กล้องจุลทรรศน์ Levenhuk 3S NG Microscope พร้อมชุดทดลอง K50 Experiment Kit 66822

• กล้องจุลทรรศน์แบบตาเดียว กำลังขยาย 200x
• วัสดุทำด้วยโลหะ แข็งแรงทนทาน และมีน้ำหนักเพื่อความเสถียรภาพในระหว่างใช้งาน
• เหมาะกับการส่องตัวอย่างที่มีความโปร่งแสง
• ช่องส่องออกแบบเอียงเข้าหาผู้ใช้ เพื่อความสะดวกในการส่อง
• แหล่งแสงส่องจากกระจกแบบ plano concave ขนาด 1.6" ใต้วัตถุ จึงนำออกไปใช้นอกสถานที่ได้ ปลอดภัยสำหรับเด็ก
• มีเลนส์วัตถุแบบ achromat ที่ 16x และเลนส์ตาที่ 12.5x ให้อัตราขยายที่ 200x
• รวมชุดทดลองสำเร็จรูป K50 Experiement Kit ที่มีอุปกรณ์ 18 ชิ้น มูลค่า 1490 บาท พร้อมท่องโลกระดับไมโคร (micro world) ได้ทันที
• แบรนคุณภาพจาก USA ; ประกัน 2 ปี

Levenhuk 3S NG Microscope supplied with the Levenhuk K50 Experiment Kit and detailed user guide is the perfect choice for beginners, children and students. The microscope works in bright field mode allowing you to observe transparent specimens. 200x magnification will allow an amateur researcher to see every interesting detail of an observed object that might be needed for non-professional purposes.

With the Levenhuk 3S NG you can begin your adventures in the world of science right after you take the microscope out of the box, with the included Experiment Kit. This model allows for bright field observations of transparent specimens. This microscope with its 200x magnification is a fantastic doorway into the marvels and mysteries of the microcosm for children, students, and amateurs alike.

The 40-mm (1.6-in) plano-concave mirror in the Levenhuk 3S NG models provides enough light for your observations, which means you can use this microscope without having to plug it in to a power source. This is the easiest and safest illumination method, which means that children can safely use this microscope. The diaphragm disk allows you to control the amount of light required for observations of the specimen.

This monocular microscope has a single 16x achromatic objective lens, which provides a clear view without any chromatic or spherical aberrations. In this model the head is located directly above the stage, but for comfortable observations you can incline both the head and the stage to the desired angle by the arm of the microscope.

The 100x90-mm (3.9x3.5-in) stage is perfect for observations of one or two specimens. To prepare the specimen, first place a sample on the blank slide, then slowly drop a cover slip over the sample. The resulting slide is then placed on the stage and secured in place with stage clips. Use the coarse focusing knob to focus your view by moving the body tube of the microscope up and down (at 20-mm (0.8-in) intervals).

The metal construction makes this microscope both sturdy and stable.

"Attractive Microscope. Scrutinizing the Microcosm" User Guide included in the kit will lead you through a number of biological experiments that you can perform at home. For this, you will use the specimens that are already supplied with the Levenhuk 3S NG Microscope; and in just a few minutes you will be looking into the unknown. You will learn how to prepare the samples, conduct experiments, analyze the results, and, of course, you will learn a lot about the world around you along the way.

The plano-concave mirror provides all the light needed and doesn't require a separate power supply. The plano-concave mirror is the safest type of illumination, so you can entrust this model to the kids. Made of metal, this microscope is reliable and steady, which is another desirable quality when used by children.

16x objective provides quality images without aberrations. The head (as well as the stage) can be inclined to adjust to your position. A coarse focusing system allows you to focus the view and make it sharper.

The kit includes:
- Microscope
- Objective: 16x
- Eyepiece: H12.5x
- Condenser
- Stage with clips
- Plano-concave mirror
- Levenhuk K50 Experiment Kit
- User manual and lifetime warranty

Experiment kit includes:

- "Attractive Microscope. Scrutinizing the Microcosm" User Guide
- Hatchery for Artemia (brine shrimp, or sea-monkeys)
- Forceps
- Flask with brine shrimp
- Microtome—a tool that allows you to make very thin (fraction of a millimeter) slices of samples, which is necessary for studying samples under a microscope
- Flask with yeast
- Flask with sea salt
- Flask with pitch
- Blank glass slides (5 pieces)
- 5 samples: fly's limb, onion, cotton stem, slice of a tree trunk, pine

Specifications:
Magnification, x: 200
Head: monocular
Eyepiece: H12.5x
Objective: 16x achromat
Body type: straight body tube
Stage dimensions, in: 3.9x3.6, with stage clips
Condenser: disk diaphragm
Focus: coarse, 0.8 in
Illumination: 1.6 in plano-concave mirror
Weight: 3.3 lb (1.5 kg)
Package size (LxWxH): 5.5×7.7×14.4 in (14×19.5×36.5 cm)

User Manual: User manual: Levenhuk 2S/3S Biological Microscope 

Looking for something to start your observations with?

Paramecium caudatum is perhaps one of the first protozoans that a young naturalist would explore. These organisms live in fresh standing water. They can also be found in an aquarium, especially if it hasn’t been cleaned for a long time. My ciliate-shoes were taken from the aquarium. Of course, there are only a few ciliate-shoes in aquarium water – the possibility of finding one of them in your microscope’s eyepiece is extremely low. Therefore, we need to increase their concentration. To do so, take a jar (about 17 fluid ounces or 0.5 liters), fill it with aquarium water, put a small spoiled onion and banana peel inside. Put the jar in a warm dark place for 5 to 7 days (don’t close it with a lid).

 

Paramecium caudatum. Animation. Magnification: 64x.

The average size of Paramecium caudatum is 0.02 inches (0.5 mm). For locomotion Paramecium caudatum uses its cilia (about 15 thousand cilia cover its little body!). Moreover, it has two nuclei (a large macronucleus is responsible for nutrition, respiration, metabolism, etc.; and a small micronucleus – for reproduction). Paramecium caudatum feeds on bacteria or algae. The food is caught by an oral groove covered in cilia and then goes to the cell mouth. It is then digested in the digestive vacuole (gullet). Undigested leftovers are ‘thrown out in the open’ through an anal pore (cytoproct). To remove all excess water, our heroine has two contractile vacuoles. They work like pumps on a boat, pumping excess water out of its body. Paramecium caudatum maintains its slipper-like shape thanks to a special membrane (pellicle).

 

Study this image to learn all parts of Paramecium.

Source: https://www.levenhuk.com/reviews/paramecium/

 

Some things you can see under a microscope:

 

 

 

 

More information

You can find a review on this microscope here.
Find answers to frequently asked questions about microscopes here.
Step-by-step guide on how to work with prepared microscope slides.
How does an aperture of a microscope objective lens work? Learn here.
Find a useful review on what a microscope consists of here.
Find reviews on what hair and insects' eyes look like under a microscope here and here.
Find out how to make your own microscope slides here and here.