Dosing/Metering Pumps

[Bryan]

Hi Randy:

I assume you work in a multi million dollar laboratory. Any recommendations on mfg that make QUIET peristaltic/metering pumps.

Was looking around on Ebay and Cole Palmer Masterflex and Fluid Metering Inc pumps pop up quite often.

Looking something to feed a calcium reactor.

Thanks

 

[jag1979]

do not buy an aqua medic

 

[Randy Holmes-Farley]

The Cole Parmer Masterflex units are very good, if pricey when new. When we've used such pumps, that what we used.

 

[danOO00]

I use a cole-palmer masterflex that I found on Ebay... "gently" used for around $85 with the head. It is not very quiet, but you can use it remotely (mine is about 50-75' away in the laundry room. It pumps kalk up to the sump on a float switch/relay to replenish evap. It is definitely one of the most reliable peristaltic pumpsas far as I have heard.

 

[Bryan]

Thanks all. I also see on EBAY often is LMI industrial metering pumps. Used exclusively in industrial settings and very robust and expensive when new. But I suspect they are probably noisy.

I want to feed a calcium reactor so mounting remotely really isn't a viable option.

 

[klasiksb]

I don't know about the LMI, but the LMIII I have is very quiet. But don't think there good for a calcium reactor where you have a constant feed of water.

 

[Bryan]

Not referring to the LitreMeter pumps by Spectrapure, but the LMI/Milton Roy pumps.

http://www.lmipumps.com/corp/details/0,10294,CLI1_DIV12_ETI3738,00.html

 

[mattboy]

The Nautilus by innovative aquatics is much quieter than the litermeter III; I have both. I think it would work great as a calcium reactor feed, assuming you cannot just tee off your return line, install a John guest miniature ball valve, and use a "pinch" valve like they have on medical drippers on the output. The combination of the pressure line, ball valve on the way in, and the pinch valve really works.

 

[Bryan]

Don't see how the Nautilus or any of the medical dosing pumps could be used as a feed for a calcium reactor. They top out at 300ml/h which translates to 5ml per min. The average effluent rate for a calcium reactor is somewhere between 30-100 ml/min

 

[atvdave]

<a href=showthread.php?s=&postid=9077769#post9077769 target=_blank>Originally posted</a> by jag1979
do not buy an aqua medic

I have the twin reefdoser and like it very much.

It's so quiet I have to look and make sure it's running at the time's I have it set for.

No complaints here.

 

[mattboy]

I'm pretty sure the nautilus can dose 900 ml/hr with the higher flow tubing, although thinking about it maybe that's not enough for a calcium reactor; good call Bryan.

 

[Bryan]

Even at 900 ml/hr that only works out to 15ml/min. Still too low...