The Waters 515 pump is an iscocratic pump. It can achieve flow rates up to 10ml/min with it's standard flow heads and pressure up to 6000 PSI. The pressure ripple specification is also listed at 1% or 30ul per/min, whichever is greater.

This pump creates a bit of a strange situation on the used market. They are actually a bit expensive used, fetching consistently high prices in auctions and from used vendors. However if you do not absolutely require the low range of it's flow rate or the it's ripple specification you might still want to consider one of Waters older pumps. The 510, 590, M45 and the 6000 pumps are absolutely ancient now. They are very ugly, you do not want a client to see one in your lab but they are also "a dime a dozen". They can achieve similar while slightly inferior results to the 515 and at about 1/10th of the price when sold in an auction.

They are so cheap in fact that we cannot keep the lights on selling them and do not offer them. The parts to rebuild them cost 2X to 3X the price you would pay in an auction for another pump. If you are comfortable rebuilding pumps, then they may be an option but for many people they could also be a liability as they are so old and without rebuilding they will likely fail after very limited use.

All of the pumps listed above can be controlled with a Waters pump control module. This adds software control to a modern pump like the 515 or even to an ancient one.

While these 515 pumps are quite compact they do not stack with most of the other modules offered by Waters. Some planning may be required if your bench space is limited.

At one point all of our prices were posted online. Since the subprime fiasco of 2007 we have had an increasingly difficult time keeping our online prices up to date with the number of currencies that we normally quote in. Worse yet (for us) the prices of many instruments are in a state of flux. At this time(June 2010) we are in a buyer's market, this is an excellent time to buy used instrumentation, with prices approximately 10-15% lower then in 2007. Unfortunately we have had to switch from an online pricing setup to a quote-on-request one.

If you would like a quote on one of our HPLC pumps please let us know if you would like our standard two year warranty or our optional 90 day warranty. Please note that only the parts needed to return functionality to the pump are replaced with the 90 day warranty, while parts are proactively replaced with are standard two year warranty.

If you have any questions at all please don't hesitate to contact us. Our sales people will never "follow up" with you afterwards and if you contact us by email we will never add you to our spam list. We do not and will not, ever have one.

If you could please send an email to info@2h2inc.com we should be able to provide a quote to you within a few hours or please visit our contact page for our telephone number and mailing address

In addition you might want to visit our page for more HPLC related items.