Varnish ColoriMeter

Varnish colorimeters measure the tristimulus values of reflected light from the coating surface to calculate color differences compared to standard samples. They are used to monitor the color consistency of varnish coatings, preventing batch color variations in automotive refinish paints and furniture topcoat inspections.
Selection
When selecting, focus on matching the measurement aperture to the sample curvature, and consider the inclusion of specular reflection exclusion mode. It should support common color spaces for varnishes, be portable for on-site comparisons, and offer more stable repeatability in benchtop models.

Terms

Standards

Instruments

Adapted to NS series ColoriMeter, it can measure liquid, sauce and powder samples, realize color data collection of various forms of materials, and expand the application range of the instrument.

$ 557.00

Made of stainless steel, the range is 10~ 100μm, Division 10μm, Dimension 65 * 36 * 1.5mm, suitable for Paints, varnish and other Coating Coating thickness measurement.

$ 119.00

Equipped with 18 standard color scale solution, prepared according to GB/T1722-92 standard, using an inner diaMeter of 10.75mm Glass testtube, Color comparison is carried out in the Color Assessment Cabinet to ensure accurate measurement results.

$ 136.00

Using D/8 lighting system, Inter-instrument Agreement Delta E * 00 < 0.2, equipped with non-contact automatic whiteboard calibration technology to ensure measurement accuracy, lithium battery supports 12,000 consecutive tests.

$ 202.00

It has a multi-function smart button design, supports more than 30 Color indicators and 28 kinds of observation Illuminants, adopts non-contact automatic whiteboard calibration technology, Inter-instrument Agreement Delta E * 00 is less than 0.2, high measurement Stability, portable and lightweight only 88 grams.

$ 267.00

Adopt internationally recognized LOVIBOND color scale, measurement range red 0.1-79, yellow 0.1-79, blue 0.1-49 LOVIBOND units, minimum indication 0.1, equipped with three specifications Cuvette to meet multi-sample testing needs.

$ 677.00

Repeatability and accuracy are ensured with dual optical path sensing arrays and UV reinforced silicon photodiodes with 0.0001 resolution, 0-200% Transmittance Measurement range and support for APHA/PtCo, Gardner and Saybolt chroma scales.

$ 1687.00

Equipped with a 3.5-inch touchscreen, with repeatability of △E*ab ≤ 0.03, measurement accuracy of 0.01, built-in multiple electronic color cards, supports various color difference formulas and color spaces, facilitating quick color matching and comparison.

$ 231.00

1000 wire precision blazing grating and silicon Photocell, photovoltaic cell array, Optical inspection resolution less than 10nm, can simultaneously measure SCI/SCE Light spectrum, Inter-instrument Agreement Delta E * ab < 0.15, equipped with camera positioning and stabilizer platform.

$ 4398.00

1000 wire precision blazing grating and silicon Photocell, photovoltaic cell array, Optical inspection resolution less than 10nm, can simultaneously measure SCI/SCE Light spectrum, Repeatability Delta E * ab within 0.03, support dual aperture switching and camera positioning.

$ 6012.00

Featuring a 3.5-inch touchscreen for easy operation, it offers a measurement accuracy of 0.01 and a repeatability of ΔE*ab ≤ 0.03. Equipped with multiple built-in color cards for fast matching, it supports various color difference formulas and cloud-based data sharing.

$ 231.00

Fully automatic one-click measurement of a variety of whiteness paraMeters, support chromaticity coordinates ≤ 0.001 High Accuracy, built-in thermal printer and RS232 interface, suitable for powder, paper and other samples.

$ 1818.00

With camera view function to prevent measurement deviation, Repeatability Delta E * ab 0.05, Support SCI and SCE dual Measurement mode, store 20000 data, suitable for a variety of environment operation.

$ 3543.00

With camera viewing function to prevent measurement deviation; Repeatability Standard Deviation Delta E * ab within 0.05; dual measurement diaMeter 4mm and 6mm optional; Support SCI and SCE simultaneous measurement, Storage capacity up to 20,000 data.

$ 3543.00

Utilizing a full-spectrum LED light source and a spectral sensor with a wavelength range of 400-700nm, it is equipped with a 3.5-inch capacitive touch screen, built-in multiple color cards, achieving a color card matching accuracy of over 90%, and capable of measuring various color parameters.

$ 651.00

Articles

Colorimeter controls batch color difference in plastic and rubber films.
This article primarily discusses how to use a colorimeter to control color differences in the production of plastic and rubber films. It explains the working principle of the colorimeter, which involves converting colors into numerical values represented by L, a, and b values, and then calculating the color difference.
Colorimeter evaluates the change in yellowing index of transparent resin.
This article introduces how to use a colorimeter to measure the yellowing index changes in transparent resin. Transparent resin can turn yellow over time or due to environmental influences, and the yellowing index can quantify the degree of color change.
Drop Ball Method of Impact Testing Machine for Evaluating the Impact Resistance of Varnish
This article introduces the use of the falling ball method with an impact testing machine to assess the impact resistance of varnish. The method involves dropping a steel ball of specified weight from a predetermined height onto a test panel coated with varnish to observe whether the coating cracks or peels off, thereby evaluating its impact resistance.
Wet film thickness gauge measures the wet film thickness of varnish.
The wet film thickness gauge is a mechanical tool used to measure the thickness of liquid varnish coatings. It operates by rolling the gauge so that the tips of its teeth contact the substrate and leave marks. The thickness value is then obtained by the operator reading the scale of the first tooth that becomes coated with the varnish.
Method for determining the dynamic viscosity of varnish using a falling ball viscometer
This article introduces a method for measuring the dynamic viscosity of varnish using a falling-ball viscometer. It is based on Stokes' law, which calculates viscosity by measuring the time required for a standard small ball to fall a fixed distance in a vertical glass tube filled with varnish.
Muffle Furnace Ash Test Method for Determination of Inorganic Filler Residues in Varnish
This article introduces the method of using the muffle furnace ash test to determine the residual amount of inorganic fillers in varnish. The inorganic substances in varnish can affect the performance of the coating, making accurate determination of ash content important for quality control.
Pull-off Adhesion Tester for Quantitative Measurement of Varnish Adhesion.
The pull-off adhesion tester quantitatively measures the adhesion strength between a varnish coating and the substrate by vertically pulling off a test column. It is essential to ensure proper substrate preparation, complete curing of the coating, and the use of a suitable adhesive during testing.
Buchholz indentation tester measures the indentation hardness of varnish.
The Buchholz indentation test is a method for measuring the indentation hardness of coatings such as varnishes. It involves applying a specific indenter to the coating surface under a standard load, and after unloading, the length of the residual indentation is measured. A longer length indicates lower hardness.
Visual color comparison method using colorimetric tubes to determine the color phase of varnish.
Colorimetric tube visual colorimetry is a method used to determine the color hue tendency of varnish samples by directly comparing them with a standard color scale using the human eye. During operation, samples and standard liquid columns should be prepared using colorimetric tubes of consistent specifications under standard lighting conditions, and the hue differences should be observed in parallel.
Flash point tester for determination of closed cup flash point of varnish
This article introduces the method for determining the closed-cup flash point of varnish using a flash point tester. The flash point refers to the minimum temperature at which the vapor on the surface of the varnish ignites momentarily when exposed to a flame after heating. It is a crucial indicator for assessing the fire risk during its production, storage, and transportation.
Thermogravimetric Analyzer for Determining the Solid Content of Varnish
The principle of determining the solid content of varnish using a thermogravimetric analyzer is as follows: when the sample is heated, volatile solvents and moisture evaporate, leading to a decrease in mass, while the remaining solid mass stabilizes. The solid content is calculated by comparing the initial and final mass ratios.
Adhesion Tester Pull-Off Method for Determining Adhesion Strength of Varnish
This article introduces the test method for measuring the adhesion strength of varnish using the pull-off method. It involves adhering test cylinders to the coating and substrate with adhesive, then vertically pulling them apart with an instrument to record the maximum pulling force and calculate the adhesion strength.
Key steps for measuring the efflux time of varnish using a viscosity cup method
This article introduces the method for measuring the outflow time of varnish using a viscosity cup. The principle is based on Poiseuille's law, where viscosity is estimated by recording the time it takes for the liquid to completely flow out from the small hole at the bottom of the cup—longer times typically indicate higher viscosity.
Application of Gloss Meter in Gloss Measurement of Varnish Coatings
A gloss meter is used to measure the gloss of varnish coatings by detecting surface-reflected light to quantitatively assess the appearance of the coating. The measurement is based on the principle of specular reflection of light, commonly employing angles such as 20°, 60°, and 85° to correspond to different gloss ranges, and follows standard formulas for calculation.
The pendulum hardness tester tests the scratch resistance limit of varnish.
The pendulum hardness tester measures the hardness of varnish by observing the attenuation of the pendulum's swing on the coating surface, with faster attenuation indicating a softer coating. The scratch resistance of varnish depends not only on hardness but also on elasticity and toughness. Hardness testing sets the basic threshold for scratch resistance.