... I bet you have been watching a rotaria (a leech like rotifer), the next you should do is to try darkfield (it is easy to achive at low magnifications which...
2307
pam hart
bob44pam
May 1, 2002 9:56 am
Thanks robert.Are the polarizer kits any good and worth getting'Also it seems a mechanical stage would be worth adding.At high power or even low it's hard to...
2308
Bob Mertes
bobmer
May 1, 2002 10:09 am
... From: pam hart To: Microscope@yahoogroups.com Sent: Wednesday, May 01, 2002 5:56 AM Subject: Re: [Microscope] Re: MY NEW MICROSCOPE Hi Bob: You will get...
2309
Gordon Couger
Gordon@...
May 1, 2002 10:15 am
Absolute alcohol is hard to get and hard to keep. It is very difficult to buy and once you have it is absorbs water from the air every time the bottle is...
2310
Gordon Couger
Gordon@...
May 1, 2002 10:33 am
You can make a pretty good polarizing kit from the small set from Edmond scientific or a pair of polorid sun glasses for the analyzer in the tube and a...
2311
Larry D. Boyd
larboyd2000
May 1, 2002 1:50 pm
Hi Guys, The anhydrous copper sulfate works best and I believe that is what is used commercially. I have been writing a book (still unsold and my agent hasn't...
2312
Roberto Diaz
rdiazmartin@...
May 1, 2002 2:32 pm
Hi! Well today I have been trying out to get darkfield with my 40x objective using stops my 1.25 NA condenser and some lenses I had at home. My conclusion is...
2313
Wallace Kelley
wkelley353
May 1, 2002 2:58 pm
Hi Roberto, I have a variety of Spencer and AO darkfield condensers. Unfortunately they fit only the Spencer fork , except one which has it's own lamp and a...
2314
rvanwezel
May 1, 2002 5:31 pm
Other option: 100%isopropanol (isopropyl alcohol) will do for most protocols that require absolute alcohol. Cheap (no duties) and not very hygroscopic. You...
2315
johnmoran28
May 1, 2002 5:37 pm
... objective ... is all ... has to ... Hi Roberto, There are a couple of things to check before parting with your cash. The key to dark field is that the NA...
2316
tsuperbus
May 1, 2002 6:14 pm
Hi all, I have been trying to obtain a decent darkfield image with a immersed Wild darkfield condenser. So far, results are dissapointing. I suspect that the...
2317
Chas. 'Mark' ...
cbee1uiucedu
May 1, 2002 6:30 pm
... If I had to guess, I would guess that your bulb runs from 6 to 8 volts, at 5 amps, which would mean 30-40 watts give or take. But I sure wouldn't want to...
2318
Phil Peterson
fardley
May 1, 2002 9:04 pm
Raymond, Do a Google search on "6-8V5ATB-1" . Looks like 6V x 30W. Phil ... From: "tsuperbus" <collatinus@...> To: <Microscope@yahoogroups.com> Sent:...
2319
Frez
frfez
May 1, 2002 10:50 pm
I gave up battling with my 40x and darkfield. My three AO DF condensers have slightly differing spot sizes and are 1.15 > 1.25 NA. None of them when oiled to...
2320
Roberto Diaz
rdiazmartin@...
May 1, 2002 10:55 pm
... Yes but how large has to be the NA of a condenser to be able to make darkfield with stops with a 0.65 40x objective? I have tryed oiling my condenser which...
2321
Manuel del Cerro
m.delcerro@...
May 1, 2002 11:07 pm
... I learned you can't distill an alcohol water mixture to a strength of more than about 97%, so you can't prepare absolute alcohol by distillation. Much, so...
2322
Larry D. Boyd
larboyd2000
May 1, 2002 11:37 pm
Hi Manuel, et al The use of methanol is very attractive; you can buy some rough stuff in paint stores. In hematology one has to be certain to use an extremely...
2323
Manuel del Cerro
m.delcerro@...
May 2, 2002 12:09 am
on 02/05/01 19:27, Larry D. Boyd at labldb@... wrote: Hi Larry, et al "The use of methanol is very attractive; you can buy some rough stuff in ...
2324
bob44pam
May 2, 2002 12:27 am
My wife wants a binocular scope' she has a hard time with one eye.Are the accu- scope binos on mel sorbels site decent quality.I want a new one or one from a...
2325
johnmoran28
May 2, 2002 1:07 am
... Hi Roberto, My scope is a Balplan with a 1.25 NA condenser, the objective is 40x 0.65NA, so it is similar to your setup. One peculiarity: the condenser...
2326
wkelley@...
wkelley353
May 2, 2002 1:26 am
Hi Bob, Accu-Scope is up there with the best of the Chinese microscopes. I have purchased a number of things directly from Accu-Scope in Sea Cliff, NY and...
2327
johnmoran28
May 2, 2002 1:56 am
... Hi Again Roberto, I'm sorry, I answered one part of your question by telling you how my scope is set up but failed to describe how I determined the stop...
2328
julius3@...
darkfield2001it
May 2, 2002 8:00 am
Hi Raymond, the best illumination for darkfield in omogeneous immersion ( Both condenser and iris oil objective in oil ) is about 100W. I use a 150W fiber...
2329
David.Evans@...
lambkin12
May 2, 2002 8:42 am
Good Morning All. I've just come by a secondhand x15 micrometer eyepiece fitted with a 0-50 linear reticle. Last night I went about calibrating it. Not having...
2330
David.Evans@...
lambkin12
May 2, 2002 9:34 am
John, I found your posting to Roberto most helpful. Many thanks for sharing it. Fr David...
2331
David.Evans@...
lambkin12
May 2, 2002 9:34 am
In a message dated 02/05/2002 00:02:02 GMT Daylight Time, ... I've just tried John's method. Works fine with Abbe 1.25 brightfield, x 20 Apo and 15mm diameter...
2332
pam hart
bob44pam
May 2, 2002 12:21 pm
Thanks wallace for info.I am in no hurry since i just got my first microscope to play with.I wander what brand my microscope is from edmonds' the box said made...
2333
mksphoto
May 2, 2002 4:36 pm
I got a pretty big piece of polarizing material from a surplus store - more than I need - if someone out there is having trouble locating material let me...
2334
Roberto Diaz
rdiazmartin@...
May 2, 2002 4:46 pm
... Bob! just hold on a little bit before purchasing!! :) Take a look first at nightingale as a starting place and then try looking at ebay.. and then try...
2335
Roberto Diaz
rdiazmartin@...
May 2, 2002 4:46 pm
... Ok! now I have my homework for today.. I found it counter-intuitive only if you dont take into account that higher powers require the objective be much...
