Burettes - class A or class B

[MTW]

I was wondering what type of burettes you provide for your practical chemistry classes - class A or class B? I am thinking of using class A for A level classes and type B for all other requirements - I'd be really glad of your advice. Many thanks in advance.

 

[Peter Sigsworth]

We only do up to GCSE and class B works for that level.

 

[martin]

We do up to A level, and class B is good enough for those as well. Just about to do the titration between Sodium Carbonate and HCl, and using class B. Also they are cheaper.

 

[Rock Chick]

Class B for all years. As long as the students use the same burette for all the runs of a titration any inaccuracy in the burette will result in a systematic error rather than a lack of precision. The difference between class A and class B is negligible in any event.

 

[Beck B]

Class A glassware is only really used in industry, Class B is fine for educational purposes

 

[chris vaudin]

Maybe have one set of class A for your own use, class B should do for everything else - if your students are like ours, the uncertainties in weighing etc will be much bigger than uncertainties in class B glassware.

 

[Steve B]

we only use class B no point paying the extra for class A when students are not that accurate when using them.

 

[Fallout_Girl]

We use class B for all years including sixth form.

 

[MTW]

Thank you for all your replies - I am very grateful for your expertise, and will be passing this info on to my HOD.

Best wishes to you all