กล้องจุลทรรศน์ Levenhuk Rainbow 2L PLUS สีเขียวมะนาว Lime 69069

• กล้องจุลทรรศน์ที่ใช้ง่าย สะดวก สำหรับระดับประถมและมัธยม พร้อมชุดทดลองเพื่อเริ่มต้นได้ทันที
• ช่วงอัตราขยาย 64-640x สามารถส่องวัตถุได้หลากหลาย ทั้งเหรียญ กระดาษ ก้อนเกลือ ไปจนถึงสิ่งมีชีวิตในน้ำที่มองไม่เห็นด้วยตาเปล่า
• เหมาะสำหรับชีววิทยา - ส่องพืช แมลง ขนสัตว์ สิ่งมีชีวิตขนาดเล็กอื่นๆ 
• มีแหล่งไฟที่ส่องจากด้านบนและด้านล่าง - จึงส่องได้ทั้งวัตถุที่โปร่งแสง (transparent) และทึบแสง (opaque)
• มีช่องติดตั้งเลนส์ขยาย objectives (4x, 10x, 40xs) พร้อมกัน 3 อันในช่องหมุน เพื่อความสะดวกในการเปลี่ยนอัตราขยาย
• เลนส์ 40xs มีระบบสปริงในตัว (spring load mechanism) ป้องกันความเสียหายถ้าเลนส์มีการชนแผ่น slide บรรจุตัวอย่าง
• ระบบ optics มีการเคลือบหลายชั้น เพื่อให้ภาพที่สว่างและคมชัด
• ที่รองตัวอย่าง (stage) พร้อมคลิปจับ (securing clips) ใช้ยึดตัวอย่างโดยตรงหรือยึดกับแผ่นใส slide ได้
• ใช้ได้ทั้งไฟบ้าน (รวมที่เสียบไฟบ้านในชุดแล้ว) และถ่านขนาด AA 3 ก้อน เหมาะใช้นอกสถานที่ เช่นใน greenhouse ส่วนตัว
• บอดี้ทำด้วยวัสดุโลหะ เพื่อการใช้งานที่ยาวนานหลายปี มีให้เลือก 5 สี
• ช่องมองออกแบบเอียง 45 องศาเพื่อความสะบายในการมอง ไม่ปวดคอ และคอช่องมองสามารถหมุนได้ 360 องศาเพื่อการใช้งานเป็นกลุ่ม
• รวมชุดทดลอง Levenhuk K50 Experiment kit (มูลค่า 1490 บาท) พร้อมตัวอย่าง (specimens) ที่หลากหลาย สามารถเริ่มส่องได้ทันที
• รองรับการต่อกล้องดิจิตอล Levenhuk Microscope Digital Camera (ขายแยก) เพื่อบันทึกภาพนิ่งและวีดีโอลงคอมพิวเตอร์ได้
• แบรนคุณภาพจาก USA ; ประกัน 2 ปี

โปรดทราบ: โดยหลัก คุณสมบัติของ Levenhuk 2L PLUS ที่เพิ่มจาก 2L คือ: บอดี้ทำด้วยโลหะ, อัตราขยายที่สูงขึ้นถึง 640x, Objective มีระบบสปริง, คอช่องมองหมุนได้ 360 องศา 

Levenhuk Rainbow 2L PLUS Microscope Video Review

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

Levenhuk Rainbow 2L PLUS Moonstone Microscope is an ideal choice for children taking biology classes at school, as well as for medical students. With this microscope you can observe specially prepared microscope samples, and also prepare them on your own–explore all the things that surround you in your everyday life. This microscope’s quality optics and wide magnification rangemake it a truly universal tool that can be used for many different tasks. The kit includes everything needed for a beginning biologist.

Bright and stylish Rainbow 2L PLUS microscopes are the logical continuation of the Levenhuk Rainbow 2L series. New microscopes combine all the advantages of the previous line with new, favorable features. These microscopes are equipped with two illumination systems – that means you can observe transparent, semi-transparent, and opaque microscope samples.

Each model comes with a Levenhuk K50 Experiment Kit – this kit will help young researches with their first independent experiments and research. The main difference of the new microscopes is their improved optics. They produce higher magnification power (up to 640x) and can be used for serious research by biology students. All microscopes are equipped with a spring-loaded objective lens – its design prevents any damage, even if the objective touches the slide during the focusing process.

Levenhuk Rainbow 2L PLUS microscopes have reliable metal bodies – they are known for its long service life even when used intensively in colleges or laboratories. And, of course, we should mention their modern design and five bright body colors – one of these beautiful microscopes will look very nice in your child’s room or on your desktop.

The world around us is full of amazing things, but some of them are unfortunately invisible to the human eye. To see all the wonders of the microcosm you will need a good instrument for observations, and Levenhuk Rainbow 2L PLUS Moonstone is just perfect for that! This microscope has a wide range of magnification from 64x to 640x. This instrument allows you to study plants and insects, observe microorganisms, as well as check coins for scratches invisible to the naked eye and many other things. The kit includes everything required for introduction to the Microworld. Levenhuk Rainbow 2L PLUS Moonstone Microscope is a perfect choice for inquisitive pupils and biology students.

Optics
The optics are made of high-quality glass of high transparency that does not distort the images. For even better light transmission, the lenses are coated with multiple layers of anti reflective coating. As a result you can enjoy contrast, sharp, and clear views of observed objects.

The microscope is equipped with three objective lenses: 4x, 10x and 40xs. The most powerful lens (40xs) has a special spring mechanism that protects the optics from mechanical damage during focusing. The spring-loaded objective lens will retract when brought into contact with the coverslip, preventing any scratches or cracks on the optical surfaces.

Illumination
The microscope features two bright LED illuminators. Lower lighting is used for observing microscope specimens in transmitted light – for example, thin slices of plants, microorganisms in aquarium water, and other transparent samples. Upper lighting is used when observing opaque objects. For instance, you can use it for examining paper money, or coins for scuffs and dents. When both illuminators are turned on, you can observe semi-transparent samples. The brightness level can be regulated to achieve the best viewing results with each microscope sample.

Reliability and comfort
The microscope has a reliable metal body and, therefore, can be used in schools and colleges for biology and chemistry lessons. The head is set at an angle of 45 degrees - it allows the most comfortable observing position. The monocular head can be rotated 360 degrees around its axis, which is really convenient for working in a group – you don’t need to move the microscope itself; just turn the microscope head.

Body design and power supply
The durable metal body of the instrument ensures its long service life. The microscope can withstand many years of highly intensive use in schools, colleges, and medical laboratories. The 45-degrees inclined and 360-degrees rotatable head allows for the most convenient use of the instrument. When working in a group, just turn the head in the desired direction instead of moving the whole instrument.

The microscope works on AC power, as well as on batteries – that means you can even use it in places with no power outlets. Illumination works in AC and battery power modes, so you can use it outdoors or in a greenhouse.

Levenhuk K50 Experiment kit
The microscope comes with a Levenhuk K50 Experiment Kit, which contains lots of useful accessories for beginners. The kit includes ready-to-use slides, tools for preparing your own samples (microtome, forceps, and blank slides), and a very helpful user guide with all necessary information about the instrument and experiment descriptions.

The kit includes:
Microscope
Objectives: 4x, 10x and 40xs
Eyepiece: WF16x
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, rotatable 360°, inclined 45°
Optics material: optical glass
Magnification, x: 64–640
Eyepiece tube diameter, mm: 23.2
Eyepieces: WF16x
Objectives: 4х, 10х, 40хs (spring)
Revolving nosepiece: 3 objectives
Stage, mm: 90x90, with clips
Stage moving range, using focusing mechanism, mm: 0–8, vertical
Condenser: NA 0.65
Diaphragm: diaphragm disk (6 apertures)
Focus: coarse
Body material: metal
Illumination: LED
Brightness adjustment: yes
Power supply: 220 V/50 Hz or 3 AA batteries
Shipping weight: 4.1 lb (1.84 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) 512541KB

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