Clear nail polish, shellac, poly coats for Cal. numbers. The only thing that can wear,is the rubber slide stopper/pusher. It won't draw without air bubbles appearing (one syringe exhibited this trait so far). Wash after every use,air dry and should last till the rubber hardens
through natural loss of soften chemicals. The majority of mine are still good after 20 to 40 rounds of mixing.
they are so cheap and last a long time
I agree. Way cheaper than a scale (free shipping to boot).
Scales are good for 90 mil plus batches. PITA with syringes.