I have a 5ml syringe from Walgreens from yeeeeears that draws exactly 5ml.... meaning it STOPS at 5ml by design... the internal plastic stops and blocks drawing past 5ml
I want more of these syringes bc its suuuuper convenient to just draw and go with pulling plunger back to get exactly 5ml for Hanna testing (two water draws for 10ml)
What's this type of syringe called?

I want more of these syringes bc its suuuuper convenient to just draw and go with pulling plunger back to get exactly 5ml for Hanna testing (two water draws for 10ml)
What's this type of syringe called?

