acid built in built in oven dry oven fischer flow control flow meters gas oven gas ovens gas pump gas pumps hermetic seals its not just strong karl karl fischer karl fischer titration kf kf coulometer kf coulometer and oven manual kf coulometer manual kf coulometer reagent preparation kf coulometr kf g 2 kf water content manual metrohm manual metrohm kf manual metrohm oven metrohm thermoprep oven principle of kf coulometer sample septum cover thermoprep titration titration cells titration vessels titrator titrators vial vials water flow control water flow meter water flow meters where is the water pump at you tube water pump flow
|
Similar catalogs to 832 KF Thermoprep - Thermal sample preparation in Karl Fischer titration
|
832 KF Thermoprep - Thermal sample preparation in Karl Fischer titration is listed here
|
Selected page of 832 KF Thermoprep - Thermal sample preparation in Karl Fischer titration
832 kf thermoprep thermal sample preparation in karl fischer titration
| the solution for difficult samples the kf oven method many substances e.g plastics or inorganic salts release their water only slowly or at high temperatures they are therefore not suitable for a direct karl fischer titration an additional problem is the low solubility of certain samples in alcohols in these cases traditional methods recommend the use of toxic solvents to promote dissolution or alternatively extensive sample preparation procedures moreover if the sample is introduced directly into the titration cell the latter can be strongly contaminated which means that it is necessary to exchange the titration solution and clean the cell frequently finally there are various substances e.g ascorbic acid that undergo side reactions with the kf reagents thus falsifying the result by using the kf oven method the above-mentioned problems can be avoided the substance under investigation is heated in a tube oven and the released water is transferred by a carrier gas to the titration cell w
| a fully developed concept sophisticated construction the 832 kf thermoprep is a very compact instrument oven heating block gas pump flow meter and flow controller are all integrated as are two drying flasks easy sample preparation sample preparation is straightforward and only consists of weighing the sample into the sample vial which is then sealed using the crimping tool the hermetic sealing of the vessels with ptfe-coated septa reliably prevents any interference by moisture uptake from the ambient air refined methodology the vessel containing the sample to be analyzed is positioned above the oven and lowered into the heating block at the same time a double hollow needle pierces the septum of the sample vial via the inlet needle a stream of dry carrier gas air or inert gas is passed through the heated sample the carrier gas loaded with the released moisture then flows through the outlet needle and the connected tube directly into the titration cell where the karl fischer water determ
| full flexibility accommodates sample vessels of different sizes as an option there is the possibility to modify the oven of the 832 kf thermoprep such that you can use not only the metrohm standard sample vials but also those used in your production plant multiple application possibilities in principle the 832 kf thermoprep can be used for all samples that release water at elevated temperatures however it is particularly valuable when a direct volumetric or coulometric karl fischer titration is not possible you can determine the water content of solids be they powders or granules liquids of different viscosities plus also pastes and fats the 832 kf thermoprep is particularly suitable for small numbers of samples if on the other hand large sample series are to be analyzed the 774 oven sample processor is the ideal solution take advantage of our know-how in the field of karl fischer titration in the internet under www.metrohm.com you will find our application notes as well as the list of
|
|
|
All copyrights remain by their owners. Who-sells-it.com is not an official partner of Metrohm AG.
|
