# What primary standard acid can be used to standardise NaOH solutions by titration?

I've done an experiment to standardise $\ce{NaOH}$ using oxalic acid.

What other primary standard acid can be used to standardise $\ce{NaOH}$?

Can $\ce{HCl, H2SO4, HNO3}$ be used?

I read up and found that:

$\ce{HCl}$ and $\ce{H2SO4}$ are easily diluted, however, the concentration of the "concentrated" solution is not accurately known.

$\ce{HNO3}$ contains a little nitrous acid, $\ce{HNO2}$, which has a destructive action on many acid-base indicators.

Therefore I only found potassium hydrogen phthalate. Is there other primary standard acid that can standardise $\ce{NaOH}$?