MicrobeHunter.com Microscopy Forum

It is a rotifer, a bdelloid by the look of it. Under adverse conditions they form cysts - this protects them until circumstances improve. The lack of movement you mention was probably the beginning of this process. Some links: http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=15&t=46 Th...

I was looking for tardigrades so I put some pond water in a container with some lichen and moss. I didn't find any tardigrades but I saw a few of these. I'm guessing rotifer but I have no idea. It wasn't moving at all, this was a long exposure, maybe it was dead. This was shot on expired Panatomic-X...

I work in the hazardous waste cleanup industry, we used to test oil with what is called the Beilstein, or copper wire test. It's very similar to the test described in your link but it was commonly used to test for chlorinated compounds in oil like PCB's. If the oil was chlorinated it would emit a gr...

MichaelG. wrote:Bryan,

You may find this useful:
http://www.geocities.ws/dushang2000/Mic ... hments.pdf

MichaelG.

I will edit this post if I find more.

Thanks Michael, that’s actually quite useful.

so I can make contact prints When I was 15 I had b/w photography as a subject in school. I told my grandmother about it and about the enlarger that was used. She didn't want to hear about the enlarger, all that was needed was a box with a bulb, switch and milk glass on it. Okay - what I didn't know...

Hi Bryan, thank you for posting your analog photography! These old microscope cameras were expensive and nicely made instruments but I really can't remember when I last saw an image made by them. I myself started digital photography late, it was 2007 and I bought a Pentax DSLR when 6 megapixels did...

This is a test shot with my setup using film. This is the trailing edge of a mosquito wing at 450X magnification. Looks like feathers to me. The exposure was about 25 seconds. The film is expired Kodak Panatomic-X semi-stand developed in 1:100 R09 (Rodinal). I rated the film at an ISO of 25 since it...

It's a theodolite, for measuring angles in surveying. Nothing to do with microscopes. That's what I was thinking it is as well. It looks like it would be extremely heavy to use in the field, probably why they use more plastic in modern ones. I assume the viewfinder points down to get a measurement ...

It looks like it could blow your eyeballs out of the back of your head.

Incompatible hazardous materials. Chemical: oxidizers (chlorine laundry bleach, hydrogen peroxide, calcium hypochlorite) Don't Mix With: petroleum-based materials, fuels, solvents, corrosives, heat Because: fire hazard, toxic gas generation https://rmehs.fullerton.edu/_documents/policiesandguideline...

I don't think it's safe to mix an oxidizer with a flammable liquid, be careful with that. I can see where the dish soap would help prevent drying spots. Kodak makes a product called Photo-Flo 200 that I use to prevent spots when drying photographic film, a small amount works really well. Mix it with...

I have everything set up now with my trinocular head, now I need to start figuring out how to get some good photos with it. Special thanks to ebenbildmicroscopy for supplying the adapter for the trinocular head.

You may want to put a little chlorine in that pool.

There are several on eBay right now, it's called a MIKAS microscope adapter or just search for "Leitz microscope adapter". It's easy to adapt to any camera that has a removable lens, all you need is an adapter that goes from LTM or M39 thread mount to whatever mount you need for your camera. They al...

As a general rule, I wind mine up to the very top, where it's brightest, and then lower it until I get good contrast. There are specifically stated position settings, but the people writing these in articles I have read usually say, "open it a little past the standard setting" and "adjust the conde...

That's very interesting, what does it use for the hydraulics, water, oil, air?

Nice shot, did you also focus stack it? I’m just starting to learn about photomicrography so I would like to know ways to overcome the tiny depth of field.

What about repairing chips in the enamel? I was thinking of using automotive touch up paint, the kind they sell for filling in chips. It comes in a small jar, you just put a drop in a chip and it fills it in.

Beautiful scope, what a great find. If you you're patient you can find some great deals like this on that auction site. It's often someone that doesn't know what they are selling and didn't take the time to research it. Sometimes they will misspell the name, I have found some great deals that way, L...

Welcome Tom, I just joined this forum a few weeks ago after purchasing a 1957 Leitz SM microscope. I'm currently working on making it a trinocular microscope. I also have an appreciation for the build quality of these black enamel microscopes, that probably comes from my appreciation of the Leica ca...

Nice job, it almost looks 3D.

I've been using this setup to practice photographing things using a digital camera instead of the Nikon 35mm in the photos above. I'm still waiting for some supplies to arrive like a dye kit so hopefully I'll see some improvement with that. I'm a Geologist, not a Biologist so I may have misidentifie...

Hobbyst46 wrote:

Bryan wrote:My calipers read 1.614 inches at the widest point which converts to 42.453mm...

Actually, 1.614x25.4=40.996mm...

Ooops, must have made a typo when I put it into the Google converter. That's good, it should fit then.

MichaelG, I measured the male fitting that inserts into the microscope arm, it looks like it's about 43mm, does that compare to yours? Mmm ... This could get interesting/confusing My dovetail only measures 40.98mm diameter, but it has a surprisingly long cylindrical portion at that diameter. [ As i...

Thanks for the responses! Looking at some of the literature on these microscopes it does look like they use the same parts between the Laborlux and the SM models. MichaelG, I measured the male fitting that inserts into the microscope arm, it looks like it's about 43mm, does that compare to yours? Je...

I just received 1957 Leitz SM Medical binocular microscope kit. This is my first "real" microscope other than what I used in college and work years ago. I have an Edmunds Scientific Monocular 3 lens microscope which is basically a toy. I chose this one because it looks like a complete kit and I can ...

Interesting story Bryan, it's always good to hear where a person comes from and a bit of their life story. You are certainly dedicated to stick with the old film and am sure you'll find the right scope to marry your camera too. I loved film in my day, the Pentax ME-super was my tool and I spent man...

This 1970 B&L microscope catalog has it listed on page 10, they call it an accessory slot compensator. Anyone have a use for one of these?

http://earth2geologists.net/Microscopes ... atalog.pdf

It looks to be a "tilting compensator", used in polarization studies of birefringent materials. It has nothing to do with the other item (the micrometer eyepiece). Here is a manual (top row, middle) for the Leitz equivalent (go to the pdf page 16 of the manual for the English version): http://micro...

Pete, you could be right, it may insert into the optical path somewhere. I attached another photo to give a better view of the part that would be inserted. The total length of the tab is 2.5 inches but there is a stop or raised edge that looks like it would only be inserted 1.5 inches. The tab that ...