National Optical 131 Microscope
Save $35 now! This high-power compound microscope is an outstanding educational microscope. It is the same one used in many high schools. This is a student-friendly microscope that's easy to use and provides large, clear images that will meet your needs through high school. It has standard magnification levels of 40x, 100x, and 400x and standard tungsten lighting. National Optical model 131.
Lifetime warranty.
The finish of this microscope is superior to our Home Microscope, but its other features and quality are almost identical. It does not have fluorescent lighting.
Product Specifications
- 10x widefield inclined eyepiece with pointer and 18mm exit pupil distance
- Monocular 45° inclined head with 360° rotation for convenient viewing
- 4x, 10x, and 40x objectives meet DIN standards and are achromatic, parcentered, & parfocaled to prevent color distortion and stay focused when you switch objectives
- Separate fine and coarse focusing with a slip clutch to prevent damage to slides or optics
- Sturdy all-metal rack and pinion focusing
- Large 110 x 120mm stage with clips and stage stop (pre-drilled for adding an optional mechanical stage)
- NA 0.65 condenser and five-hole disc diaphragm to adjust light for best resolution
- 20-watt tungsten illumination
- Field of view is 4.5mm at 40x
- Rugged metal frame, stands 15" tall
- Includes operating instructions and a dust cover
- Replacement light bulb available
- National Optical Model 131
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Lowest Rating - Monday, January 05, 2009
Great Scope!Reviewed By: Denise B I have purchased four of these microscopes (and am about to purchase a fifth) for a biology class for homeschoolers which I have been teaching for three years. This microscope is sturdy, useful, and easy to use for students who are just getting accustomed to microscopes. The three magnification levels are useful for various specimens. It's important for high school biology students to learn to use a microscope, and this is an ideal scope to purchase. We have not had any problems with these microscopes and anticipate using them for years to come. One great, worthwhile addition is to buy the optional mechanical stage, which is easy to attach and makes searching through slides much easier and more precise.
- Tuesday, January 22, 2008
Excellent Homeschool Resource I admit I was hesitant to go through the expense of buying a microscope for homeschool, but after purchasing this, I can see it was well worth the money. Not only is it useful for completing those necessary lab credits, but when homeschool is through, it can be taken to college and used outside the classroom to give that extra edge in those studies as well. This particular model has excellent clarity, ease of use, and additionally, that pesky worry about crushing the slides (like when I was in high school) is eliminated because this model stops itself before that can ever happen. When used in conjunction with HST's pre-made slides, and accessory kit, your child would have everything they needed to not only keep up with public school students, but also surpass them. And in the competitive college acceptance game, every advantage is worth the cost.
- Wednesday, October 10, 2007
Wow! Wow! I have often thought a microscope would be a nice addition to our school equipment, but it seemed a large expense for a minimal use item. I was wrong. This high quality microscope has transformed our science class! Much to my surprise, we use it with every science lesson. Studying the differences between animal and plant cells -- let's take a look. Which of these plant specimens are vascular? Let's prepare some slides and decide. I should have known studying the genuine article would be much more exciting than any picture in our text or online. This is one tool we will be using every year -- I don't know why we waited so long!
- Thursday, January 04, 2007
GREAT MICROSCOPE!!Reviewed By: Melissa Carroll My children love this microscope. I was a little nervous when I first ordered it, because I was afraid it would not be worth the money. I need not worry! It reminded of the type of microscopes we had in school! A great asset for any homeschooler.
- Thursday, January 04, 2007
Great AssetReviewed By: Peg Rounds The Advanced microscope is a great asset for any school and well worth the money! It is easy to use and the clarity on it is like no other! Until we found Home Science Tools and purchased this microscope we had always used ones that never allowed us to see the samples clearly and were hard to get and keep into focus. When we purchased the Advanced Microscope it opened up a whole new interest and world in Science for our son. You can focus on the smallest details and see them clearly and once it's focused it stays in focus. There's no more having to take time out to bring it back to focus. We started using it during the elementary school years and now our son is in junior high and it still works great. It is just as important of a tool in our school as the curriculum itself. It is well worth the money. I would definitely recommend buying this microscope!
Read More Reviews - Thursday, January 04, 2007
Advanced Microscope
Reviewed By: Carol Mcloud
We loved the microscope for earth science through biology. We have used it for my younger son too. It has been an asset for our homeschool far beyond science. We can look at fabrics or anything we are working with, even wood. It is fun to use for any household experiment. This has worked for 3rd Grade through highschool. Thanks again for having such a great product and making it accessible to homeschooled students.
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