Home page

LBT-302DIC Differential Interference Metallurgical Microscope

Name: LBT-302DIC Differential Interference Metallurgical Microscope
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

The LBT-302DIC upright metallurgical microscope is suitable for microscopic observation of opaque specimens.

Category:

Metallographic microscope

Keywords:

E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

Consult

LBT-302DIC Differential Interference Metallurgical Microscope

Description

Product Introduction:

The LBT-302DIC upright metallurgical microscope is designed for microscopic observation of opaque specimens. Featuring a high‑quality infinity‑corrected optical system and a modular functional design, it allows for easy system upgrades to support polarized light and darkfield imaging, among other capabilities. Its compact, stable, and highly rigid body fully addresses the vibration‑isolation requirements of microscopic operations. An ergonomically optimized design ensures convenient, comfortable handling and ample working space. Ideal for examining conductive particles, metallographic structures, and surface morphology, this instrument is a perfect choice for research in metallurgy, mineralogy, and precision engineering.

Product Features:

Observation System:

Hinged Observation Tube: Trinocular, with individual diopter adjustment; the tube is tilted at 30° and features a built-in analyzer, allowing seamless switching between standard and polarized observation, and can be connected to a camera system. Eyepiece: WF10X wide-field plan eyepiece, with a field of view of Φ18 mm, providing a broad, flat viewing area.

Stage:

Equipped with a stage offering a large travel range, dimensions: 250 mm × 230 mm; travel range: 154 mm × 154 mm.

An optional ultra-large stage with a travel range of 280 mm × 270 mm is also available, offering a travel range of 204 mm × 204 mm.

Episcopic illumination system:

It employs a 6 V, 30 W halogen lamp with adjustable brightness, providing clear and vivid microscopic images not only for conventional brightfield observation but also for polarized-light microscopy. Equipped with a built-in polarizer, field diaphragm, and aperture diaphragm, it enables polarized-light observation, allows precise control of the field of view, and facilitates adjustment of field contrast; the center of the field diaphragm is also adjustable. A plug-in filter wheel includes yellow, green, and blue filters as well as frosted glass, offering illumination of varying color temperatures to suit the examination of diverse specimens.

Main body:

The unique T‑shaped mirror‑body frame design enhances instrument stability and maximizes usable workspace. The ultra‑low‑position, front‑mounted coarse‑fine coaxial focusing mechanism helps reduce operator fatigue during extended observation. The coarse adjustment knob features adjustable tension, ensuring a comfortable grip for users of all hand sizes. By controlling the stage’s vertical movement, you can obtain a clear image of the specimen.

Technical Specifications:

Technical Specifications
Eyepiece	Wide-field WF10X (field of view Φ22mm)
Objective lens	LBT-302DIC	LM 5X/0.12 BD Working distance: 12 mm DIC
	(With a DIC objective)	LM 10X/0.25 BD Working distance: 16 mm DIC
		LM 20X/0.40 BD Working distance: 12 mm DIC
		LM 50X Working Distance: 9.15 mm
Eyepiece tube	The trinocular head is tilted at 30°, enabling 100% light transmission for photography.
Epifluorescence illumination system	RH-302DIC	6V 30W halogen lamp, with adjustable brightness 6V 30W
	RH-302BD	12V 50W halogen lamp, with adjustable brightness 12V 50W
	Built-in field diaphragm, aperture diaphragm, color filter changer (yellow, blue, green, frosted glass), and a push‑pull type analyzer and polarizer.

Focusing mechanism	Coarse–fine coaxial focusing, with locking and limit devices, fine‑adjustment scale.
Converter	Five holes (internal ball-bearing internal positioning)
Stage	Mechanical stage, external dimensions: 280 mm × 270 mm, travel range: horizontal (X) 204 mm, vertical (Y) 204 mm.
Stage

Related Product

WSC-300 Microcomputer-Controlled Steel Strand Stress Relaxation Testing Machine

The WSC-300 microcomputer-controlled steel strand stress relaxation testing machine employs servo control technology and computer-based data acquisition and processing, enabling closed-loop control and automated testing. It comprises four main components: the testing frame, the servo control system, the measurement and control system, and the test fixtures. With a maximum test force of 300 kN, the machine achieves an accuracy class better than 0.5.

YLZ-100 Microcomputer-Controlled Electro-Hydraulic Servo Curbstone Flexural Testing Machine

The YLZ-100 concrete curbstone flexural‑compressive testing machine is used to determine the flexural strength and flexural load of linear curbstones with a length of 1000 mm, as well as the compressive strength of curved curbstones and L‑shaped curbstones with a straight cross‑section. In accordance with JC/T 899‑2016 Concrete Curbstones, it can also be employed to conduct experimental studies on the flexural and compressive strengths of other materials.

WDW Dual-Column Microcomputer-Controlled High- and Low-Temperature Electronic Universal Testing Machine (with Video Extensometer)

The microcomputer-controlled high‑ and low‑temperature electronic universal testing machine consists of the testing machine mainframe, fixtures, a high‑ and low‑temperature chamber, and computer software. The temperature chamber is slid into the mainframe; after opening the chamber door, the specimen is secured in the dedicated fixture. The chamber then heats or cools until the specified temperature is reached.

WDW—Dual-Column Microcomputer-Controlled Electronic Universal Tensile Testing Machine (20 kN)

This machine can perform tests such as tensile, compressive, flexural, tear, 90° peel, 180° peel, shear, adhesion, pull-out force, and elongation at break on rubber, plastics, foamed materials, synthetic resins, films, alloy materials, and other non-metallic and metallic materials.

FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

Which materials can be measured by your Vicat softening point tester?

It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Consult

We will contact you within one working day. Please pay attention to your email.