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Author: Subject: Who needs a centrifuge ?
MadHatter
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[*] posted on 18-8-2004 at 13:10
Funding


Actually, I work 2 jobs. The full-time job takes care of my needs.
The part-time job takes care of my wants and hobbies. It's taken me
a few years to assemble my lab but IMHO, condensers are
probably the most creative labglass I've ever laid eyes on. This is why
I collect them. Current types in my collection are Alihn, Buchler,
Cold Finger, Friedrich, Graham, Liebig. The retorts I look for are antique.
I haven't had much success there.

[Edited on 18-8-2004 by MadHatter]




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[*] posted on 18-8-2004 at 18:05
glass retorts


MadHatter,

There are 2 glass retorts up for sale on Ebay now under item 3832981725. Most likely you have already noticed.

Glassware has always fascinated me too -some of it gives me a woody.:D




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MadHatter
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[*] posted on 18-8-2004 at 18:42
Retorts


Thanks, Magpie, I'll take a look !



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[*] posted on 20-8-2004 at 09:36


The 250 ml boiling flask arrived in one piece. (With the stopper)

Thanks! :)




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MadHatter
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[*] posted on 20-8-2004 at 10:56
250 ml Florence Flask


You're Welcome ! Glad it in arrived intact !

[Edited on 20-8-2004 by MadHatter]




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MadHatter
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[*] posted on 21-8-2004 at 20:22
Lot


Currently, I'm bidding on a small "lot" of labglass that contains 2
condensers I'm looking for. If the eBay snipers don't blow my
brains out, I'll post back with the excess for the forum members.
Wish me luck !

P.S. Magpie, can't argue with you on your last post - Mr. Johnson stands
up and salutes even upon reading about exciting glassware ! I had to
pony up $400 for my last centrifuge only to get the rotor. All I wanted
was the fucking rotor ! But, no problem - 1 centrifuge will back up the
other ! I'll never be lonely ! :D If that makes me a pervert - SO BE IT !

[Edited on 22-8-2004 by MadHatter]




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[*] posted on 22-8-2004 at 19:07


I'm going to rearrange my lab, so far I ditched my interest of energetic materials, and more complicated synthesis, so some pieces of glassware I just don't need anymore. I do have a 300mm graham condender, with 24/40 joints, in good condition, the only exception is a slight stain of potassium permanganate on the joints, I don't know how to remove. Interest?

I guess I'll decide on my books, I have 16 chem textbooks, I don't need all of them,but I'll keep a few.

Now I just need to keep enough glassware to carry out basic reaction, and extracting plant alkaloids.




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[*] posted on 23-8-2004 at 11:45


Wash the joints with HCl, that'll take care of the KMnO4 stains.



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MadHatter
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[*] posted on 24-8-2004 at 08:14
eBay snipers


Sniper got me between the eyes this time around ! I couldn't get back
for the last 2 minutes because my work schedule had me on the road
at the time the auction closed. I won't give up ! I'll just look for another
lot of glass.

Question for any experienced eBay buyer: Have you ever been
solicited by a seller ? Case in point: I just lost a bidding war for
a 15kV 60 milliAmp neon sign transformer. To my surprise the seller
e-mailed me offering other transformers even offering to set a
"Buy It Now" price. Is this legal ?




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[*] posted on 24-8-2004 at 11:09


Who cares as long as you get what you want?

On a side note, I got the flask this morning. Very nice, let me know if you'll be needing anything!

[Edited on 24-8-2004 by Eliteforum]




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MadHatter
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[*] posted on 24-8-2004 at 13:14
Flask


Eliteforum, glad you got it ! I'll assume it's intact. Sorry I didn't have
a better fitting stopper for it. The #9 was too small so I had to go with
the #10. Anyway, I'm still on the lookout for more unusual condensers
for my ever-expanding collection. BTW, my new centrifuge ROCKS !
That fucker pulled the sub-micron Al out of suspension in less than
5 minutes ! Can't say I'm sorry I bought it ! So now I have 2 high-speed
centrifuges with swinging bucket rotors for my sub-micron Al work.
Can't wait to test it out in flash and rocket comps !




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[*] posted on 25-8-2004 at 08:12
Sniping


Why don't you use a sniping tool? I used one to get my hotplate so I don't see why you can't. You sign up with a site and enter your ebay ID, the max price you want to pay and the item #. It will enter a dollar over the next highest bidder about 5 seconds before the bidding ends. However there are other snipers so your max price determines whether you win or lose sometimes.



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[*] posted on 25-8-2004 at 08:24
side deals


I have to admit that I have not read all of eBay's fine print. But I have made side deals with sellers to our mutual benefit. I don't see how private transactions separate from the original eBay listing could be illegal, or even immoral.



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[*] posted on 25-8-2004 at 10:03


Ebay strongly discourages making deals on the side (because they don't get their cut) But your not in danger unless you ask a seller to make a side deal and he reports you to ebay. I think they just delete your account if you are caught.

Edit: I found this on eBay
"eBay rules prohibit use of this Contact eBay Member feature to offer to buy or sell directly without bidding on and winning the item on eBay. We strongly advise recipients of these email offers to report them to eBay. Participants in these 'off eBay' transactions lose their ability to use eBay Feedback and our buyer protection programs. Learn more about trading safely."

[Edited on 25-8-2004 by rift valley]
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[*] posted on 25-8-2004 at 13:06


That is probably a measure against spammers trying to sell things en masse, rather than private deals between individual consenting parties.

John W.
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[*] posted on 25-8-2004 at 13:14
Sniping tools


Are worthless IMHO.

I snipe manually and it's very easy.

Requirements:

- Watch or stopwatch with countdown function.
- two open browser tabs
- price limit.

Open the main page for the auction about 15 minutes before it ends. Take the stopwatch and set it to countdown from 1 minute. Click bid but make sure it opens in a different window. Make sure you're logged in, enter your max price so that you only have to make one click to submit.

Keep refreshing the main page for the auction as fast as possible after the 2 minute mark. Start your timer at 1 minute and submit your bid preferably at 10s, somewhat earlier if you have a slower connection.

Works everytime for me.




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MadHatter
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[*] posted on 18-9-2004 at 12:03
Still looking !


I'm still looking for large lots of glass with condensers. Haven't found
anything yet. I'll post back when I do. Vulture, I haven't even found a
rotavap condenser lately ! It's possible the sellers are getting wise to the
value.




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[*] posted on 20-9-2004 at 09:22


Sorry, I just have a couple of things to say about sniping tools...I love them!

I use SnipeRight which I think is one of the best ones out there right now. I registered the product for about $15 American, not too shabby I think.

What I like about this program is that they have their own server that deals with the sniping. So I don't even have to be on the computer when the bid ends. This is especially useful since I'm often in school when the bids do end, and unless I want to run out of class to snipe an auction on these SHIT computers...I think you get the point.

You can also choose the times that you want to snipe at, usually about 8 seconds does the trick although you can go as low as 2 seconds but that's pushing it. The server is very fast and I don't have to worry about my computer locking up on me which has been a problem for me many a time. You simply choose your max bid, and the time you want it sniped at and it's done! Go to bed, play with yourself, whatever! They'll do it all themselves.

I've never lost a bid because of this.

You can even simulate "real" bidding patterns so that it doesn't look like you've sniped it.

All in all, I think the program pays for itself (a comment someone else had said which I completely agree with).

If you're going to snipe - SnipeRight!

hahaha. I'm not affiliated with them in any way, but it really is a great program!




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[*] posted on 20-9-2004 at 13:47


http://www.ledscreen.co.uk/glass

Selling his stuff on both sites:

http://cgi6.ebay.co.uk/ws/eBayISAPI.dll?ViewSellersOtherItem...




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[*] posted on 18-10-2004 at 11:54


MadHatter, I've received the centrifuge! The customs seem to not even have opened the crate, there was only one layer of duct tape on the box.

It's very beatiful and has a place of honor on one of my tables. I haven't tested it yet, I need to go and buy a 220-->110 volt transformer capable of at least 150W first; which I cannot really spare the cash for until the 27th. Then I'll finally be able to make ultra-pure PbO<SUB>2</SUB>!

I don't know how I will ever repay your kindness. If I ever find a way of making good PbO<SUB>2</SUB> anodes, I'll send you the first 3 I make.

Thank you!




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[*] posted on 23-10-2004 at 12:34
Condensers


I just purchased 2 more condensers for my collection on eBay. I wish they had been in
lots so I could ship the rest out. One is a double-jacketed Liebig and the other is a reflux
condenser that looks like an inverted Graham. The water flows through the coil instead of
the gasses needing to be condensed. I'll post pictures when I receive them. I've been
working a hell of a lot of overtime lately, so it was time to shop ! May as well enjoy it !




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[*] posted on 23-10-2004 at 12:56


Quote:

The water flows through the coil instead of the gasses


This is referred to as a Dimroth condensor in europe.

It has the advantage that it can be used in angled horizontal position, contrary to a graham. Cooling effectiveness is lower as gasses can creep up along the wall, which is at room temperature.

[Edited on 23-10-2004 by vulture]




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[*] posted on 24-10-2004 at 16:38
Condenser


Vulture, thank you for the info on this ! I'll post the pictures of both condensers when they
come in.

I actually saw one of those Dimroth condensers in the shop next to mine, but the new guy turned
it back over to the State Of Maryland, required by law, instead of giving it to me. I would have
loved receiving this, at no charge, to my collection. What a waste ! What is the State Of
Maryland going to use it for ? It was in a machine shop !




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[*] posted on 28-10-2004 at 15:42
New condensers


New condensers for my collection - Dimroth on top(identified by Vulture - Thanks Again !) and
the double-walled(high efficiency) Liebig on the bottom.

NEWCOND.jpg - 151kB




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[*] posted on 19-11-2004 at 17:01
Vacuum


I'm waiting for another condenser to come in. It's part of a vacuum distillation setup. It looks
like a high efficiency Allihn condenser. I'll post pictures when it arrives.




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