Search found 139 matches

by Tom Jones
Sun Oct 14, 2018 4:11 am
Forum: Beginner's corner
Topic: pls help with recc. a microscope
Replies: 19
Views: 4034

Re: pls help with recc. a microscope

Lisa, Get Lorez's microscope. Get a good cell phone adapter, mount the cell phone on the microscope eyepiece (horizontally please - NO vertical video as you loose too much screen real estate and resolution), hook up an HDMI adapter from the cell phone to the HDMI input for the white board. Voila! Yo...
by Tom Jones
Sat Sep 22, 2018 3:59 am
Forum: Illumination Techniques
Topic: Better circular compass cutter
Replies: 11
Views: 3184

Re: Better circular compass cutter

I use a 3-50mm punch set from Mayhew that I like a great deal. Not cheap at all, but if you're a perfectionist, this is as good as I've seen. It will even cut concentric circles: https://www.amazon.com/Mayhew-66010-Met ... 82QRI?th=1
by Tom Jones
Fri Aug 24, 2018 4:42 pm
Forum: For forum members who want to buy and sell equipment
Topic: Glass-bottomed culture dishes for sale
Replies: 10
Views: 2680

Re: Glass-bottomed culture dishes for sale

Thanks Bill! I've been meaning to look up a source for those.
I just ordered a couple of them from you.

Tom
by Tom Jones
Wed Aug 22, 2018 3:07 am
Forum: Microscopes and optics
Topic: Magnification Changer
Replies: 7
Views: 2290

Re: Magnification Changer

In addition to apochronaut's comments, mag changers also can be quite useful to aid in framing your photographs or videos in that they will allow you to more easily fill the sensor frame so you don't lose as much as when cropping in post. Particularly handy when shooting video as cropping in post is...
by Tom Jones
Tue Aug 21, 2018 2:57 pm
Forum: Identification help
Topic: new vedios!! Yeast or Parasite in my Stool???
Replies: 9
Views: 2711

Re: new vedios!! Yeast or Parasite in my Stool???

Some yeast in stool is normal. If you're sick and think you might have parasites :o , you might want to go to your physician and ask for a stool culture and Ova and Parasite Exam. Have a real clinical lab go through the proper bacterial culturing, O&P concentration and staining procedures. You proba...
by Tom Jones
Tue Aug 14, 2018 2:39 am
Forum: Illumination Techniques
Topic: How is this not DIC? Oblique illumination? HOW?
Replies: 10
Views: 4541

Re: How is this not DIC? Oblique illumination? HOW?

He explains his technique in the comment section of another video: https://www.youtube.com/watch?v=7xvkEssi-Ss He doesn't use a patch stop, but de-centers the Abbe condenser, and sometimes uses a Raynox DCR-250 macro lens sitting on top of the illumination port. Oblique effect is obtained by condens...
by Tom Jones
Wed Jul 04, 2018 3:50 am
Forum: Beginner's corner
Topic: Replacement 100x Objective for Olympus cx31
Replies: 6
Views: 1664

Re: Replacement 100x Objective for Olympus cx31

Marty, The new price they quoted isn't that bad, and might be your best bet if you have a decent relationship with the vendor. I wouldn't go with an Amscope lens because you'll be mixing the Amscope objective optics with the Oly tube lens. Being physically interchangeable and optically interchangeab...
by Tom Jones
Tue Jul 03, 2018 1:28 am
Forum: Beginner's corner
Topic: Replacement 100x Objective for Olympus cx31
Replies: 6
Views: 1664

Re: Replacement 100x Objective for Olympus cx31

Marty,

Let me check my spares. I *think* I have one I could make you a deal on. Hopefully I can check tomorrow.

Tom
by Tom Jones
Sun Jun 17, 2018 2:43 am
Forum: Specimens, samples and slides
Topic: Formula for glycerin gelatin mounting medium
Replies: 14
Views: 8308

Re: Formula for glycerin gelatin mounting medium

JackyMac

The glycerine, gelatin and formalin add up to 67%. I presume the other 33% is water?

Tom
by Tom Jones
Wed Apr 18, 2018 2:40 pm
Forum: Beginner's corner
Topic: First time buyer - looking for benefits and pitfalls of various models
Replies: 22
Views: 3700

Re: First time buyer - looking for benefits and pitfalls of various models

Technicolor, Let the homework begin! I see you are in LA. I'm East in Redlands. Since it's really hard to figure out what you want to do without a bit (or more) of hands-on experience with some of the microscopes available, I thought you might like the opportunity to take a closeup look at some of t...
by Tom Jones
Thu Apr 05, 2018 3:44 am
Forum: Off Topic
Topic: How can eBay seller 'have it's cake, and eat it too?'
Replies: 14
Views: 3267

Re: How can eBay seller 'have it's cake, and eat it too?'

They can't. I expect an item to be as the Ebay description states. Ebay has very clear descriptions, and sellers are held to them. Used does NOT mean "as is" regardless of what the seller says. If they say "for parts or repair" then you're done. They can't sell crap as "used" and hide behind "as is"...
by Tom Jones
Tue Mar 27, 2018 1:15 am
Forum: My microscope
Topic: Reichert Zetopan?
Replies: 5
Views: 2886

Re: Reichert Zetopan?

KB1FRO,

Definitely a Zetopan. Better yet, the Ph A (yellow band) objectives are Anoptral Phase Contrast :o . They're pretty rare, and should do quite nicely if you have a Zetopan phase condenser.

Tom
by Tom Jones
Tue Mar 06, 2018 5:04 pm
Forum: Beginner's corner
Topic: I'm a Newbie - Need help cleaning the 400x objective lens.
Replies: 3
Views: 1023

Re: I'm a Newbie - Need help cleaning the 400x objective lens.

Q-tip moistened with 70% - 90% isopropanol (rubbing alcohol) works fine. Gently, with a circular motion, center to outer area. Don't reuse the Q-tips. Several passes, gently, if necessary to remove the oil and other junk. It usually takes me a half-dozen or so passes, fresh Q-tip each time, to get a...
by Tom Jones
Wed Jan 17, 2018 3:49 am
Forum: Beginner's corner
Topic: Single image science lessons
Replies: 3
Views: 1214

Re: Single image science lessons

PeteM, Way cool!! :o There's not enough of this kind of outreach!! I love it! I've done a bit, but the big shows are only a couple of days, once a year. Over 41,000 kids so far though since 2010. As you can probably tell, I like teaching the kids photomicrography with their cells phones, too. 8-) ht...
by Tom Jones
Wed Nov 29, 2017 4:26 pm
Forum: Beginner's corner
Topic: Starting with identifying a decent microscope
Replies: 24
Views: 3977

Re: Starting with identifying a decent microscope

Kurt, Yes. Q-Tips and cotton balls from the grocery store or pharmacy, but gently. Pressure can drive any hardened debris into the soft optical glass of the lens and cause a scratch. I really dislike lens tissue. People tend to just stick it on their finger and rub it flat on the objective lens, usu...
by Tom Jones
Wed Nov 29, 2017 3:12 am
Forum: Beginner's corner
Topic: Starting with identifying a decent microscope
Replies: 24
Views: 3977

Re: Starting with identifying a decent microscope

Amoeba, I did also come across this: http://www.quekett.org/ A fair bit of information it seems, but you have to pay to join in order to access much of the site. Since you are in the UK, and new to this (and actually even if you were not) Queckett is one of the best resources available. LOTs of loca...
by Tom Jones
Tue Nov 07, 2017 3:44 pm
Forum: Beginner's corner
Topic: Viewing Red Blood Cells
Replies: 14
Views: 2242

Re: Viewing Red Blood Cells

.. Immersion Oil can be applied directly to a dry specimen of Blood, with no coverslip. Clinical labs do it all the time for CBC's and body fluid smears. No one coverslips grams stains or the like, either. A thin layer first to substitute for the coverslip, then a larger drop when using the oil imm...
by Tom Jones
Thu Jul 27, 2017 12:11 am
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: OM Photomicro Adapter L
Replies: 6
Views: 1964

Re: Wanted: OM Photomicro Adapter L

It's the beige model :D . No blood please. I've seen enough in my career! PayPal is best. I'll PM you my PayPal email address. You can reply with your shipping address. I'll pack it up tomorrow, and send it out Friday with tracking. I'll send the tracking number to you via your PayPal email address....
by Tom Jones
Wed Jul 26, 2017 10:10 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: OM Photomicro Adapter L
Replies: 6
Views: 1964

Re: Wanted: OM Photomicro Adapter L

Hi Moose,

The adapter is in good shape and I do have a spare NFK 2.5x projection eyepiece. $225 for both, including shipping.

Tom
by Tom Jones
Wed Jul 26, 2017 2:18 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: OM Photomicro Adapter L
Replies: 6
Views: 1964

Re: Wanted: OM Photomicro Adapter L

Hi Moose,

I have a Photomicro Adapter L I'd part with, and I think I have a spare NFK 2.5x projection eyepiece, too. Let me check later this morning to be sure the adapter is in good shape.

Tom
by Tom Jones
Thu Jul 20, 2017 2:50 am
Forum: Beginner's corner
Topic: Smear mounts and immersion oil
Replies: 6
Views: 2195

Re: Smear mounts and immersion oil

Even, During my 40 years in clinical labs, I've looked at many, many thousands of hematology and gram stain smears with oil immersion and no cover slip. In fact, I've never seen anyone use a cover slip unless it is a permanently mounted slide. Just make sure they're dry first! While using a cover sl...
by Tom Jones
Tue Jul 11, 2017 2:21 am
Forum: Pictures and Videos
Topic: Homalozoon ciliate and its attack on rotifer
Replies: 19
Views: 2181

Re: Homalozoon ciliate and its attack on rotifer

Wow :o Very, very nice.

Tom
by Tom Jones
Sat Feb 18, 2017 4:25 pm
Forum: Camera systems and imaging
Topic: How do you keep track of image metadata?
Replies: 12
Views: 3021

Re: How do you keep track of image metadata?

Discipline. No matter what method you use, it will require discipline to succeed. :shock: Treat your microscopy as a scientific examination, and the photography as part of a method of recording that examination. The other part, just as necessary, is consistently recording metadata. The key is consis...
by Tom Jones
Wed Feb 08, 2017 5:30 pm
Forum: Microscopes and optics
Topic: MAYBE THIS SHOULD BE IN BEGINNERS CORNER but....
Replies: 6
Views: 1422

Re: MAYBE THIS SHOULD BE IN BEGINNERS CORNER but....

CE, We never had NC objectives in the hematology labs I've worked in, and never used cover slips on non-permanent slides. We always spread a drop of immersion oil across the dried blood smear for low magnification to eliminate the diffraction caused by the dried cells. If, after we added another dro...
by Tom Jones
Mon Jan 23, 2017 4:45 pm
Forum: Off Topic
Topic: the microscopy stuck
Replies: 14
Views: 3798

Re: the microscopy stuck

MicroInspector, Stuck? Really? Turn you imagination and curiosity loose! If you can get it under the objective, hold it still and and figure out how to light it, pretty much ANYTHING is fair game. That gives you effectively an infinite number of choices :shock: . Experiment! You can spend your entir...
by Tom Jones
Tue Jan 17, 2017 4:10 pm
Forum: Beginner's corner
Topic: What purposes people use scopes ?
Replies: 7
Views: 1971

Re: What purposes people use scopes ?

Kalleboy,

Really? :roll: Go to Google and type "uses for a microscope" or some variation thereof. Hit "Enter". Read. A lot. Think. A lot. Read some more.

Tom
by Tom Jones
Sun Jan 15, 2017 3:01 am
Forum: Miscellaneous
Topic: Seeking complete BHTU manual, or at least page 6
Replies: 4
Views: 1565

Re: Seeking complete BHTU manual, or at least page 6

Here you go. Page 6 from an intact BHTU manual. Not all that useful once you see it. But until you do, you just never know! 8-)

Tom
by Tom Jones
Sun Dec 11, 2016 4:04 pm
Forum: Microscopes and optics
Topic: Advice about possible Bh2 purchase please
Replies: 12
Views: 2318

Re: Advice about possible Bh2 purchase please

The only thing I can think of for a microscope that cost pennies are slides and cover slips :roll: . Everything else costs $$ :shock: . The good thing is, properly taken care of, a good microscope will last the rest of your life and then some. You will need an extension/camera adapter tube with ANY ...
by Tom Jones
Sun Dec 11, 2016 2:07 am
Forum: Microscopes and optics
Topic: Advice about possible Bh2 purchase please
Replies: 12
Views: 2318

Re: Advice about possible Bh2 purchase please

Ask the merchant if he'll swap out the infinity objectives for a set of DPlans. Pick up the right NFK projection lens for the trinoc and you're on your way. If he won't, and the price is nice enough, buy it, sell the infinity lenses for whatever you can get, and replace them with DPlans (or Splans i...