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Author: Subject: HPLC
Drunkguy
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[*] posted on 5-2-2008 at 15:42
HPLC


Has anybody here contemplated building their own HPLC machine?

Conventionally, it would be out of most of our price league, but with junk being sold at auction, I think its becoming more the case that it is starting to become worth thinking about.

I have a link to read: http://www.forumsci.co.il/HPLC/index.html

I'm still of the opinion that I dont want to throw away my money on rogue apparatus that I dont have a hope of using. In a few years from now, who knows how the world will have changed?




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Sauron
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[*] posted on 5-2-2008 at 16:55


As I have posted previously, I own a number of Waters HPLC systems that I have assembled from units purchased from a variety of sources, including LabX and various dealers. I have three analytical 600E systems and two preparative PrepLC4000 systems. All of them are controlled by PC using Millenium Chromatography Manager running under Windows 98SE and communicating via an IEEE-bus and GPIB (HPIB) cables.

I have six UV detectors (two 486 tunable models using D2 lamps and four four channel programmable 490E models using xenon strobe lamps. The latter are capable of some of the functionality of a PDA like model 996. Two fraction collectors and an autosampler. Several Radial Compression Modules for cartridge type prep columns from 5mm to 47mm diameter and up to 300mm long in 100mm segments.

The redundancy in the above is intentional, so that spare parts can be cannibalized as needed.

In the course of acquiring all this and having it shipped to Thailand from USA, changing the fuses over for 220V, etc. I encountered a couple of serious crooks on LabX. eBay is worse. One fellow sold me an autosampler with the innards basically all ripped out, needless to say without so describing. Charming fellow, may he rot in Hell. Other dealers quoted for machines they did not actually have in stock (and lied about it) but their reputations preceded them.

Parts and consumables and columns are godawfully expensive, so HPLC equipment even when relatively inexpensive to get into is ALWAYS dear to repair and dear to maintain. Given the cost of HPLC grade solvents, it isn't cheap to operate either, particularly the preparative systems.

These are all quaternary systems I am talking about, capable of blending, metering and pumping up to four solvents at a time.

I have a number of isocratic systems as well, Waters 501 and 510. The pumps are similar and I got these so I could teach myself maintenance of the pumps without putting the more valuable machines at risk.




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Drunkguy
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[*] posted on 6-2-2008 at 11:49


I decided to get a Flashmaster II.

http://www.usedlabequip.com/details.aspx?itemID=3489

I had a flashmaster personal already but couldnt use it yet because I couldnt afford the cartridges.

I got a pharmacia fraction collector too since I couldnt find the Gilson one in the above link:

http://www.gmi-inc.com/BioTechLab/pharmacia%20fraction%20col...

Although it's not HPLC, im still satisfied that it is a step in the right direction and will hopefully open doors inthe colloquial sense.

[Edited on 6-2-2008 by Drunkguy]




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