The Student Room Group
Reply 1
Have a look at this website I just found:
http://www.jaytecglass.co.uk/GradeBVolumetricFlasks.php

It says a grade B 250ml volumetric flask has an accuracy of ±0.30ml.

% error = (apparatus error)/(reading) x 100
= ( 0.3 / 250 ) x 100
= 0.12%

Hope that helps.. :smile:
Volumetrics in the lab I use are 250 ±0.40ml
i.e 1.6% error
Reply 3
A 1.6% error? I could be wrong, but don't you mean a 0.16% error?

(0.40/250)x100 = 0.16%
-David-
A 1.6% error? I could be wrong, but don't you mean a 0.16% error?

(0.40/250)x100 = 0.16%


you are right...

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