Super cheap injector flow test?

I bought a supercharger kit that came with larger injectors to run e85. Unfortunately the guy I bought the kit has no clue what size they are, and Deatschwerks doesn't mark the rate on them whatsoever. I can send them to Deatschwerks to flow test them for $13 per injector plus shipping, but I was hoping there's a cheap DIY recommendation instead. I think they are 700cc but won't know without some testing.  I'm going to pester the previous owner a bit more, but he's not the guy that bought or installed them as the kit was on the car when he bought it. So far it's been a dead end.

Edit: Just realized I only need to send ONE injector to be tested, but I'd still like to possibly do this myself if it doesn't require any fantsee equipment...

12v to get the injector full open, pump and a set fuel pressure and a stop watch and graduated cylinder or a way to accurately weigh it.

Injectors can easily be damaged having to much power applied for too long.

I'd send'em to Marren injection and get the cleaned and dyno'd and they come with new o-rings too.

I mean that's not expensive if you want it done properly

Another vote for getting them cleaned since they have a very unknown history. They'll get flow tested as part of the deal.

Yeah I think I'm going to send one to Deatschwerks. It's $26 round trip to get it tested, and it's an injector they manufacture. Better yet, they aren't too far from me so the turnaround should be pretty quick.

I found a spot on ebay that flows, cleans and does new orings/filters for 12 per. Just got a set back yesterday, I can find the invoice if you're interested.

You have to send them out!

If you don't, you will never know if you have a dud injector and can spend all sorts if time trying t find out what is wrong.

I have sent out a set of six and got before and after flow data - on a typical set, one had to be replaced as it couldn't be cleaned and half the rest improved drastically from being cleaned.  The safe thing to do is assume that they aren't suitable to use until they have been serviced.

I've decided to send them all in to get flow tested. If they appear to need any further work they will clean and service as needed. I don't think they need anything as they look fairly new, but the cost is still way less than new injectors and at least I'll know they are ready for the big show.