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4.3 Determinations

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892 Professional Rancimat

Inserting the measuring vessels

￭ Place the clean measuring vessel covers equipped with a PTFE

cannula on the measuring vessels.

￭ Insert the measuring vessels with the measuring vessel covers into

the openings provided for this on the 892 Professional Rancimat

while carefully guiding the connector plugs of the cover into the

electrode connectors.

Weighing in samples

NOTICE

Use new reaction vessels and air tubes for each measure-

ment. Blow out the reaction vessels with nitrogen before use so

that any adhering particles are removed.

￭ Weigh in 3 g of the samples in each reaction vessel (see chap-

ter 4.3.1, page 31).

Mounting the accessories

￭ Hold the upper edge of the reaction vessel in your hand (e.g. in

the recess between your thumb and index finger) and rotate the

glass once.

This serves to cover the degreased glasses with a light fat film so

that the vessel covers can be removed more easily after the deter-

mination.

￭ Insert an air tube into the connector of the reaction vessel cover,

fix it with the O-ring and fasten it by screwing in the M8/M6

thread adapter.

￭ Place the reaction vessel cover on the reaction vessel. Turn the

cover in such a way that the air tube is as close as possible to the

vessel wall.

￭ Connect the white silicone tubing to the tubing connector of the

reaction vessel cover.

￭ Place the prepared reaction vessel in the vessel holder.

4.3.3 Preparing the determination

Selecting the method (StabNet)

￭ In the Workplace program part, click on the symbol within the

block A area and select a Method for block A.

￭ If required, also select a method for block B.

Metrohm 892 User Manual

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