Microscope Forum http://www.microscopeforums.com General microscopy forum hourly 1 1970-01-01T00:00Z en vBulletin 2010-07-30T22:22:41Z http://www.microscopeforums.com/images/misc/rss.jpg Microscope Forum http://www.microscopeforums.com Vacuum Initiation problem for JEOL 6460LV http://www.microscopeforums.com/f18/vacuum-initiation-problem-jeol-6460lv-377.html Hey guys, we recently moved a JEOL 6460LV from its original location to a new facility. The enitre system is working normally except for its ability to maintain high vacuum or low vacuum. Have any of you experienced a similar problem regardless of the type of SEM you have ? Can you guys think of any possible solutions. My best guess right now is either the pressure sensors have gone bad or that there is insufficient oil in the rotary pumps. Any help would be greatly appreciated. Thanks Prawi Hey guys,
we recently moved a JEOL 6460LV from its original location to a new facility. The enitre system is working normally except for its ability to maintain high vacuum or low vacuum. Have any of you experienced a similar problem regardless of the type of SEM you have ? Can you guys think of any possible solutions. My best guess right now is either the pressure sensors have gone bad or that there is insufficient oil in the rotary pumps.

Any help would be greatly appreciated.

Thanks
Prawi ]]> 2010-07-26T20:00:41Z prawinath DIY Solutions Something from an air sample http://www.microscopeforums.com/f5/something-air-sample-376.html Hello,

I'm using a DIY air sampler to collect stuff from the air and play with things like pollen counts, air quality monitoring, etc. I found something interesting in today's sample:

http://avtanski.net/projects/air_sam...full/p0132.jpg

There are quite a few of those, but just one had this sprouting thing on it.

Do you have some idea what it might be?

Regards,

- Alex ]]> 2010-07-26T02:37:47Z avtanski Light Microscopes General Discussion microscope for testing hair http://www.microscopeforums.com/f2/microscope-testing-hair-375.html Hi all, slighly random but I buy wigs and need a microscope to test whether the hair is human or synthetic or mixed.

Im wondering what spec microscope would be able to clearly show me the difference between a synthtic strand and a human strand of hair.

I have been looking at the 200x and 400x usb microscopes on ebay

here's a link to the type i was looking at B. NEW VEHO 400x MAGNIFICATION USB DIGITAL MICROSCOPE on eBay (end time 21-Aug-10 10:19:40 BST)

Does anyone think this would do the job?

:confused: ]]> 2010-07-25T13:10:59Z wighair Microscopeforums.com Not sure where/how to start http://www.microscopeforums.com/f5/not-sure-where-how-start-374.html Hi All,
Unfortunately I've suffered with skin conditions for years. Some of my conditions receive very little in the form on medical studies, or have had promising studies that haven't been taken any further. I've been trying different things over the last year and monitoring my progress with notes and high res photos. Now I feel the need to take things further, and start looking at skin samples under an appropriate microscope(s) and compare what I can find to published medical studies.
I need to be able to detect fungals, like yeast and mites like demodex. Being able to evaluate sebum, sweat and their consistency is important as well. If possible also the structure of the skin. I have no idea where to start, a few desirables I can think of:-
* Easy digital imaging
* PC connection so I can see things live on screen
* Ideally some way of viewing pores on my face... I'm guessing some form of stereo scope hooked up to a monitor...

Don't worry I won't be cutting bits of skin off, enough flakes off already as it is :'(

I know I might sound mad, but I've been doing well in my MSc (although not biology related), so I should be smart enough to figure figure things and and make my own observations. Just need to know what kit to get, how to get started, etc.
Also pointers onto resources for the kinds of microbes I'll be looking at would be great :)


Cosmic ]]> 2010-07-22T02:06:09Z cosmicnet Light Microscopes General Discussion Anyone ever see this before? http://www.microscopeforums.com/f5/anyone-ever-see-before-373.html I would like to know what this scope is designed to do!!:confused: I would like to know what this scope is designed to do!!:confused:
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]]> 2010-07-22T00:16:17Z springerswimmer Light Microscopes General Discussion Help with new microscope http://www.microscopeforums.com/f5/help-new-microscope-372.html I've got a SP-94 compound microscope. It seems very similiar or the same as the SP100.

All I know about microscopy, I've learnt in the last couple of days. I have played with the scope a fair bit but I am unsure as to where it lies in terms of darkfield and phase contrast.

It has a ring under the condensor in which I can place one of two different coloured discs, one blue the other white. You can swing the disc holder in and out, with each colour giving a different effect. However, if the holder is half way in, I get a darkfield type effect. Is this "true" darkfield, all that seems to be happening is the disc holder edge is blocking out the light under the specimen as I swing it back and forth.

This effect doesn't work so well with the x40 objective and not at all at x100.

Any help appreciated... ]]> 2010-07-14T21:48:58Z sWozzAres Light Microscopes General Discussion OLD Olympus Microscope... http://www.microscopeforums.com/f5/old-olympus-microscope-371.html Hey everyone. I have had personal reasons for a microscope at home, and I have borrowed one from my Dad's workplace, only to find that it is a rare Olympus Elgeet M E Microscope, very similar to this one: NR-Vintage-Rare-OLYMPUS ELGEET M E MICROSCOPE # 200922 the only difference being it has one body tube. Is there any sort of online reference such as a manual for this microscope? And if not, where exactly do I put my slides in order to view them :p I'm slightly lost, mainly because everything is above the objectives instead of below... please help :confused:

Joel ]]> 2010-07-13T13:55:30Z computergeek93 Light Microscopes General Discussion Need help with seeing specimen bacteria http://www.microscopeforums.com/f5/need-help-seeing-specimen-bacteria-369.html Hi, I'm all new to microscopy and the forum so I'm looking for bits of knowledge. I'm a high school grad and got a compound microscope as a gift (model Celestron 44320 digital kit or sumthing like that). I used to use microscope in high school's biology so I made a slide of pond water. The microscope has no dispenser and I don't like using stains because it's hard. Is there anyway I can view bacteria using darkfield illumination?
Thank you so much! any advice is appreciated :] ]]> 2010-07-12T03:47:09Z robwadeson Light Microscopes General Discussion Microscope Accuracy http://www.microscopeforums.com/f3/microscope-accuracy-367.html Hello Guys,

I was wondering if anybody has performed an accuracy study on a microscope to make accurate length measurements. For example some formal way of saying to the customer that the length we measured is X with the actual value being +-1 % of the observed value X. I performed Type I Gage Study to assess the microscope's ability to make accurate length measurements but I have never performed any formal study to make a statement like I mentioned above. Any help is appreciated. ]]> 2010-07-05T09:23:19Z jimmy0ad Welcome White LED Ring Light from Aven enhances visibility for any microscope http://www.microscopeforums.com/f22/white-led-ring-light-aven-enhances-365.html List price:* _$200_, plus shipping For more information or to receive a catalog, call Aven at (734) 973-0099. A digital catalog is at Optical Inspection Tools & High Performance Precision Hand Tools: Aven Tools (http://www.aveninc.com). *-* Aven, Inc. of Ann Arbor, Mich., manufactures and distributes high-performance precision tools and optical systems for industrial, scientific, research and education applications. More than 750 products include video inspection systems, integrated portable microscopes and video borescopes.]]> A versatile accessory allows pinpoint illumination control at varied intensity levels. The White LED Ring Light from Aven, Inc. combines seven brightness choices with four lighting modes for customized adaptation to any specimen or objective.

Sixty long-lasting LEDs provide soft, shadow-free illumination for life science labs, industrial inspection and materials analysis. The flicker-free white lights retain color integrity over time and operate at low temperature to minimize user discomfort, even for long spans.

"Full" mode operation uses all of the evenly distributed LEDs (35,000 lux), or users can illuminate one, two or three quadrants. Seven brightness settings add further precision.

This energy-efficient Ring Light, designed for use with any standard microscope, offers a broad range of instant adjustments. Engineers, researchers or technicians can assure optimal visibility with fingertip ease.

Applications include biotechnology research, health care lab work, forensics, gemology and failure or defect analysis of small parts.

Installing the Aven Ring Light below a microscope lens allows a working distance of 50 to 160 mm. The plug-in accessory has a 40 mm inner diameter and 70 mm outer diameter.

--> List price: $200, plus shipping

For more information or to receive a catalog, call Aven at (734) 973-0099. A digital catalog is at Optical Inspection Tools & High Performance Precision Hand Tools: Aven Tools.
-
Aven, Inc. of Ann Arbor, Mich., manufactures and distributes high-performance precision tools and optical systems for industrial, scientific, research and education applications. More than 750 products include video inspection systems, integrated portable microscopes and video borescopes.
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]]> 2010-07-04T20:09:19Z Mike Shahpurwala Light microscopes (and parts) White LED Ring Light from Aven improves visibility for any microscope http://www.microscopeforums.com/f25/white-led-ring-light-aven-improves-364.html A versatile accessory allows pinpoint illumination control at varied intensity levels. The White LED Ring Light from Aven, Inc. combines seven brightness choices with four lighting modes for customized adaptation to any specimen or objective.

Sixty long-lasting LEDs provide soft, shadow-free illumination for life science labs, industrial inspection and materials analysis. The flicker-free white lights retain color integrity over time and operate at low temperature to minimize user discomfort, even for extended times.

"Full" mode operation uses all of the evenly distributed LEDs (35,000 lux), or users can illuminate one, two or three quadrants. Seven brightness settings add further precision.

This energy-efficient Ring Light, designed for use with any standard microscope, offers a broad range of instant adjustments. Engineers, researchers or technicians can assure optimal visibility with fingertip ease."

Applications include biotechnology research, health care lab work, forensics, gemology and failure or defect analysis of small parts.

Installing the Aven Ring Light below a microscope lens allows a working distance of 50 to 160 mm. The plug-in accessory has a 40 mm inner diameter and 70 mm outer diameter.

For more information or to receive a catalog, call Aven at (734) 973-0099. A digital catalog is at Optical Inspection Tools & High Performance Precision Hand Tools: Aven Tools.
-
Aven, Inc. of Ann Arbor, Mich., manufactures and distributes high-performance precision tools and optical systems for industrial, scientific, research and education applications. More than 750 products include video inspection systems, integrated portable microscopes and video borescopes.
Attached Images
 
]]> 2010-07-04T20:00:15Z Mike Shahpurwala News about microscopy Stereo micoscopes http://www.microscopeforums.com/f5/stereo-micoscopes-363.html I bought a stereo microscope a few days ago, and have now spent several hours putting it through its paces. Its a somewhat different kettle of fish compared to my trusty old compound microscope. The stereo microscope has 4x zoom, and powers from 10 to 40x. One can switch between incident and transmitted light, and the intensity is variable. I have a photo adapter on order, which suposedly threads into the trinocular so that one can connect a dSLR to the setup.

The scope seems suited for viewing objects no smaller than half a mm or so, or to bring out suface detail in large objects like coins and rocks. Sand grains look amazing, as do small flowers and insects. There is hardly any sample preparation required. Just plunk the object down, fire up the illumination and off you go. Aquatic critters, I expect, can be placed in a wet petri dish and examined directly.

I was blown away by the life like 3-D reach-out-and-touch view. Anyone else using a stereo microscope at the moment? I'm starting to think that these are the ideal "starter" scopes. ]]> 2010-07-03T21:59:20Z Mintaka Light Microscopes General Discussion Need advice in choosing a microscope http://www.microscopeforums.com/f5/need-advice-choosing-microscope-362.html I need to buy a microscope for clinical use - I am a veterinary oncologist and I look at cytology samples (tissue cells, fluid analysis and bacteria). I have read that Unico microscopes are good and i am trying to decide which model - boy, do I have options! I have looked at the P750 and H607 and around. I would prefer a trinoc because in the future I would like to be able to take pictures of the slides. Any suggestions, experience? I need to buy a microscope for clinical use - I am a veterinary oncologist and I look at cytology samples (tissue cells, fluid analysis and bacteria). I have read that Unico microscopes are good and i am trying to decide which model - boy, do I have options! I have looked at the P750 and H607 and around. I would prefer a trinoc because in the future I would like to be able to take pictures of the slides. Any suggestions, experience? ]]> 2010-07-03T01:46:45Z luminita200 Light Microscopes General Discussion