De filmpjes van practicum 3 zijn beschreven, dit kan ook als hulpmiddel dienen bij het oefenen voor de competentietest van een verdunning of oplossing.
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Analytisch pipeteren
1. Spoelen met gedemineraliseerd water
2. Pipet: voorspoelen met de oplossing => in totaal 3x (wees zuinig, maar zorg dat tot boven te
ijkstreep is voorgespoeld
3. Oplossing opzuigen tot 1 cm boven de ijkstreep
4. Droog de pipet af (punt-buik)
5. Neem afvalmaatbeker => houdt deze onder een hoek van 45°
6. Laat vloeistof niveau dalen tot de ijkstreep (onder 90°)
7. Pipet onder 45 graden op het glaswerk => doe pipetterballon ervan
8. Laat de pipet leeglopen => opgepast er blijft een druppel over; niet schudden
9. Wand glaswerk nagespoeld met gedemineraliseerd water
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