Plastic flasks, class A, 25 or 50 mL, NS 19/26

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Hello,

who knows a supplier of volumetric flasks in class A.

Volume: 25 or 50 mL

19/26 stopper (!), bigger tablets should be placed in the flask

Material: plastic

Thank you very much for your help.

Florian
Largest neck class A that I've seen for those sizes takes 13 stopper, and are glass.

Larger neck decreases accuracy.
Corning makes glass wide necked flasks w/ screw caps. They work well for larger tablets.
Thanks,
DR
Image
Do they even make Class A plastic volumetric ware? The only thing I have seen are Class B in plastic.
The past is there to guide us into the future, not to dwell in.
agree with CPG
don't think there are any volumetric flask with such a combination of volume and neck size (if not custom made).
I doubt that you will reach the necessary precision for a type A specification with that neck size for 25 or 50ml.

have a look at the Brand specification table (glas):
10/19 ±0.04 ml
12/21 ±0.06 ml
14/23 ±0.10 ml
19/26 ±0.25 ml -> which is about 0.5-1% error for your volumes; which is even larger than type B spec.

Why don't you dissolve/disperge your tablets in small volume in a beaker and the quant. transfer it to the vol-flask?
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