If I make a 1:10 dilution, take 0.2 ml of it, and add 0.8 ml of buffer to it, what is the new dilution?

Name: If I make a 1:10 dilution, take 0.2 ml of it, and add 0.8 ml of buffer to it, what is the new dilution?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The initial 1:10 dilution means 1 part sample to 9 parts diluent. Taking 0.2 ml of this and adding 0.8 ml buffer results in a total volume of 1 ml (0.2 ml + 0.8 ml). The 0.2 ml is 1/5 of the total 1 ml, so the new dilution is 1:50.

If I Make a 1:10 Dilution, Take 0