DILUTIONS AND STANDARDS

A serum specimen was diluted 1:20 and then 2 mL of that was diluted to 10mL, and 1 mL of that was added to 4 mL using H20. Exactly 2 mL of this last dilution was discarded, and the remainder was diluted to 30 mL. What was the final dilution of the serum specimen? Read each portion carefully. 1/20 x 2/10 x 1/5 x 3/30 = 6/30,000 = 1/5,000 or 1:5000 ................
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