Power supply in the scope broke after about an hour total use. Bought 2 new 5v cables to try. Lamp cannot be raplaced

Para muchas observaciones se requiere luz incidente la cual no tiene

Estoy muy contento con la compra de éste microscopio, muy buena calidad a buen precio

El microscopio me llegó en excelente estado, la óptica es buena, tiene corrección de aberración plana pero no corrige la aberración cromática de la mejor manera (en la periferia del campo podrían distorsionarse los colores, aunque es mínimo). En general estuve muy satisfecho con el producto y funcionó bien por un par de meses; no obstante a los tres meses la fuente de luz dejó de funcionar. Escribí a Amazon y no me hicieron válida la garantía porque solo era de un mes, así que escribí directamente a OMAX y me dijeron que sí tenía garantía con ellos, pero que debía enviar el microscopio a California (yo vivo en la CDMX)! Al final un técnico en mi universidad lo reparó, pero fue difícil encontrar los mismos circuitos, por lo que tuvo que usar uno diferente. No sé si alguien haya tenido un problema similar, en relación calidad/precio es un buen producto, pero corres el riesgo de que al ser una marca poco reconocida, tengas problemas como estos.

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.

Sobrepaso mis expectativas, muy bueno, compramos varias piezas pues son para una escuela, todos nos llegaron en excelentes condiciones.Algunos no les entra bien el cable alimentador de corriente, pero si funcionan correctamente.Muy recomendable para un regalo y despertar la curiosidad en los jóvenes.

No se pudo cargar el contenido.

Lo compre en 2021, es muy compacto, respecto a los materiales muy pocas partes son de plástico, la óptica está bien para ser de un microscopio de menos de 300 dólares. Una queja que veo entre los usuarios es la ausencia de un instructivo, pero este se puede descargar del sitio oficial. Es una opción económica para aficionados, técnicos laboratoristas o profesionales de ciencias biológicas o de la salud. Con este microscopio se puede observar prácticamente de todo, lo he usado para observar Bacterias, Hongos, Protozoarios etc. El único inconveniente que tengo es el desconocer dónde puedo conseguir refacciones en caso de que termine la vida útil del LED.Adjunto fotografías de algunas observaciones de 𝘈𝘴𝘱𝘦𝘳𝘨𝘪𝘭𝘭𝘶𝘴 spp. teñido con azul de lactofenol a 40x y 𝘗𝘢𝘳𝘢𝘮𝘦𝘤𝘪𝘶𝘮 spp. a 40x.

Buen producto, útil para el laboratorio. Su óptica es adecuada. Los materiales son de buena calidad, se ve resistente para el uso diario. Cuenta con 2 objetivos para aumento en le tamaño de las imagenes. Su fuente de iluminación, es adeucuada.

Un microscopio bastante similar a los usados en el laboratorio en la universidad, lo compré por que quiero aprender mas sobre microbiologia, no se dejen engañar por el precio bastante accesible es un microscopio firme y de calidad, me agrada que venga con filtro verde para el portafiltros y aceite de inmersión se agradece, anexo una fotografía de esporas de hongos vistas con el micro.

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 shavertoothbrush 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.

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.

First: the highest magnification objective lens is oil immersion only. You must put a drop of oil on your slide cover and then lower the lens into the oil to focus on anything. You must NOT do that with the other three lenses.This is what allows the 2000x mag: light goes through oil instead of unsteady air. It's a fantastic feature at this price. Don't worry though, you can be happy just using the other 3 lenses, which is what I plan on using mostly.**If you didn't know what oil immersion objective meant-know is the time to research 'microscopy techniques' along with 'microscope slide preparation' and 'cell staining' techniques and 'dark field' vs 'light field'-- illumination'. Basically: this is a 'real' microscope, and you should learn how to operate it in the proper manner to use it at its fullest. With that said, except for the 4th lens they throw in (oil immersion) a little kid could easily figure out all the features. There is supposed to be a slip of paper with address to download a manual-but I didn't see it. There are tons of omax videos on you tube if you need help.I chose the LED light because: they run cold so it won't kill live pond cells like a hot halogen would. They also last longer.So, how is this scope? Well it's better than what I used in high school and Chem I in university. It's way better than my 4 cheapie Tasco-style garage sale scopes and my homemade macrobellow system.Assembly was easy: loosen knob at top to remove top cover. Remove clear cap on underside of head unit. Place head unit on top of scope and re-tighten knob. Pop in the eyepieces: my 20x were **really** tight and hard to install, but it's 40 degrees here and the metal holes that they fit into may have contracted a bit. Just be patient and they'll go in. That's it!! Oh, and plug it in for light.The objectives are parfocal, meaning when you switch between them you only have refocus using the fine-focus knobs a little. Great feature which makes using it even more of a pleasure. There is a dimmer switch for the LED, and also a diaphragm under the stage-which was half closed when shipped: slide it open for even more light. Again, if you don't know what these terms mean you should start researching 'how to use a microscope'.Optics appear flat and focused edge-to-edge, which is the opposite of many telescope mirrors I deal with~but that's another story. Each eyepiece spins for diopter adjustment, and the eyepieces slide apart for interpuppillary adjustment. Focus with one eye closed using the focus knobs, then switch eyes and focus that eye buy turning that eyepiece itself. Now open both eyes: both will be focused but you'll have double vision: slide the eyepieces further and closer apart. At some point the double vision goes away and in a snap you get a very wide-field view: a single view. It a little like those 'magic eye' optical illusion posters: once you get it-you get it. But it might take a few minutes of fiddling.Delivery: I just joined amazon prime as a guest and this was the first thing I bought. It arrived (to Detroit) in less than 48 hours. It came with all the accessories listed and a nice cover too. It comes with a green filter in case you get chromatic flaring: but that's why the scope doesn't cost **literally** 15x more (at a minimum).I love this microscope, and wished I had bought it earlier. A hearty 5 stars!!!