We often need to dispense small amounts of liquid and this can be fiddly, messy and inaccurate.
I found these, which might be useful. They come with a stepped collar that fits into the neck of most bottles and you simply invert the bottle to withdraw the right amount.. I found that it didn't fit all bottles. They might even be left in place permanently, as a stopper, in such things as wetting agent and stop-bath concentrate.
https://www.ampulla.co.uk/Shop-For-Plastic/Plastic-Measuring-Scoops-&-Jugs/c-1-170-284/
I found these, which might be useful. They come with a stepped collar that fits into the neck of most bottles and you simply invert the bottle to withdraw the right amount.. I found that it didn't fit all bottles. They might even be left in place permanently, as a stopper, in such things as wetting agent and stop-bath concentrate.
https://www.ampulla.co.uk/Shop-For-Plastic/Plastic-Measuring-Scoops-&-Jugs/c-1-170-284/