Refractometric Density Meter

A refractometer determines the concentration and purity of liquids or transparent solids by measuring changes in the refractive index of light as it passes through a sample. It is used in quality control across industries such as chemical and food production to measure parameters like sugar content and salinity.
Selection
When selecting, consider whether the measurement range matches the sample concentration and whether the precision meets detection requirements. Pay attention to the temperature compensation function to adapt to environmental changes, and choose between portable or benchtop models according to the usage scenario. Verify the calibration method and operational complexity.

Terms

Standards

Articles

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.
Tap density tester evaluates the accumulation characteristics of sprayed powder.
This article introduces how to use a tap density tester to evaluate the packing characteristics of spray powders. The tap density tester simulates vibration to densely pack the powder and measures the mass per unit volume, thereby obtaining the tap density.
Paper Thickness Gauge for Determining Paper Thickness and Apparent Density
This article explains how to measure paper thickness and apparent density using a paper thickness gauge. Thickness refers to the vertical distance between the two sides of paper under standard pressure, while apparent density is calculated by dividing the basis weight by the thickness, reflecting the compactness of the paper.
Usage of Paint Film Solvent Rub Tester in Rapid Detection of Curing Degree
The paint film solvent resistance tester rapidly evaluates the degree of paint film curing by simulating solvent wiping. Its principle is that a fully cured paint film has a high cross-linking density, enabling it to resist solvent dissolution.
The role of a reflection densitometer in controlling printing ink concentration.
The reflection densitometer measures the light reflectance of the ink layer and converts it into a density value, thereby objectively reflecting the thickness and concentration of the ink layer. In printing, it is used to monitor solid density, ensuring stable ink supply, replacing subjective judgment, and enabling data-driven control.
Density Determination: Selection Strategy between Pycnometer Method and Densimeter Method
This article introduces two methods for measuring the density of substances: the pycnometer method and the densimeter method. The pycnometer method calculates density by measuring the mass of a sample of fixed volume. It is suitable for measuring liquids, powders, and small granular solids, offering high precision but slower operation, and requires temperature control.
Application of Solvent Rub Tester in the Coatings Industry
The solvent rub tester is a detection device used to test how many times a coating surface can withstand solvent rubbing without being damaged, thereby evaluating the curing quality, durability, and cross-linking density of the coating.
Application of Laboratory Coating Machines in the Preparation of Lithium Battery Electrodes
As a key device for achieving uniform coating of active material slurries onto current collectors, the application of laboratory coating machines directly influences the areal density consistency, thickness uniformity, and microstructure formation of electrodes, thereby affecting the energy density, cycle life, and safety of batteries.
The Key Role of Apparent Density Meters in Assessing Powder Flowability.
This article discusses how a bulk density tester is used to evaluate the flowability of powders. Powder flowability is crucial in production. The instrument measures the bulk density and tapped density, then calculates the compressibility index and Hausner ratio. These two parameters directly reflect the quality of powder flow.
The combination of bulk density tester and angle of repose tester provides a one-stop solution for powder flowability testing.
This article introduces a method for comprehensively evaluating powder flowability in powder engineering by combining the use of an apparent density tester and an angle of repose tester. Apparent density reflects the packing characteristics of the powder, while the angle of repose indicates its ease of flow.