Acetic acid has a higher capacity than citric acid (at same percentage). In return it smells and sometimes stitches in your nose.
If diluted to 2% or 3% the effect is reduced. Stopbath based on citric acid like ADOSTOP is oudourless and comoftable to use with it´s built in indicator but if you just need someone do to the job acetic acid will do it for half the price at almost double the capacity.
ADOX is offering you acidic acid with a 60% strength in a large variety of confectioning sizes so you can order according to your needs: