กล้องจุลทรรศน์ Levenhuk Rainbow 2L สีเหลืองเขียว Lime 69063

• กล้องจุลทรรศน์ที่ใช้ง่าย สะดวก สำหรับวัยประถมและมัธยม พร้อมชุดทดลองเพื่อเริ่มต้นได้ทันที
• ช่วงอัตราขยาย 40-400x สามารถส่องวัตถุได้หลากหลาย ทั้งเหรียญ กระดาษ ก้อนเกลือ ไปจนถึงสิ่งมีชีวิตในน้ำที่มองไม่เห็นด้วยตาเปล่า
• เหมาะสำหรับชีววิทยา - ส่องพืช แมลง ขนสัตว์ สิ่งมีชีวิตขนาดเล็กอื่นๆ 
• มีแหล่งไฟที่ส่องจากด้านบนและด้านล่าง - จึงส่องได้ทั้งวัตถุที่โปร่งแสง (transparent) และทึบแสง (opaque)
• มีช่องติดตั้งเลนส์ขยาย objectives พร้อมกัน 3 อันในช่องหมุน เพื่อความสะดวกในการเปลี่ยนอัตราขยาย
• ระบบ optics มีการเคลือบหลายชั้น เพื่อให้ภาพที่สว่างและคมชัด
• ที่รองตัวอย่างพร้อมคลิปจับ ใช้ยึดตัวอย่างโดยตรงหรือยึดกับแผ่นใส slide ได้
• ใช้ได้ทั้งไฟบ้าน (รวมสายไฟในชุดแล้ว) และถ่านขนาด AA 3 ก้อน
• วัสดุทำด้วยพลาสติกคุณภาพสูง เบาแต่ทนทาน มีให้เลือก 5 สี
• รวมชุดทดลอง Levenhuk K50 Experiment kit (มูลค่า 1490 บาท) พร้อมตัวอย่าง (specimens) ที่หลากหลาย สามารถเริ่มส่องได้ทันที
• รองรับการต่อกล้องดิจิตอล Levenhuk Microscope Digital Camera (ขายแยก) เพื่อบันทึกภาพนิ่งและวีดีโอลงคอมพิวเตอร์ได้
• แบรนคุณภาพจาก USA ; ประกัน 2 ปี

Levenhuk Overview: Rainbow and LabZZ M101 Microscopes series for children and beginners

How plants are structured, why insects can walk on the walls, what paper is made of – with Levenhuk Rainbow 2L Moonstone Microscope your child will be able to find answers to all these and similar questions and touch the secrets of the microworld. The kit includes everything a young explorer might need – ready-to-use slides for instant observations and instruments and literature for creating new microscope slides.

Levenhuk Rainbow 2L series – five eye-catching colors, quality glass optics, ergonomic design, and an excellent accessory kit. With Levenhuk Rainbow 2L Microscope studying will become an adventure! Children will be able to explore the microcosm and conduct truly exciting experiments on their own – much more interesting than just reading abstruse textbooks. A kid will learn many new things about indoor plants and their structure, examine cat hair and learn its difference from human hair, observe a variety of microorganisms living in a drop of aquarium water, and many other exciting things.

Levenhuk Rainbow 2L microscopes produce 40x-400x magnification – just enough for children’s first biological research. Due to the combined (upper and lower) illumination, these microscopes are suitable for viewing transparent, semi-transparent, and opaque objects - the choice of microscope samples is only limited by a young researcher’s imagination! The microscopes feature lightweight, yet reliable bodies made of plastic. Each Levenhuk Rainbow 2L microscope comes with a Levenhuk K50 Experiment Kit.

The range also includes a digital microscope model, which allows for making astonishing images and videos of observed microorganisms.

Optics
The lenses are made of high-quality optical glass, which features a high level of transparency and doesn’t distort the views. To make image quality even better, the optical surfaces are covered with several layers of anti-reflective coating. The microscope comes with three objectives pre-installed in its revolver; with objectives you get magnifications of 40x, 100x and 400x. Just rotate the revolver to choose desired magnification.

Illumination
The microscope is equipped with two built-in LED light sources. Lower illumination is for observing transparent samples like thin slices of plants or aquarium water. Upper illumination comes in handy when you want to observe opaque samples like coins or paper. With both illuminations turned on, the device is also suitable for working with semi-transparent samples. The smooth brightness adjustment is very convenient as you can easily change the level of illumination according to your needs.

Body and power supply
The body is made of quality plastic, which makes the microscope both sturdy and lightweight. With its head inclined at 45° the microscope is very comfortable and easy to use. The microscope can be powered by AC as well as batteries included in the kit.

Stylish and attractive, Levenhuk Rainbow 2L Moonstone Microscope can turn even the most boring biology class into enthralling research. This microscope allows children to find out what things around them are made of, to study insects and plants, see whether yogurt really does contain living organisms, and many other interesting things. Levenhuk Rainbow 2L Moonstone comes with an experiment kit, which means that a young explorer can start using the microscope right away.

High-quality glass optics
All optical elements of the microscope are made of high-quality, highly transparent glass. In order to further increase light transmission, the lenses are covered with multilayer coating–that’s why produced images are so clear, crisp and contrast. The microscope is equipped with three objectives lenses, which allow for 40-400x magnification range. All you need to do to change the magnification is turn the revolving nosepiece.

The ability to observe transparent and non-transparent objects
In order to observe a sample, place it on the microscope’s stage and secure with the two convenient stage clips. If the sample is transparent, for example a thin slice of onion or mosquito wing, you need to turn on the lower illumination. If you want to study some opaque objects – coins, plant leaves or paper – don’t forget to turn on the upper illumination. And if you turn on both upper and lower sources of light, you can also observe semitransparent samples. Illumination brightness is adjustable, so you can easily set the level of illumination that works best for every sample.

Thought-out design
The microscope body is made of lightweight and at the same time sturdy plastic. Due to its small weight, the microscope is easily transportable and can be taken along to school or when visiting friends. The head is inclined at 45° for more comfortable observations. The device can be powered either through an electrical receptacle or by batteries, meaning it can be used not just at home and at school, but also outdoors.

Levenhuk K50 Experiment Kit
The microscope comes with Levenhuk K50 Experiment Kit, which allows you to carry out a number of interesting experiments–for example, you can observe a fly limb and even grow a population of aquarium pets (brine shrimp). The kit includes a colorful user guide with useful recommendations on working with the microscope, valuable tips on preparing microscope slides, and descriptions of the most entertaining experiments.

The kit includes:
Microscope
Objectives: 4x, 10x and 40x
Eyepiece: WF10x
Stage with clips
Diaphragm disk
Condenser
Built-in upper and lower LED illuminations
AC adapter
3 AA batteries
Levenhuk K50 Experiment Kit
User manual 

Levenhuk K50 Experiment Kit includes:
"Attractive Microscope. Scrutinizing the Microcosm" User Guide
Forceps
Hatchery for Artemia (brine shrimp, or sea-monkeys)
Microtome
Flask with yeast
Flask with pitch
Flask with sea salt
Flask with brine shrimp
5 ready-to-use specimens
5 blank slides
Dropper
Dust cover

Specifications:
Head: monocular, inclined 45°
Optics material: optical glass
Magnification, x: 40-400
Eyepiece tube diameter, mm: 23.2
Eyepieces: WF10x
Objectives: 4х, 10х, 40х
Revolving nosepiece: 3 objectives
Stage, mm: 90x90, with clips
Stage moving range, using focusing mechanism, mm: 0-15, vertical
Condenser: NA 0.65
Diaphragm: diaphragm disk (6 apertures)
Focus: coarse
Body material: plastic
Illumination: LED
Brightness adjustment: yes
Power supply: 220 V/50 Hz or 3 AA batteries
Shipping weight: 3.4 lb (1.53 kg)
Package size (LxWxH): 9.1×5.9×14.6 in (23×15×37 cm)

References and Downloads

 User manual: Levenhuk 2L, D2L, 2L PLUS Microscopes (pdf) 726KB

 10 advantages of the new Levenhuk Rainbow series (pdf) 247KB

 High-resolution images (rar) 649304KB

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:

Click here to see Levenhuk Rainbow Microscopes in action

Levenhuk Rainbow Microscopes Comparison Table