Login

Calculations helpModerator: BioTeam
7 posts
• Page 1 of 1
Calculations helpHi i was wondering if you can help me i have a total volume of 400ul. I have a reagent that is 100ng/ml in 20ug/ml stock. I was wondering what is the volume of the reagent i need to add to the 400ul. Can you also show me the calculations
use the simplest formula ever c1V1 = c2V2
the stock is 20 ug/ml and final conc. should be 100 ng/ml, right? So, c1 = 100 ng/ml; V1 = 400 ul; c2 = 20 ug/ml and V2 you calculate Otherwise you can think, that you need to dilute it 20 000/100 = 200times, so the volume must be 200times smaller i.e. 400/200 = 2 ul http://www.biolib.cz/en/main/
Cis or trans? That's what matters.
Thanks for your help. I also need help with this: The reagent is 1mg/ml in PBS that is 500x there is a aliquot of 5x0.1ul. I was wondering how much would i need to add to a 50ml solution. I would be grateful if you can show me the calculations aswell thank you
Re:
50/500= ? That is what 500x mean, divide your final volume by the concentration factor (here 500) and you know how much to use. Patrick
Science has proof without any certainty. Creationists have certainty without any proof. (Ashley Montague)
7 posts
• Page 1 of 1
Who is onlineUsers browsing this forum: No registered users and 0 guests 
© BiologyOnline.org. All Rights Reserved. Register  Login  About Us  Contact Us  Link to Us  Disclaimer & Privacy  Powered by CASPION