CATEGORIES

    RefractoMeter Gauge

    Overview Knowledge Standards Terms
    A refractometer calculates the refractive index of a solution by measuring the angle of refraction when light passes from air into the sample, based on Snell's law. It is used for rapid determination of liquid concentration and monitoring parameters such as sugar content and salinity in the beverage, chemical, and pharmaceutical industries.
    Selection
    When selecting, consider that the measurement range covers the concentration of daily samples, and the accuracy meets process requirements. Handheld models are suitable for on-site rapid testing, while benchtop models are suitable for laboratory use. Pay attention to temperature compensation functionality and the minimum sample volume required, and check whether calibration with distilled water is convenient to obtain.
    style
    Automation
    Parameter
    Temp Control

    Terms

    Online Digital Refractometer
    Abbe Refractometer
    Portable Refractometer
    Abbe Refractometer

    Standards

    Active GB/T 2411-2008
    Plastics and ebonite - Determination of indentation hardness by means of a duronmeter(shore hardness)
    Active GB/T 46020.2-2025
    Plastics—Guide of design for recycling—Part 2:High density polyethylene(PE-HD) materials
    Active GB/T 46020.1-2025
    Design Guidelines for Recyclable and Regenerative Plastics — Part 1: Polyethylene Terephthalate (PET) Materials
    Active GB/T 39693.4-2025
    Rubber, vulcanized or thermoplastic—Determination of hardness—Part 4: Indentation hardness by durometer method (Shore hardness)
    Active GB/T 29617-2013
    Determination of density, relative density,and API gravity of liquids by digital density meter
    Active GB/T 36133-2018
    Refractory materials—Determination of thermal conductivity (Platinum resistance thermometer method)
    Active GB/T 37796-2019
    Insulation refractories—Determination of thermal conductivity（calorimeter）
    Active GB/T 40359-2021
    Timekeeping instruments—Photoluminescent deposits—Test methods and requirements
    Active GB/T 35465.2-2017
    Test method for fatigue properties of polymer matrix composite materials -Part 2: Statistical analysis of linear or linearized stress-life(S-N) and strain-life(ε-N) fatigue data
    Active GB/T 34323-2017
    Carbon black—Determination of light transmittance of water dispersion—Spectrophotometer method
    Active GB/T 26810-2011
    Visible spectrophotometer
    Active GB/T 614-2021
    Chemical reagent—General method for the determination of refractive index
    Active GB/T 5561-2012
    Surface active agents - Determination of viscosity and flow properties using a rotational viscometer
    Active GB/T 27846-2011
    Chemicals - Measurement of viscosity using the Hoppler falling-ball viscometer
    Active GB/T 32683.1-2016
    Plastics—Determination of viscosity using a falling-ball viscometer—Part 1: Inclined-tube method

    Articles

    Use of Fluorescence Spectrophotometer in Measuring Excitation and Emission Spectra of Anti-Counterfeiting Fluorescent Inks
    This article introduces the application of fluorescence spectrophotometry in the spectral measurement of anti-counterfeiting fluorescent inks, including instrument calibration, sample preparation, and methods for measuring excitation and emission spectra.
    Application of High-Temperature Viscometer in Testing the Melt Viscosity Characteristics of Hot Melt Ink
    This article introduces a method for testing the melt viscosity of hot-melt ink using a high-temperature viscometer. The test employs a rotational viscometer to measure the viscosity of three ink samples at different temperatures.
    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.
    Spectrophotometer measures ink spectral reflectance and opacity.
    This article introduces how to measure the hiding power of ink using a spectrophotometer. The instrument irradiates the ink sample, measures its reflectance within the visible light spectrum, and calculates the hiding power using the Kubelka-Munk model.
    Impact of the Fixture Design of a Drop Hammer Impact Tester on the Plastic Impact Strength Results
    This article primarily discusses the impact of the fixture design of a drop-weight impact testing machine on the results of plastic impact strength tests. The geometric parameters of the fixture, clamping method, and contact surface material can alter the stress state and energy transfer of the specimen, thereby affecting the accuracy of the test data.
    Application of Small Push-pull Force Gauge in Rapid Inspection of Adhesive Peel Strength for Mobile Phone Screens
    This article introduces how to quickly test the peel strength of adhesive on phone screens using a small push-pull gauge.
    Cost-performance analysis of single-channel versus multi-channel switching modules when selecting a laboratory ion meter.
    This article compares the cost-effectiveness of single-channel and multi-channel switching modules for laboratory ion meters. Single-channel devices have lower purchase costs, but additional instruments are required for each additional detection parameter. Multi-channel units have higher initial investment, but when testing more than three parameters, the total cost over three years is lower and the sample throughput is greater.
    Shore Durometer Selection: Matching Principles of Hardness Models and Measurement Ranges
    This article introduces the selection method for Shore durometers, with the core focus on ensuring that the hardness type matches the material's hardness range and rebound characteristics. When selecting, the principle that the measured value falls within 20% to 80% of the full scale should be followed to avoid data distortion.
    Turbidity meter selection: Basis for choosing light source type and measurement accuracy.
    This article mainly introduces how to select a turbidity meter based on its light source type and measurement accuracy.
    How to choose a turbidimeter - starting with the measurement principle.
    This article introduces how to select a turbidimeter, starting from the measurement principles. The main principles include the scattered light method, transmitted light method, and scattering-transmission ratio method, each suitable for samples with different concentrations.
    Application of Karl Fischer Micro Moisture Meter in Moisture Control of Lithium Battery Electrolyte
    The Karl Fischer micro-moisture analyzer is based on the Karl Fischer titration principle, which measures trace moisture in lithium battery electrolytes through the quantitative reaction between iodine and water.
    Guide to Selecting a Laboratory Rotational Viscometer for Coatings Development
    This article introduces how to select a laboratory rotational viscometer in coatings research and development. It first explains the principle of rotational viscometers measuring viscosity based on shear resistance, and then points out that key parameters to consider during selection include measurement range, shear rate, temperature control, and rotor configuration.
    High-temperature viscometer evaluates the flow characteristics of ceramic coatings before sintering.
    This article introduces how to use a high-temperature viscometer to evaluate the flow characteristics of ceramic coatings before sintering. During measurement, the instrument detects changes in the viscosity of the coating sample under simulated sintering temperature conditions using rotational or oscillatory principles.
    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.
    Practical Guide to Selecting Rotors and Speeds for Rotational Viscometers
    A rotational viscometer measures viscosity by detecting the resistance encountered by a rotor rotating in the sample. When selecting a rotor, it is necessary to consider the estimated viscosity range of the sample, ensuring that the torque reading falls within 10% to 90% of the instrument's measurement range, while also taking into account the sample volume and rheological properties.