Search found 291 matches

by wstenberg
Thu Dec 13, 2018 2:29 pm
Forum: Beginner's corner
Topic: I’m a amateur and trying to look for food poisoning germs.
Replies: 4
Views: 4179

Re: I’m a amateur and trying to look for food poisoning germs.

For E. coli , methylene blue isn't very useful. You will need a Gram staining kit. This consists of a series of two dyes. Gram stain kits should be easily available. The Gram stain will allow you to stain the bacterial cell wall differentially depending on the species of the bacterium. Some cells ta...
by wstenberg
Wed Dec 12, 2018 12:52 am
Forum: Microscopes and optics
Topic: Head compatibility/availability for Leica BM E
Replies: 11
Views: 5158

Re: Head compatibility/availability for Leica BM E

Are you looking for a binocular for the Leica? I might have one...
by wstenberg
Tue Dec 11, 2018 1:36 am
Forum: Introduce yourself
Topic: New Member From Pennsylvania
Replies: 4
Views: 4386

Re: New Member From Pennsylvania

Gary,
Congratulations on the retirement. Best wishes on the world microscope collection. So far, I just have Germany and Japan!
by wstenberg
Sun Dec 09, 2018 10:19 pm
Forum: Beginner's corner
Topic: Zeiss Universal
Replies: 3
Views: 2523

Re: Zeiss Universal

Thanks.

I can't really see the dovetails in that picture. I wish they would show a picture with it taken apart...
by wstenberg
Sun Dec 09, 2018 6:36 pm
Forum: Beginner's corner
Topic: Zeiss Universal
Replies: 3
Views: 2523

Zeiss Universal

Ok, Another unsolvable problem on the Universal. I have two epi-illumination objective holders. One fits perfectly in a functional orientation, I.e., the illuminator port faces the rear (where the light enters). The second fits with the reflector port facing the rear. No way for the light to get in!...
by wstenberg
Thu Nov 29, 2018 3:00 am
Forum: Pictures and Videos
Topic: Scone Surprise - YUK
Replies: 13
Views: 5294

Re: Scone Surprise - YUK

Doesn't all bread have yeast all over it? I've never had a scone; not sure exactly what it is, but it sounds rather bread-like...
by wstenberg
Tue Nov 27, 2018 2:07 pm
Forum: Beginner's corner
Topic: Conoscopic
Replies: 5
Views: 3706

Re: Conoscopic

Thanks all for the help and suggestions. I tried it on a GFL stand as suggested (and as shown in the photos) and it seems to fit fine. It probably was designed for the GFL stand. I have heard of people inserting a machined part into the Standard WL or Universal stand to make it work. It needs about ...
by wstenberg
Mon Nov 26, 2018 12:48 pm
Forum: Microscopes and optics
Topic: Setting up AO20: help reqd with Koehler
Replies: 11
Views: 5298

Re: Setting up AO20: help reqd with Koehler

I was just struggling with a very similar situation yesterday on my Zeiss Standard. I purchased a POL condenser on Ebay. After putting it on, I could not focus on the leaves when adjusting for Koehler. I tried another condenser, and it still wouldn't work. Tried everything I could think of. Finally ...
by wstenberg
Mon Nov 26, 2018 2:36 am
Forum: Illumination Techniques
Topic: Rheinberg lighting
Replies: 2
Views: 4235

Re: Rheinberg lighting

Great article with useful links.
Might have to give this a try.

Thanks!
by wstenberg
Sun Nov 25, 2018 1:25 am
Forum: Introduce yourself
Topic: New Member from FL
Replies: 6
Views: 5246

Re: New Member from FL

Don.
Welcome to the forum and to microscopy.
There's life in there, no doubt, and I am sure you find it.
Send pictures of your set up and what you are seeing, and the folks of the forum should be able to give you plenty of help.
by wstenberg
Sun Nov 25, 2018 1:22 am
Forum: For forum members who want to buy and sell equipment
Topic: for sale camera adapter
Replies: 3
Views: 4067

for sale camera adapter

For sale or trade. I just discovered this in a box of old things from many decades ago. The first is an Olympus camera adapter with its relay lens. My wife bought this for me new when I was in graduate school in 1985. It seemed like it was a lot of money back then, but we were really poor. I had an ...
by wstenberg
Fri Nov 23, 2018 2:46 pm
Forum: Pictures and Videos
Topic: Miscellaneous Photomicrographs
Replies: 13
Views: 6722

Re: Miscellaneous Photomicrographs

Well Done!
by wstenberg
Fri Nov 16, 2018 3:08 pm
Forum: My microscope
Topic: My microscopes
Replies: 3
Views: 3881

Re: My microscopes

Welcome to the Forum, At least some the Euromex line is the same as MeijiTechno. I know this is true for the stereomicroscopes; I don't know about the compound microscopes. I just received a thick Euromex catalogue at work, and I'm looking forward to perusing the pages. I've been using a MeijiTechno...
by wstenberg
Tue Nov 13, 2018 1:16 am
Forum: For forum members who want to buy and sell equipment
Topic: For Sale: Zeiss Junior
Replies: 4
Views: 3366

Re: For Sale: Zeiss Junior

I purchased the oculars on Ebay. They are listed as "Pair of WF10X 18mm Widefield Eyepiece for Biological Microscopes 23.2mm" from a seller named "outdoor2015" in China. I have made several purchases from this seller in the past. These oculars are a very economical replacement for the Zeiss microsco...
by wstenberg
Tue Nov 13, 2018 12:48 am
Forum: Introduce yourself
Topic: Hello from China
Replies: 8
Views: 5029

Re: Hello from China

Welcome to the Forum!
by wstenberg
Mon Nov 12, 2018 2:22 am
Forum: For forum members who want to buy and sell equipment
Topic: For Sale: Zeiss Junior
Replies: 4
Views: 3366

For Sale: Zeiss Junior

Selling my Zeiss junior microscope. I nice little entry-level microscope. The stand and stage are in good shape. I have place a new set of Chinese objectives as well as a new set of Chinese oculars. I have raised the stage by about 11 mm to accommodate the objectives, but it is easily changed back t...
by wstenberg
Sat Nov 10, 2018 2:33 am
Forum: Introduce yourself
Topic: Hello from South Bend, IN
Replies: 3
Views: 3103

Re: Hello from South Bend, IN

Jonathan, Welcome to the forum! I'm not sure what you are interested in looking at. At present, I am needing to decrease my number of microscopes, and I may have some very affordable options. I am attaching a photo of a little Zeiss compound microscope. It's in good shape. I have put a set of brand-...
by wstenberg
Tue Nov 06, 2018 12:46 am
Forum: Introduce yourself
Topic: Hello from Gainsborough, England
Replies: 6
Views: 5245

Re: Hello from Gainsborough, England

Welcome to the Forum!
by wstenberg
Sun Nov 04, 2018 8:22 pm
Forum: Beginner's corner
Topic: Conoscopic
Replies: 5
Views: 3706

Conoscopic

I am trying to attach a Fedorov stage on a Zeiss WL stand. Seem like it should be easy. Everything fits mechanically, but not all at the same time. I'm about an inch short of everything fitting, by the time I add the objective and condenser. Question: Is there supposed to be a spacer between the bas...
by wstenberg
Fri Oct 26, 2018 2:06 pm
Forum: My microscope
Topic: Leitz SM microscope and Reichert Inverted microscope
Replies: 7
Views: 6109

Re: Leitz SM microscope and Reichert Inverted microscope

Nice!
Is that LED on the inverted microscope?
by wstenberg
Fri Oct 26, 2018 12:19 am
Forum: Introduce yourself
Topic: Hello from Toronto
Replies: 4
Views: 4202

Re: Hello from Toronto

Hello Aslan,
Welcome to the Forum. We look forward to seeing your posts.
You will find many knowledgable people here.
by wstenberg
Thu Oct 11, 2018 1:11 pm
Forum: Camera systems and imaging
Topic: Zeiss Standard WL digital camera?
Replies: 18
Views: 21985

Re: Zeiss Standard WL digital camera?

OK, I removed the iris mechanism from the large Zeiss adapter as suggested by Charles. Now I have a big hole where the M35 camera was attached. I'll need some sort of big adapter ring to fit in it. Is this something you buy? or something you make? Also there were some other little bits in the light ...
by wstenberg
Thu Oct 11, 2018 2:41 am
Forum: Beginner's corner
Topic: Bertrand Lens
Replies: 1
Views: 2332

Bertrand Lens

IMG_0449.JPG IMG_0450.JPG IMG_0451.JPG I just bought this Bertrand lens on Ebay from Russia. It was listed as Zeiss. Does anyone know anything about it? I'm wondering if it's really a LOMO, since the dovetails don't seem to match the Zeiss Standard. They seem a little small. I think there is suppos...
by wstenberg
Wed Oct 10, 2018 4:17 pm
Forum: Microscopes and optics
Topic: Can someone recommend please a microscope that can view deep inside skin ,at least 2 c"m deep please.
Replies: 12
Views: 6587

Re: Can someone recommend please a microscope that can view deep inside skin ,at least 2 c"m deep please.

Ok here is another link for the article on looking into the skin with a regular microscope. Interesting article...

https://doi.org/10.1152/ajplegacy.1912.29.3.335

If this doesn't work, let me know and I can attach a PDF.
by wstenberg
Tue Oct 09, 2018 9:01 pm
Forum: Beginner's corner
Topic: Leica Galen III
Replies: 18
Views: 10249

Re: Leica Galen III

23 mm sounds like the standard size oculars. There are different kinds, but I would just see what you can find and try it out. I've recently purchased a set of the cheap Chinese 10x oculars on EBay. They are OK; good enough to get started. Like was previously mentioned, you'll need a phase contrast ...
by wstenberg
Mon Oct 08, 2018 1:16 pm
Forum: My microscope
Topic: Zeiss Universal
Replies: 4
Views: 4249

Re: Zeiss Universal

Zeiss made different drawing tubes for each model of microscope. I originally purchased this one thinking it was for the Standard. Mechanically, it fits fine on the Standard, but the optics are sideways. It took me a month to figure out it was actually for the Universal (it also fits the Invertoskop...
by wstenberg
Mon Oct 08, 2018 2:40 am
Forum: My microscope
Topic: Zeiss Universal
Replies: 4
Views: 4249

Zeiss Universal

IMG_0447.JPG IMG_0446.JPG My Zeiss Universal Project. Newly added is the microscope stand. It's a heavy-duty stand from a Marco Slit Lamp optometrist's microscope (The slit lamp is boxed up for a future project). The table top moves up or down with a wheel under the table. Currently set up for brig...
by wstenberg
Sun Oct 07, 2018 4:17 pm
Forum: Microscopes and optics
Topic: Can someone recommend please a microscope that can view deep inside skin ,at least 2 c"m deep please.
Replies: 12
Views: 6587

Re: Can someone recommend please a microscope that can view deep inside skin ,at least 2 c"m deep please.

Citation: THE BLOOD PRESSURE IN THE ARTERIOLES, CAPILLARIES, AND SMALL VEINS OF THE HUMAN SKIN. By Warren Plimpton Lombard, page 335 NO. III, JANUARY I, I9I2. THE AMERICAN JOURNAL OF PHYSIOLOGY VOLUME XX I X. Interesting, Might give it a try. I have the Zeiss A1 and A2 objectives around here somewhe...
by wstenberg
Sun Oct 07, 2018 4:09 pm
Forum: Microscopes and optics
Topic: Can someone recommend please a microscope that can view deep inside skin ,at least 2 c"m deep please.
Replies: 12
Views: 6587

Re: Can someone recommend please a microscope that can view deep inside skin ,at least 2 c"m deep please.

Some tips on direct observation through human skin with a standard microscope. From the American Journal of Physiology (1912). The entire article is available online and gives a lot more details on viewing blood vessels in intact skin, for the purposing of diagnosing various diseases. Interesting. "...