Instead of telling SB's owner what size pink for the next meal, I just posted what I feed a group of similarly-sized hatchlings, and then the mice, with the weights I divide my pinks into. Seemed easier than saying, he's 18g, so I'd feed a medium pink, weighing 3.5 grams. This gives a whole spectrum.
I also QR code them, but lately since I've been feeding 55 hatchlings in one go, by the time I'm done, I say, oh I'll do it tomorrow, so now their computer records look like they haven't eaten since Thanksgiving...
It was easier for me, with this many hatchlings, to weigh all the pinks, then I don't have to do it as I go. I just pick out of the bags.
I like the ziplock vacuum bags.