40X-2000X Doctor Medical Office Vet Laboratory Biological Binocular Compound Microscope with Full-Size 3D Double Layer Mechanical Stage

Para el uso que yo lo quiero esta bien el microscopio. Me llego con 3 filtros de diferentes colores, no traía aceite de inmersión, tiene buena iluminación pero he notado que en ocasiones se baja un poco la intensidad de luz. Al encenderlo y durante el uso se escucha como un zumbidito. La relación calidad-precio me parece justa. Los fabricantes nunca me contestaron para mi factura. En general y para uso personal, me parece una buena compra ya que cumple con el objetivo. Lo recomiendo siempre y cuando no sea para uso laboral intenso. Las fotografías que agregué son tomadas con el objetivo de 40X, 10X y 4X.

I have used various light microscopes in academic and research settings for 45 years. Now that I am retired, I needed a low cost microscope to quantitate parasite eggs in goat feces at about 100x magnification. A $55 toy microscope might work well enough for this but I did not think that I would be satisfied with that and I might want to examine animalcules at higher magnification for entertainment. The Amscope B490B microscope appears to be a good compromise for the factors of cost, optical quality, and mechanical stability for a microscope. Specifically, the packaging was secure, the components were clean, and microscope assembly was easy. There were no missing parts. It had a plastic dust cover, an extra illuminator bulb, a spare fuse, and some immersion oil. All components (coarse focus, fine focus, stage transit, objective turret rotation, etc., worked smoothly. The microscope body appears to be well built with fairly close tolerances (except, perhaps, for the slightly loose oculars). The microscope illuminator was centered and the illumination was intense (and adjustable). The objectives are reasonably parfocal. Image quality is good, especially for the price (compared to a $10 research grade light microscope system. The manual was written with some strange phrases and terms but the content was adequate for me. The attached image was recorded with an hand held iPhone from the B490B LM eyepiece.

I have a BSc in Bio/Zoo but have never actually worked in that field but retain fondest memories of my microscope work (Cell Biology, Microbiology, etc) including some summer-break field stints as a Limnology student. Still, my passion for Bio/Zoo has never really diminished. As I move into retirement, I wanted to pick up a scope to resume my interest in aquatic invertibrates. I looked at some great used scopes but chose this one because of its price and I free shipping (Canada). I have only had the scope for a couple of days but have already put in about 5-6 hours of observing (mostly old slides I made back in '78, my own blood, and some pond water.) So far, I have REALLY ENJOYED this unit. Everything works as described. The objectives are achromatic but this is just fine for me, it was only really noticable when I was viewing some live Euglena at 1000X. The only concern I had is that the 100X objective is not marked "oil"...I have since confirmed with Amscope Customer Service that it is, in fact, an oil lens. I hope this is useful...I would buy this scope again.

My 13 year old daughter is thoroughly enjoying this microscope. It works well.

Tiene una buena imagen, una adecuada iluminación, el costo y calidad son buenos. Llego antes de lo esperado.