what is meant by the term seial dilution?

Answer 1

Serial dilution is a means of diluting a solution in a series of steps to minimise the additive errors associated with volumetric equipment.

Answer 2

Seial seems to be a kind of ethernet port (http://www.seial.com/) I can't see how that can be diluted.

If you mean serial dilution I have found this useful website which has a diagram as well as an explaination:
http://biology.kenyon.edu/courses/biol09/tetrahymena/serialdilution2.htm
And this site which goes into greater detail
http://www.accessexcellence.org/AE/AEPC/WWC/1993/serial.html

Answer 3

I assume you meant serial dilution. If you want to make many dilutions of a compound, you start with the most concentrated one, let's say it's 0.128 M. Now you put 1 mL of water into a number of test tubes and you put 2 mL of this solution into one last test tube. you take 1 mL of this and put it into one of the tubes containing 1 mL of water. You have cut the concentration in half and you now have 1 mL of 0.128 M compound and your new 2 mL mixture of 0.064 M solution. You take 1 mL of this new solution and drop it into another tube of 1 mL pure water. You have cut the concentration in half again.

At the end, depending on how many dilutions you want, you will have 1 mL of each of 0.128 M, 0.064 M, 0.032 M, 0.016 M, ... solutions.