I need to look up what a strew slide is. I saw some diatom arrangement slides on the web and they might be an option. Depends on how many slides we deem necessary, those things seem to be expensive.
The sand grain tip sounds great!
Search found 341 matches
- Sat Apr 13, 2024 7:00 am
- Forum: Illumination Techniques
- Topic: Prepared slide set for demonstrating contrast techniques?
- Replies: 4
- Views: 264
- Fri Apr 12, 2024 4:14 pm
- Forum: Illumination Techniques
- Topic: Prepared slide set for demonstrating contrast techniques?
- Replies: 4
- Views: 264
Prepared slide set for demonstrating contrast techniques?
At my unit we are planning a optical microscopy course. One of the main topics in it would be different contrast techniques, their pros and cons and usage. This is relatively straightforward with stereo microscopes as one can easily use fresh pond/stream/other samples and demonstrate reflected, brig...
- Fri Apr 12, 2024 1:07 pm
- Forum: Microscopes and optics
- Topic: Reichert Polyvar
- Replies: 122
- Views: 1836599
Re: Reichert Polyvar
The Reichert Polyvar saga continues :) We found a scope in excellent condition for our university unit. It does not have the universal condenser but we can find that one later. The condenser it does have I am unfamiliar with but will get details later. The objectives were marked as polarization comp...
- Thu Apr 11, 2024 12:24 pm
- Forum: Microscopes and optics
- Topic: Reichert Polyvar
- Replies: 122
- Views: 1836599
Re: Reichert Polyvar
I am wondering about this polarization optic for the Polyvar, please see image below. It goes on the output of transmitted light at the foot of the microscope. I am thinking that it could be used for simple polarization with the universal condenser but I am not sure what else would be needed. Maybe ...
- Tue Apr 09, 2024 4:15 pm
- Forum: Microscopes and optics
- Topic: Olympus IMT-2 mystery
- Replies: 17
- Views: 1204
Re: Olympus IMT-2 mystery
I am glad you found a solution! These old scopes sometimes require us to come up with some tricks. We are getting two additional IMT-2 units in the next few weeks. They are refurbished and come with phase equipment. It's finally time to replace those Soviet Union inverted scopes that have been in a ...
- Tue Apr 02, 2024 3:03 pm
- Forum: Microscopes and optics
- Topic: Wild M8 vs Wild MZ3
- Replies: 19
- Views: 1472
Re: Wild M8 vs Wild MZ3
Here it is! https://imgur.com/a/v749xGr https://imgur.com/a/v749xGr I'm really about the darkfield base, adds an extra dimension to the experience. Very useful to check for dust as well in your prep. Now I'm wondering about the trinocular tube, how do I adapt a M43 camera to it? The camera port is ...
- Sat Mar 30, 2024 8:55 am
- Forum: Microscopes and optics
- Topic: Olympus IMT-2 mystery
- Replies: 17
- Views: 1204
Re: Olympus IMT-2 mystery
You have a nice scope in your hands there! I like the IMT-2 a lot. We have one in our unit and we use it mainly for teaching, plankton for the most part. It was originally equipped with phase and epi-fluorescence, although we never used the fluorescence system. Now I have equipped if for DIC and wil...
- Tue Mar 26, 2024 4:57 pm
- Forum: Microscopes and optics
- Topic: Wild M8 vs Wild MZ3
- Replies: 19
- Views: 1472
Re: Wild M8 vs Wild MZ3
I think you might be able to find a Pl Apo for the Wild probably for around 300-400 euros, depending on condition. At least if you have time to wait on deals. If in a hurry, might cost double that. If I recall correctly, the WD for a 1x Pl Apo is around 40-50mm.
- Tue Mar 26, 2024 4:53 pm
- Forum: Microscopes and optics
- Topic: Carl Zeiss Jena, Jenaval
- Replies: 3
- Views: 505
Re: Carl Zeiss Jena, Jenaval
Thanks. That will be of help, yes, even though it doesn't have any of the photos, diagrams etc. Maybe a machine translation from a German original?stjepo wrote: ↑Tue Mar 26, 2024 10:43 amWill this help you?
https://www.manualslib.com/download/208 ... naval.html
Regards
- Sun Mar 24, 2024 6:07 pm
- Forum: Beginner's corner
- Topic: Centering & adjusting the Leitz 100Z lamp?
- Replies: 12
- Views: 939
Re: Centering & adjusting the Leitz 100Z lamp?
Based on what I read of Leitz 600 and 400 series condensers, their intercept distance with the flip-up top is around 1.2mm, please see below. Doesn't this mean that my problems are likely caused by the condenser not reaching a high enough position, close enough to the slide? Please see the photo I ...
- Sun Mar 24, 2024 10:14 am
- Forum: Beginner's corner
- Topic: Centering & adjusting the Leitz 100Z lamp?
- Replies: 12
- Views: 939
Re: Centering & adjusting the Leitz 100Z lamp?
On a proper setup, the condenser top lens should be able to nearly touch the slide bottom - within less than a millimeter. At least, to allow oiling the condenser to the slide for oil immersion imaging. However, the geometry of the stage and condenser carrier could allow the top lens to emerge too ...
- Sun Mar 24, 2024 9:25 am
- Forum: Beginner's corner
- Topic: Centering & adjusting the Leitz 100Z lamp?
- Replies: 12
- Views: 939
Re: Centering & adjusting the Leitz 100Z lamp?
It's a bitza. Turns out that the stage is not incompatible with the condenser and it's rack. Instead the condenser rack was mounted too low and it was stuck there. There is a thumbscrew on the right side of the condenser rack that, when loosened, let's the condenser mount slide properly up. This re...
- Sun Mar 24, 2024 9:23 am
- Forum: Beginner's corner
- Topic: Centering & adjusting the Leitz 100Z lamp?
- Replies: 12
- Views: 939
Re: Centering & adjusting the Leitz 100Z lamp?
It's a bitza. Turns out that the stage is not incompatible with the condenser and it's rack. Instead the condenser rack was mounted too low and it was stuck there. There is a thumbscrew on the right side of the condenser rack that, when loosened, let's the condenser mount slide properly up. This res...
- Sun Mar 24, 2024 8:07 am
- Forum: Beginner's corner
- Topic: Centering & adjusting the Leitz 100Z lamp?
- Replies: 12
- Views: 939
Re: Centering & adjusting the Leitz 100Z lamp?
Based on what I read of Leitz 600 and 400 series condensers, their intercept distance with the flip-up top is around 1.2mm, please see below. Doesn't this mean that my problems are likely caused by the condenser not reaching a high enough position, close enough to the slide? Please see the photo I p...
- Sat Mar 23, 2024 2:07 pm
- Forum: Beginner's corner
- Topic: Centering & adjusting the Leitz 100Z lamp?
- Replies: 12
- Views: 939
Re: Centering & adjusting the Leitz 100Z lamp?
Thanks. I was able to realign the lamp condenser. It is straight now, not tilting. Also made a DIY target from a circular frosted glass filter. I think I was able to center the lamp according to the instructions in the 100Z user manual. Then I tried setting up the 402a Zernike condenser that I have ...
- Sat Mar 23, 2024 12:44 pm
- Forum: Beginner's corner
- Topic: Centering & adjusting the Leitz 100Z lamp?
- Replies: 12
- Views: 939
Re: Centering & adjusting the Leitz 100Z lamp?
Further investigation revealed that the lamp condenser (to the left from the bulb) seems to be pretty misaligned. Isn't that supposed to be standing straight and not tilted like in the photo?
- Sat Mar 23, 2024 12:17 pm
- Forum: Beginner's corner
- Topic: Centering & adjusting the Leitz 100Z lamp?
- Replies: 12
- Views: 939
Centering & adjusting the Leitz 100Z lamp?
Hello,
How do I center and adjust the lamp on a Leitz 100Z lamp when there is no adjustment disc?
Disc and procedure shown here:
How do I center and adjust the lamp on a Leitz 100Z lamp when there is no adjustment disc?
Disc and procedure shown here:
- Sat Mar 23, 2024 9:25 am
- Forum: Microscopes and optics
- Topic: Wild M8 vs Wild MZ3
- Replies: 19
- Views: 1472
Re: Wild M8 vs Wild MZ3
I agree with Scaro. Plus the darkfield base is a big advantage to have as an option, even if you mostly use gooseneck LEDs. Darkfield really improves things on a number of different subjects, compared to reflected light or transmitted brightfield. In fact, darkfield on a stereo is almost my go-to li...
- Sun Mar 17, 2024 11:08 am
- Forum: Microscopes and optics
- Topic: Leitz Diavert, modernization (kind of)
- Replies: 7
- Views: 564
Re: Leitz Diavert, modernization (kind of)
Thanks. This is a good overview of that Olympus objective series.
I'll probably first look at the Leitz Labovert line of 160mm tube length objectives. They may provide the best quality/cost ratio.
- Sun Mar 17, 2024 9:23 am
- Forum: Microscopes and optics
- Topic: Leitz Diavert, modernization (kind of)
- Replies: 7
- Views: 564
Re: Leitz Diavert, modernization (kind of)
I think there was a special Plan Apo series made for the Olympus IMT-2 and these had a longer working distance. However, you are right that this is crucial and needs to be verified. … Having just started my journey in the opposite direction [ bought an IMT-2 yesterday ], I will post links, later to...
- Sat Mar 16, 2024 2:48 pm
- Forum: Microscopes and optics
- Topic: Leitz Diavert, modernization (kind of)
- Replies: 7
- Views: 564
Re: Leitz Diavert, modernization (kind of)
The direct successor of the Diavert was the DL IM. First under the Leitz brand then Leica. Under Leica brand it made the change from finite to infinite optics. The Labovert was a very special animal standing separately. When using Olympus objective the fitting Olympus eye-pieces will give best resu...
- Sat Mar 16, 2024 8:12 am
- Forum: Microscopes and optics
- Topic: Leitz Diavert, modernization (kind of)
- Replies: 7
- Views: 564
Leitz Diavert, modernization (kind of)
Hi people, I was recently looking for info on the Wild M40 inverted microscope, one of which my university unit still has for field course teaching purposes. That scope has not been maintained very well and is obviously very long in the teeth. Anyway, on that googling trip, I bumped into this articl...
- Fri Mar 15, 2024 12:25 pm
- Forum: Microscopes and optics
- Topic: Leitz Orthoplan darkfield: dedicated DF or phase condenser?
- Replies: 8
- Views: 3567
Re: Leitz Orthoplan darkfield: dedicated DF or phase condenser?
The Polyvar DF condenser would have been a toric type and possibly with a wider front toric lens than earlier versions, for instance that used on the Zetopan, which only had an 18mm f.n. However, in order to save the cost of design and patenting , they might have split the DF function in two and us...
- Thu Mar 14, 2024 5:24 am
- Forum: Microscopes and optics
- Topic: Leica Reichert Jung Polyvar (models)
- Replies: 88
- Views: 36046
Re: Leica Reichert Jung Polyvar (models)
There's an estimate in this thread that some models of Polyvar originally cost 'tens of thousands of dollars'. Does anyone know more precisely? Perhaps find an original price list. I've read that a fully specced Leitz Aristoplan had a cost of roughly 100 000 USD. I wonder what fully specced (DIC & f...
- Sun Mar 10, 2024 7:57 am
- Forum: Microscopes and optics
- Topic: Carl Zeiss Jena, Jenaval
- Replies: 3
- Views: 505
Carl Zeiss Jena, Jenaval
Hello. I have a Jenaval in need of some restoring and maybe some components as well. This is a 'rescue' scope that has been in a departmental storage for who knows how long, at least a decade if not two. Fortunately in room temperature and dry air. Surprisingly, most mechanical parts seem to move, a...
- Fri Mar 08, 2024 7:41 am
- Forum: For forum members who want to buy and sell equipment
- Topic: to sell :Wild Leica operating stereomicroscope rotation plate 445349
- Replies: 7
- Views: 1900
Re: to sell :Wild Leica operating stereomicroscope rotation plate 445349
Okay, in that case it is maybe best to forget the swap. I value the Wild eyepiece pairs with diopter adjustment more than this rotation device. I could have parted with two pairs (of different mag) of the non-adjustable eyepieces.
- Thu Mar 07, 2024 7:56 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: to sell :Wild Leica operating stereomicroscope rotation plate 445349
- Replies: 7
- Views: 1900
Re: to sell :Wild Leica operating stereomicroscope rotation plate 445349
I think I have a couple pairs of different eyepieces for Wild stereos, some higher mag as well, some originals from the M8 era and even before. Doe your binocular have the diopter adjustment on the binocular tube or is a newer type without that (relying on diopter adjustment being on the eyepieces)?
- Thu Mar 07, 2024 7:29 am
- Forum: For forum members who want to buy and sell equipment
- Topic: to sell :Wild Leica operating stereomicroscope rotation plate 445349
- Replies: 7
- Views: 1900
Re: to sell :Wild Leica operating stereomicroscope rotation plate 445349
Hello,
Well, I do have quite many parts for Wild stereo microscopes Which ones would be of interest? I may also have an extra cold light source.
Well, I do have quite many parts for Wild stereo microscopes Which ones would be of interest? I may also have an extra cold light source.
- Wed Mar 06, 2024 7:59 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: to sell :Wild Leica operating stereomicroscope rotation plate 445349
- Replies: 7
- Views: 1900
Re: to sell :Wild Leica operating stereomicroscope rotation plate 445349
Hello,
Which Wild/Leica items would be of interest? Compound or stereo parts or both?
Which Wild/Leica items would be of interest? Compound or stereo parts or both?
- Tue Mar 05, 2024 1:42 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: WTB: Wild M8 0.4x auxiliary lens
- Replies: 8
- Views: 1576
Re: WTB: Wild M8 0.4x auxiliary lens
Ok, I won't dig through my stuff then.