CATEGORIES

    Stereomicroscope

    Overview Knowledge Standards Terms
    A stereomicroscope creates three-dimensional stereoscopic images through a binocular observation system, utilizing two independent optical paths to simulate the parallax of human eyes. It enables the observation of the three-dimensional surface morphology of samples and is used in fields such as electronic component soldering and insect specimen dissection.
    Selection
    Select the working distance based on the sample size, and choose a 10-200x zoom lens according to observation needs. Consider the lighting method: use incident light for opaque samples and transmitted light for transparent samples. Select a straight or inclined barrel structure based on the operational space.
    type
    Method
    Structure
    Number of eyepieces
    magnification
    Light Source
    Imaging
    Objective

    Terms

    Stereomicroscope
    Trinocular Stereo Microscope
    Stereo Fluorescence Microscope
    Monocular microscope
    Polarizing Stereomicroscope
    Phase contrast microscope
    Trinocular Inverted Biological Microscope
    Stereoscopic optical microscope
    Interference Microscope
    Binocular Optical Microscope

    Standards

    Incoming GB/T 46514-2025
    Test method for cathode materials of lithium ion battery—Determination of crystal structure—X-ray diffraction method
    Active JJG 878-2025
    Verification Regulation of Extrusion Plastometers
    Incoming GB/T 21650.1-2026
    Determination of pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption—Part 1: Mercury porosimetry
    Abolish GB/T 2384-2015
    Dyes intermediates—General method for the determination of melting range
    Active GB/T 16582-2008
    Plastics - Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods
    Active GB/T 22295-2008
    Standard test method for color of transparent liquids(Gardner Color Scale)
    Active GB/T 41931-2022
    Plastics/rubber—Polymer dispersions and synthetic rubber latices—Freeze-thaw cycle stability test
    Active GB/T 29617-2013
    Determination of density, relative density,and API gravity of liquids by digital density meter
    Active GB/T 3682.2-2018
    Plastics—Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics—Part 2: Method for materials sensitive to time-temperature history and/or moisture
    Active GB/T 4937.30-2018
    Semiconductor devices—Mechanical and climatic test methods—Part 30: Preconditioning of non-hermetic surface mount devices prior to reliability testing
    Active GB/T 4937.22-2018
    Semiconductor devices—Mechanical and climatic test methods—Part 22: Bond strength
    Active GB/T 4937.21-2018
    Semiconductor devices—Mechanical and climatic test methods—Part 21: Solderability
    Active GB/T 4937.20-2018
    Semiconductor devices—Mechanical and climatic test methods—Part 20: Resistance of plastic encapsulated SMDs to the combined effect of moisture and soldering heat
    Active GB/T 4937.201-2018
    Semiconductor devices—Mechanical and climatic test methods—Part 20-1: Handling, packing, labelling and shipping of surface-mount devices sensitive to the combined effect of moisture and soldering heat
    Active GB/T 4937.19-2018
    Semiconductor devices—Mechanical and climatic test methods—Part 19: Die shear strength

    Articles

    Discussion on the Relationship Between Speed Gradient and Film Thickness in Spin-Coating Film Formation
    Spin coating is a common technique that uses centrifugal force to evenly spread droplets across a substrate to form a thin film. The film thickness is influenced by multiple factors, among which the gradient of spin speed and time is a key parameter. This study, based on fluid mechanics principles and experimental validation, analyzes the quantitative effect of the spin speed gradient on film thickness.
    Stormer viscometer controls the in-can viscosity of latex paint.
    This paper introduces the application of the Stormer viscometer in controlling the paint can viscosity of latex paint. Paint can viscosity affects application performance and user experience, with either too high or too low values causing issues.
    Application of Laboratory Scraper Heating Coating Machine in Hot Melt Adhesive Coating
    This article introduces the application of a laboratory blade heating coating machine in hot melt adhesive coating. It first explains the coating process and principles, including three stages—heat conduction, fluid shear, and surface wetting—as well as the influence of temperature on adhesive viscosity.
    Application of Cone-and-Plate Viscometer in Determining the Rheological Curve of Non-Newtonian Fluids in UV Inks
    This article introduces how a cone-plate viscometer measures the rheological curve of UV ink. UV ink is a non-Newtonian fluid whose viscosity changes with shear rate.
    Lab Mixer Selection - Viscosity Determines Torque
    This article mainly discusses how to select a laboratory mixer based on the viscosity of the material. The higher the viscosity, the greater the torque required. Low-viscosity liquids are suitable for high speed and low torque, while high-viscosity materials require low speed and high torque.
    Application of Transparent Constant Temperature Water Bath in Visualization of Material Thermal Deformation
    The constant temperature water bath provides a stable environment for observing the deformation of materials after heating by maintaining a constant and uniform temperature of the liquid medium.
    Improving Efficiency with Vortex Mixers in Biological Sample Pre-treatment
    This article primarily discusses how vortex mixers enhance the efficiency of biological sample pretreatment. By generating a vortex motion through an electric motor, they enable rapid and uniform mixing of liquids, saving time and delivering better results compared to traditional manual methods.
    Handheld viscosity cups are used for rapid assessment of paint viscosity at construction sites.
    A handheld viscosity cup is a portable tool used to quickly assess the viscosity of coatings at construction sites. It operates based on the flow-out time method, calculating viscosity by measuring the time it takes for the coating to flow out of the cup's orifice. It is suitable for Newtonian or approximately Newtonian fluids.
    Application of Desktop Viscometer Cups in Batch Sample Screening at Quality Inspection Centers
    This article introduces the application of desktop viscosity cups in batch sample screening at quality inspection centers. Viscosity cups estimate viscosity by measuring the outflow time of fluids, making them suitable for rapid screening.
    Halogen Moisture Analyzer for Rapid Determination of Solid Content in Water-Based Coatings
    This article introduces a method for rapidly measuring the solid content of water-based coatings using a halogen moisture analyzer.
    Abbe refractometer measures the relationship between refractive index and concentration of liquid coating resins.
    This article introduces the method of measuring the refractive index of liquid coating resins using an Abbe refractometer and calculating the concentration based on the relationship between refractive index and concentration.
    Rotational rheometer measures the viscosity and processing performance of polymer melts.
    A rotational rheometer applies a controlled shear field to measure rheological parameters such as the viscosity of polymer melts. The melt typically exhibits shear-thinning behavior, where its viscosity changes with the shear rate, directly affecting processing methods such as extrusion and injection molding.
    UV spectrophotometer for measuring residual monomers in polymer solutions.
    This article introduces a method for determining residual monomers in polymer solutions using ultraviolet spectrophotometry. The principle relies on the characteristic absorption of monomers in the ultraviolet region, calculating their content based on the relationship between absorbance and concentration.
    Melt flow index instrument controls the flowability and stability of polypropylene injection molding process.
    This article explores how to assess and regulate the stability of polypropylene's flowability in injection molding processes by measuring its melt flow rate. It explains the principles behind characterizing flowability and analyzes the impact of factors such as material batch variations and process parameters on stability.
    Negative pressure method leak detector for testing vacuum packaging seal integrity
    The negative pressure leak detector evaluates the seal integrity of vacuum packaging by simulating a pressure differential environment. The instrument places the sample in a testing chamber and creates a vacuum to form negative pressure. If there is a leak, air or liquid will seep into the packaging, and the result is determined by observing pressure changes or the presence of bubbles.