Search found 692 matches
- Thu Jan 21, 2021 7:55 pm
- Forum: My microscope
- Topic: My Zeiss Photomicroscope III
- Replies: 41
- Views: 20040
Re: My Zeiss Photomicroscope III
I just picked one of these up, it’s in ok shape.. I can’t for the life of me figure out how to adjust the stage tension, not sure if it’s stuck or not.. it takes both hands to move it up and down... also anyone have resources on restoring these guys? I’ve read the user manuals, but not much help. T...
- Fri Jan 15, 2021 9:15 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: Wanted - Zeiss intermediate rings - and/or dic sliders for standard
- Replies: 11
- Views: 372
- Fri Jan 15, 2021 4:01 pm
- Forum: Microscopes and optics
- Topic: Silicone immersion objectives - any experience?
- Replies: 29
- Views: 465
Re: Silicone immersion objectives - any experience?
As far as refractive index goes it sounds fine but the mixture could differ in its dispersion properties relative to the oil.viktor j nilsson wrote: ↑Fri Jan 15, 2021 12:13 pmHere's another thought. A 50/50 glycerol/water solution has a RI of 1.398 at 20°C. Maybe that could be a workable substitute for silicone oil?
- Fri Jan 08, 2021 9:44 am
- Forum: Pictures and Videos
- Topic: Antique Diatom Arrangement
- Replies: 12
- Views: 534
Re: Antique Diatom Arrangement
Nice, I like the custom stage job.
- Thu Jan 07, 2021 9:12 pm
- Forum: Pictures and Videos
- Topic: Antique Diatom Arrangement
- Replies: 12
- Views: 534
Re: Antique Diatom Arrangement
Excellent images Kurt. What microscope have you mounted your diverse objectives on?
- Sun Jan 03, 2021 12:43 pm
- Forum: Pictures and Videos
- Topic: Chilodonella
- Replies: 9
- Views: 457
Re: Chilodonella
Very nice video
- Fri Jan 01, 2021 7:58 pm
- Forum: Pictures and Videos
- Topic: Botryococcus
- Replies: 0
- Views: 205
Botryococcus

The one and only time I saw Botryococcus.
- Fri Jan 01, 2021 12:09 pm
- Forum: Identification help
- Topic: Unidentified amoeboflagellate
- Replies: 2
- Views: 204
Re: Unidentified amoeboflagellate
Hello Hans, I think the organism was very stressed (terribly squished) but if I recall correctly I saw a second long flagellum before I started shooting the video. The trailing flagellum-like appendage was some sort of a cytoplasmic strand trailing behind. IDing squished things is generally difficul...
- Wed Dec 30, 2020 10:11 pm
- Forum: Identification help
- Topic: Unidentified amoeboflagellate
- Replies: 2
- Views: 204
Unidentified amoeboflagellate
Any clues what this amoeboflagellate might be?
- Thu Dec 24, 2020 9:12 pm
- Forum: Specimens, samples and slides
- Topic: Humidity chamber for extended observations
- Replies: 2
- Views: 219
Re: Humidity chamber for extended observations
. Neat idea. I have found Slide Mailers work well, though placing the slide inside if it has a large cover slip is a bit more finicky. It was suggested to me to coat the edges of the coverslip with vaseline using a syringe applicator. A small hole is left in the vaseline lining to allow for water a...
- Thu Dec 24, 2020 12:38 pm
- Forum: Specimens, samples and slides
- Topic: Humidity chamber for extended observations
- Replies: 2
- Views: 219
Humidity chamber for extended observations
When I observe water samples I tend to get rid of the specimen after I'm done with the observation. Last night, however, I decided to save the sample as it was very rich in protists and algae. I used a petri dish and a wet napkin to create a very simple humidity chamber in which I deposited the slid...
- Thu Dec 24, 2020 12:09 pm
- Forum: Microscopes and optics
- Topic: Amateur microscope for microphotography
- Replies: 12
- Views: 593
Re: Amateur microscope for microphotography
The Brunel offer is for a KF2 Junior in, from what I can see, a good condition. But I think the Vickers might be real deal in your case. I'd say go for that first, see if you can arrange with the seller to check it out and if you're happy with the performance go for it. For 90 pounds it might well b...
- Thu Dec 24, 2020 11:07 am
- Forum: Microscopes and optics
- Topic: Amateur microscope for microphotography
- Replies: 12
- Views: 593
Re: Amateur microscope for microphotography
Hi Giulio, I would advise you against buying the Zeiss you linked to. All of the objectives have been substituted with generic non-Zeiss objectives and there are signs of damage if you look at the binocular head. For nearly 400 pounds its not a good deal at all. I think this one would be much better...
- Mon Dec 21, 2020 10:17 am
- Forum: Pictures and Videos
- Topic: Freshwater Dinoflagellates
- Replies: 14
- Views: 1125
Re: Freshwater Dinoflagellates
glad you like it
It should, at least I saw them with my scope but maybe this particular individual had lost its flagellum.
- Sun Dec 20, 2020 8:48 pm
- Forum: Pictures and Videos
- Topic: Freshwater Dinoflagellates
- Replies: 14
- Views: 1125
Re: Freshwater Dinoflagellates
When I posted the Dinoflagellates on another microforum I was approached by a SEM enthusiast about whether I could send him a sample of the organisms. So I did and sometime later he came back with a bunch of amazing SEM images. Here is one of them. https://www.mikroskopie-forum.de/index.php?action=d...
- Sun Dec 20, 2020 6:49 pm
- Forum: Pictures and Videos
- Topic: Algal blooms and their guards
- Replies: 6
- Views: 336
Re: Algal blooms and their guards
Wow! Extremely good images Håkan.
- Mon Dec 14, 2020 6:10 pm
- Forum: Identification help
- Topic: Is this Beggiatoa
- Replies: 4
- Views: 461
Re: Is this Beggiatoa
Most likely. If you have DF , the sulphur inclusions will iridesce. Identification to some degree depends on the origin of the sample. Proximity to sewage is a common origin. Eutrophicated lake beds. Any aquatic habitat with a high level of biological oxygen depletion, such as a swamp with yearly c...
- Mon Dec 14, 2020 10:26 am
- Forum: Pictures and Videos
- Topic: Ilex leaf with worm hole - pen ink stain
- Replies: 11
- Views: 966
- Mon Dec 14, 2020 9:09 am
- Forum: Identification help
- Topic: Is this Beggiatoa
- Replies: 4
- Views: 461
Is this Beggiatoa
Gliding filamentous bacteria, I suspect Beggiatoa maybe someone can confirm.
- Sun Dec 13, 2020 8:22 pm
- Forum: Pictures and Videos
- Topic: Ilex leaf with worm hole - pen ink stain
- Replies: 11
- Views: 966
Re: Ilex leaf with worm hole - pen ink stain
Very nice section and image Bob. Have you tried to section sick plants such as ones infected by fungi/bacteria?
- Wed Dec 09, 2020 12:17 pm
- Forum: Microscopes and optics
- Topic: Question about setting up Zeiss DIC
- Replies: 7
- Views: 740
Re: Question about setting up Zeiss DIC
Hi Wes, do you use the DIC system with the single analyser slide or the newer one with individual analyser slides pe robjective? The old system doesn't allow the use of the full objectives aperture anyway. Zeiss specifically sait to use oil immersion even for the low power objectives. This might be...
- Wed Dec 09, 2020 7:33 am
- Forum: Microscopes and optics
- Topic: Question about setting up Zeiss DIC
- Replies: 7
- Views: 740
Re: Question about setting up Zeiss DIC
Bob, would you have a rough idea or guidance in immersing the Zeiss condenser to the slide (dry vs. water vs. oil) at something like 25x and 40x magnifications -- or even lower? Does water help? Oil significantly more? If you do the trig calculation for internal reflection at air-glass interfaces y...
- Tue Dec 08, 2020 4:40 pm
- Forum: Specimens, samples and slides
- Topic: Experiments with botanic stains
- Replies: 10
- Views: 777
Re: Experiments with botanic stains
Do you have a link where your microtome and sectioning technique are described?
- Tue Dec 08, 2020 4:27 pm
- Forum: Specimens, samples and slides
- Topic: Experiments with botanic stains
- Replies: 10
- Views: 777
Re: Experiments with botanic stains
Impressive results Bob! Is this a hand section, looks great. Also which component gives the yellow color?
- Mon Dec 07, 2020 12:20 pm
- Forum: Pictures and Videos
- Topic: Oamaru Diatoms
- Replies: 4
- Views: 447
Re: Oamaru Diatoms
Thank you viktor j nilsson and 75RR Would a side view be triangular, similar to Triceratium scitulum in images 7 and 9 below? https://pubs.usgs.gov/of/2012/1163/pages/Plates/46_Singapore.pdf I think it looks more like a coffee table. https://i.pinimg.com/originals/91/da/b1/91dab18ead4dc3c97d5b049166...
- Mon Dec 07, 2020 10:00 am
- Forum: Pictures and Videos
- Topic: Oamaru Diatoms
- Replies: 4
- Views: 447
Oamaru Diatoms

Triceratium favus var quadrata

Stictodiscus californicus var areolata
- Fri Dec 04, 2020 8:17 am
- Forum: Pictures and Videos
- Topic: Exploding fluorescent amoeba
- Replies: 13
- Views: 771
Re: Exploding fluorescent amoeba
Thanks Bruce! I once asked Ferry Siemensma about an amoeba I had made a video of and he just said Mayorella.Bruce Taylor wrote: ↑Wed Dec 02, 2020 10:05 pmAs for the ID, my understanding is that is extremely difficult to distinguish most Mayorella species from Korotnevella, unless you have access to SEM.
- Fri Dec 04, 2020 8:15 am
- Forum: Miscellaneous
- Topic: stuck PZO binocular head
- Replies: 1
- Views: 260
Re: stuck PZO binocular head
Amateur, everyone knows you should put in a pressure cooker and then bang it with a hammer.
- Wed Dec 02, 2020 7:42 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: 7-objective revolver for WL, Standard (Zeiss)
- Replies: 0
- Views: 563
7-objective revolver for WL, Standard (Zeiss)
https://www.ebay.de/itm/7-Fach-Wechsel- ... Swne1fx-HM
Found this while browsing ebay, last one I saw sold for a few hundred and I thought someone here might be interested.
Found this while browsing ebay, last one I saw sold for a few hundred and I thought someone here might be interested.
- Wed Dec 02, 2020 5:31 pm
- Forum: Pictures and Videos
- Topic: Exploding fluorescent amoeba
- Replies: 13
- Views: 771
Re: Exploding fluorescent amoeba
It came with the microscope, its installed by default. The photo below shows you where its placed on a Universal stand. You might be able to source one at a reasonable price on Ebay (search for KG1 heat absorbing filter). That is interesting. Was going to put it on the field diaphragm housing filte...