Hanna-instruments HI 83225 Manuel d'utilisateur télécharger pdf (Page 21)

• Fold a filter disc twice as shown in the figure. Separate one side from the other three to form a cone.

Insert the folded filter disc in the funnel.

• Filter the treated sample into an empty beaker.

The sample is now ready.

Note: Filter at least 40 mL of solution if all the four methods will be tested. If the solution is still turbid

or colored, treat it again with a packet of active carbon. After use, throw the filter disc away and wash

the syringe and the filter assembly well. Always use a new disc for another sample.

NUTRIENTS SOLUTION (MR):

• Use the graduated cylinder to measure exactly 20 mL of sample.

• Remove the cap and fill the Demineralizer Bottle with tap water.

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Hanna-instruments HI 83225 Manuel d'utilisateur Page 21