You are Here: Home

# Calculating percentage error of volumetric flask

1. If you're using a normal 250ml grade B volumetric flask how do you know what its tolerance and percentage error is? Also if the tolerance was + or - 0.3 would you find the percentage error by doing 0.3/ 250?
2. Have a look at this website I just found:

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

(0.40/250)x100 = 0.16%
5. (Original post by -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...

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: October 18, 2008
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### Struggling with revision?

Use our free tools and resources

### Do you need to be smart to get into Oxbridge?

Poll
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.