Not to save cash, a good way to stop accidental cross contamination. I have four 300 ml measuring cups for RA4 processing, labeled Water, Dev, Stop, Blix, for 8x10 and 11x14 drums. Another set of 600ml ones for 16x20 drums. A set of 1 liter ones for B&W film and also a set for C41 film, all labelled for specific chemicals. Plus a few unlabelled ones for general usage. And at 1 $ each, not expensive insurance either. Esp for RA4 printing where the dye residue makes every chemical almost the same bluish colour after one trip thru the drum.
Same with storage bottles, 500ml water bottles are $4.00 for a case of 35, complete with water, drink the water, remove the paper labels and you now have 35 reusable and squeezable bottles so no air is trapped above the solutions.