MicrobeHunter.com Microscopy Forum

Looking for a quintuple nosepiece for my Series 10 'scope, USA lower 48 states only due to shipping costs. Thanks in advance.

The 3L is definitely a nice unit but overkill for other than a lab environment, unless you can get one really cheap. I was just looking for an inexpensive way to check nd, whether for purchased floatation fluid or home-made. I looked at the 3L and some similar units; they were all in the $200 to $50...

Just an idea that maybe some people haven't thought of. Floatation fluids can be purchased having a specific gravity of 1.2 - 1.3, but you can also make your own with Epsom salts, Sodium Nitrate, and I'm sure, a multitude of other combinations that I know nothing about. However, testing them for spe...

I wanted to try an LED mod on a AO 1031 illuminator for my AO series 10 'scope. I was inspired by dtsh from whom I was able to obtain a 1031 illuminator that was missing the special bulb holder for the 6v, 20W halogen bulb. Well I stripped out the transformer and brightness control circuit and went ...

Nice find; the chart at the end is especially nice!

There is a book that can be bought very inexpensively through Abe Books called Diagnostic Parasitology for Veterinary Technicians by Charles Hendrix and Ed Robinson that covers just about everything you might want to know on that subject as well as a multitude of other things. Of course, as the titl...

The last I heard, the original socket for the 1031 illuminator was unobtainable as a stock item from the manufacturer. There may be some n.o.s. ones available somewhere, like a former AO dealer or scientific bulb dealer. They were a custom porcelain socket built to fit into a very tight space and h...

I have one in good shape, but it's missing the lamp and lamp socket.I figure it's unlikely you have the lamp socket, but if there's a chance to get parts I can't use to someone who can, I figure it's worth mentioning. I have had a couple of them, but if you have a 1036A it is pretty easy to convert...

Looking for this in-base transformer illuminator for a Series 10 microscope, at a reasonable price, of course. I'm in Virginia, USA so I don't want to pay for overseas shipping, etc.

There are a lot of people in this world who struggle with their health. The easiest way to avoid depression is to be busy. When you are occupied, depression has no place in your life. To go along with this, I tell people, and myself, "Whenever you feel depressed, go do something nice and help someo...

Time to do some horse-trading (maybe some wife-trading, too!!)

I wouldn't have expected that much of a difference! That is excellent. Definitely worth having one on hand. "Necessity, the mother of invention." Thanks for the details on how it is made.

Electrolytic capacitors are voltage specific, meaning plus to plus and minus to minus. The positive pole will be marked with a plus sign. Hook that up backwards and the explosion could be a real mess. The black band at one end of the capacitor (in the picture above) indicates the "+" side, or as yo...

There is a repair manual on Alan Wood's website that has schematics in it. (http://www.alanwood.net/downloads/olymp ... manual.pdf). The only .1 uf cap that I can find is in the 100v power supply. You might want to download the manual and see which supply you have.

From its size, I would say .1 uf at 500 VDC. It looks too small to be 1 uf at that voltage, but just a guess. I think the "dot" ahead of the 1 is a decimal point. The band at the far end of the cap would indicate it is polarized, but a non-polarized one would work. I believe the 20k is the tolerance...

A good text to read is "Turtles All The Way Down; Vaccine Science and Myth." It covers a lot about disease and the development of "cures."

The Swift series SW150, SW200 are battery operated and can be had for ~$100.00 US dollars, or less on Ebay. They are very basic, but the images are reasonably good. I think they were meant for entry level, high school students, but I would think they would make good, inexpensive field scopes.

Personally, I would ask for a complete refund, with a return shipping label, if it wasn't in the condition advertised. Trying to determine if it is "half good" or some proportion thereof for a partial refund is purely subjective. The other option is to suggest a partial refund and let the seller com...

Kudos on the repair and on giving the centrifuge a new lease on life and keeping it out of landfill--always a win-win! I find it rather distressing that companies refuse to repair items, such as these, down to the component level and only want to replace complete modules at extreme costs. This was ...

A short story: I was looking for a small variable speed centrifuge (see previous thread) and ran across this on Ebay for $53.00, shipped. The seller indicated it had an error code E36, no brake after run. I was able to find a service manual with schematics and downloaded it prior to purchase. The br...

PeteM wrote: ↑

Thu Aug 11, 2022 6:58 pm

I might try free-machining steel as Gerry does (good idea), though ideally might want something unlikely to rust.

If you dip the parts in "tool black" or gun bluing, and then wipe with a light oil, they won't rust.

Gerry - Good idea - your tight-fitting brass mandrel idea might help. There's been enough drag with my cut-off inserts that the really thin shims got deformed. Better lube to make sure there's not the slightest build-up of aluminum on the cut-off edge might also help. Pete, I should have mentioned ...

If you know someone with a lathe, they can bore a rod to the proper ID and turn the OD to whatever you need, then "slice" them off to whatever thickness you require. I have made several this way. I've made a bunch of thicker parfocal shims out of aluminum tube bored to RMS inside diameter - but it ...

If you know someone with a lathe, they can bore a rod to the proper ID and turn the OD to whatever you need, then "slice" them off to whatever thickness you require. I have made several this way.

That can be brazed. Because of the minimal amount of deflection required of the part, most any material can be used for the part. If you can't find anyone to braze it for you, you are welcome to send it to me and I'll braze it, and perhaps make you a new replacement for just shipping costs. I make r...

Using the McMaster method, you only need a 4X objective for initial focusing and a 10X for the counting, assuming a 10X eyepiece. A mechanical stage makes life a lot easier, as well. I have several pdf files on this if interested.

I have AO model Sixty and AO Series 10 microscopes, Both are well made and relatively inexpensive used. The AO Sixty is not as capable as the Series 10, but still a good scope and less costly than the 10. Both are available with 4-objective turrets and will be quite suitable for your task. I have ha...

Well, is there some chart that one can use that tells what are appropriate RPM/g's for certain separation tasks?

I see some people use centrifuges, for example, to separate microbes in pond water. Are they merely a convenience or are they a "should have" piece of equipment for microscopy? Also, there are many options for centrifuges, variable speed vs. fixed speed, fixed angle rotor vs. variable-angle bucket r...

I know from a little research in using UV for sterilization purposes, that the spectrum is basically divided into 3 parts, UVA, UVB, and UVC, with UVC being the most harmful of the three and best for sterilization. You might learn more about UV if you research Germicidal Sterilization equipment as t...