When sampling the extract in order to obtain the portion to be ashed, take care not to disturb or agitate the extract.

When sampling the extract in order to obtain the portion to be ashed, take care not to disturb or agitate the extract.

• A. True
• B. False
• C. Not specified
• D. Disturbing the extract is recommended

Answer: (B)

The key idea here is getting a representative sample from the extract. If you leave the extract undisturbed, solids can settle and layers can form, so the portion you withdraw may not reflect the overall composition. Gentle agitation or mixing distributes both solids and dissolved components so that any portion you take for ashing truly represents the whole extract. After mixing, withdraw the sample carefully to avoid loss or re-separation. So, the statement that you should not disturb or agitate the extract is not correct.

The key idea here is getting a representative sample from the extract. If you leave the extract undisturbed, solids can settle and layers can form, so the portion you withdraw may not reflect the overall composition. Gentle agitation or mixing distributes both solids and dissolved components so that any portion you take for ashing truly represents the whole extract. After mixing, withdraw the sample carefully to avoid loss or re-separation. So, the statement that you should not disturb or agitate the extract is not correct.