Does this calculation look correct? My goal isto have a target mass of 10 µg of my protein with a total volume of 30 µl. Protein was measured and found to have a concentration of at 308.35 µg/ml Recall, mass = concentration * volume 10 µg = 308.35 µg/ml * V V = 0.01 mg/ 0.30835 mg/mL = 0.032430679 mL = 32.43067942 µL Note: cannot measure this amount; two dilutions required. Dilute by 1/40: measure 2.5 µl of protein at 0.30835 µg/µl and add it to 97.5 diluent to prepare a solution of protein at 7.71 mg/ml. This diluted sample will be used further. Mass = concentration * volume 10 µg = 7.71 mg/ml * V V = 0.01 mg/ 7.71 mg/ml = 1.3 µL Therefore, will measure 1.3 µl of protein at 7.71 mg/ml and add it to 28.7 µl of diluent.

Curren'S Math For Meds: Dosages & Sol
11th Edition
ISBN:9781305143531
Author:CURREN
Publisher:CURREN
Chapter14: Formula Method
Section: Chapter Questions
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Does this calculation look correct?

My goal isto have a target mass of 10 µg of my protein with a total volume of 30 µl.

Protein was measured and found to have a concentration of at 308.35 µg/ml

Recall, mass = concentration * volume

10 µg = 308.35 µg/ml * V

V = 0.01 mg/ 0.30835 mg/mL = 0.032430679 mL = 32.43067942 µL

Note: cannot measure this amount; two dilutions required.

Dilute by 1/40: measure 2.5 µl of protein at 0.30835 µg/µl and add it to 97.5 diluent to prepare a solution of protein at 7.71 mg/ml. This diluted sample will be used further.

Mass = concentration * volume

10 µg = 7.71 mg/ml * V

V = 0.01 mg/ 7.71 mg/ml = 1.3 µL

Therefore, will measure 1.3 µl of protein at 7.71 mg/ml and add it to 28.7 µl of diluent.

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