GreshamH said:tuberider said:Well considering there are only two needle valves involved in the whole equation, and of course the CO2 valve doesn't apply, that can only leave the effluent...
There are medical dosers that are not only adjustable, they can be run 24/7, thus eliminating the need for a needle valve, which invariably clog. No valve, no clog
I use a Cole Palmer peristaltic for this purpose. Rated at continuous duty, heavy duty and nearly bullet proof. I tend to stay away from medical dosers, I've found them to be louder then the scientific ones I use They also have too many alarms :lol:
Ebay is your best bet. I remember when I was looking for one, ebay always ended up the cheapest. Dovbid always ended high.Gomer said:There are lots of science ebay like places you can check out. Dovbid is one that comes to mind.