Hello Eva
 
Put simply
 

1nmol is 10-9 moles 
Therefore 10nmol is 10-8 moles
1 mole = 1,064g
Therefore 10-8 moles = 0.00001064g    or     0.01064mg
Therefore your working solution of 10nmol/ml = 0.01064mg/ml
 
Your stock solution is 1mg/ml
Therefore your dilution factor is             1.0                   =          
94 (93.984962 exactly)
                                                            0.01064
 
Therefore you can add 1ml stock to 93ml of diluent to get your desired 
concentration..
 
 I hope this is useful
 
regards
 
 
 
Tony Reilly

Chief Scientist
Anatomical Pathology
Pathology Queensland
Level 1, Building 15
Princess Alexandra Hospital
Ipswich Rd, 
Woolloongabba Q 4102
Australia
Ph: 07 32402412
Fax:07 32402930
[email protected]


>>> <[email protected]> 8/01/2009 7:46 am >>>
Good afternoon,
I am hoping someone out there will take pity on a "mathematically" challenged 
individual such as myself. I have been trying for hours to wrap my head around 
this equation and am now getting to the point where I am more confused than 
ever. Please help me.
The protocol calls for 10nmol of a substance per 1ml needed. It comes in a 
1mg/ml solution and has a molecular weight of 1064g/mol. How do I do this? If 
for example I needed 2ml of the solution...
The clearer the explanation the better. I really want to understand the 
calculation not just have an answer. PLEASE HELP ME.
Thank you,
Eva

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