OMAX 40X-2000X Lab LED Binocular Compound Microscope with Double Layer Mechanical Stage and Coaxial Coarse/Fine Focusing Knob

Quede sorprendido, porque es pequeñito, pero luego me alegre, es una verdadera cucada, tiene todo lo necesario para cualquier trabajo rutinario de campo claro, muy buena iluminación LED , sencillo, con condensador ajustable por cremallera, otros de mucho mayor precio , no lo tienen, sistema binocular de funcionamiento perfecto, y óptica en general, como los de primeras marcas, presentación bonita, pintura y mecánica bien. Soy de los pocos que tienen ,microscopio biológico optico de transmisión estereoscópico a grandes aumentos , existen pocos. Si cuando estudiaba hubiera tenido el OMAX me hubiera vuelto loco de contento.

For 139 this microscope does almost every thing your could want and appears to be very good quality. Comes with a 2-pin plug for the light, as mentioned in other reviews, but I had an old shaver\toothbrush plug adapter which it fitted. My Schuko adapter did not fit. I also purchased some rubber eye pieces and I am trying to order a 60x 160 objective to replace the 100x oil objective, hopefully that will work. This flexibility is one of the advantages of getting a 4-objective standardised system. Comes with a plastic dust cover but no hard case, other than the polystyrene packaging. I haven't used the 20x eyepiece as it gives false magnification at the top end and is probably only of use to give 200x in between the 100x and 400x. I debated about paying more for a trinocular scope but at £100 more for very little-used functionality decided against it. The scope came fully assembled but with no usage instructions, so if you are new to these I would recommend viewing some youtube videos to understand the features, e.g. the condenser aperture, and the practical experiments you can do with it. While very much personal taste I like the look of the scope - it looks utilitarian and professional, more like a scientific tool than like a toy, and therefore seems to get a more respectful treatment from my just-started-secondary-school children. Overall I am very happy with the purchase and I hope it will last a long time.

I'm a homebrewer and I was looking for a microscope with which I could count yeast cells and check yeast viability. I didn't want to spend $500+ on a hobby microscope and my husband found this one for me! The image on 400x is great for counting cells with my hemocytometer (which I bought somewhere else) and it's very handy having the 20x eyepieces so that I can get an even better look at the yeast without having to deal with the oil objective lens (which works fine but is a little bit of a hassle to use and clean, BTW the immersion oil is included with the microscope). This is perfect for the nerdy homebrewer like myself. The image is just as good as the microscope used at a local brewpub here (which is a heavy duty college type microscope). Only 2 very minor complaints: First, you have to assemble the microscope (which is simple) by attaching the top eyepiece section to the base but the hole for the thumb screw that you use to screw the two together was poorly drilled (but then it's an inexpensive microscope). Once together it seems fine but the screw does stick out such that you wouldn't want someone using your microscope without knowing that this screw should not be touched. Second, while the instructions downloaded were generally fine, the instructions for interpupillary adjustment (3.3, page 5) read 'hold the left and right eyepiece tubes and slide the tubes in and out' when it should read ' hold eyepiece tubes and move them apart or closer together'. This is a great microscope for homebrewers. Great images for under $200 - well worth the money!! Just don't forget to get a hemocytometer or at the very least some slides and cover glass. So much fun for so little money!!

Lo compré en oferta hace un tiempo (2020) y pensé que no duraría mucho, pero hasta el día de hoy (2023) sigue funcionando y al 100. Los objetivos son de buena calidad e incluso puedes observar bacterias y otros organismos que requieren los objetivos 40x - 100x. Se compara con los que hay en mi Universidad pero a la fracción del precio. Lo único malo fue que el aceite de inmersión se cristalizó muy rápido, entonces tuve que comprar otro al mes que me llegó el microscopio.

Awesome microscope! I made my own darkfield by cutting a piece of clear thick plastic the same size as the green filter a I glued a 10 cent in the center and inserted it in place of the green filter in the filter holder and it works, so I am glad that this microscope has a filter holder. Making these darkfield patch stop filter is easy and fun to do as an experiment. Google "DIY DIC filter" and you will find plenty of references how to make such filter. I have also order some COL filters from ebay and this give the similar effect as with DIC, which give depth to the microorganisms as shown in my attached photo of a Closterium algae taken with the 20x objective and my little DIY DIC filter. The picture was taken through my cellular phone so not a very good one. The M82ES is bright and easy to use. It came well packed and required minimal assembling, which was only to put the base of the eyepiece in place and tighten a little screw, then to insert the eyepieces. Everything else was pre-assembled. I was afraid that the inter-ocular distance of 55 mm was not going to work for me because I am a small person with a small distance between my eyes but it still work (although 53mm would be best) at 55 mm and watching the microscope with a binocular is so much easier on the eyes than with my previous monocular! I will order the eye cups as it will make viewing even easier. The microscope only come with a thin plastic dust cover so I will order the vinyl carrying case to protect it. Although I like this microscope a lot, if I was not on such tight budget I would have bought the Omax M8311 trinocular (363$) instead because not only does it have a dedicated port for a camera, but it is much more upgradable. My only complain with the M82ES is that it does not have a lot of possibility to upgrade. There is a darkfield condenser available but no phase contrast or no Kohler either. For anyone not wishing to have these options in the future, then it's not a big deal, but if you wish to have a microscope that can be upgraded and grown with you, this one is not the best. Also the M8311 has an interocular distance of 48mm to 75mm, which is much better than the 55mm of this microscope. 55mm is ok for most adults but I suspect that kids would have a bit if trouble with this.