ZAHN Viscosity Cup for Varnish

The ZAHN viscosity cup for varnish reflects viscosity by measuring the time it takes for the fluid to completely flow out from a small hole at the bottom of the cup. After the cup body is immersed in the sample and lifted, the time for the cup to empty is recorded; the longer the time, the higher the viscosity. It is used for on-site rapid viscosity control of coatings, inks, and similar materials.
Selection
When selecting, consider the viscosity range of the material being tested. For conventional coatings, choose a No. 2 or No. 3 cup. For high-viscosity materials, use a No. 4 or No. 5 cup. The size of the cup orifice affects the measurement time, which should ideally be controlled between 20 and 80 seconds. Stainless steel material is resistant to solvent corrosion. Regular calibration is required to account for orifice wear.

Terms

Standards

Instruments

Measurement range 400-1800cSt, equipped with 44ml Cup volume, correction factor 0.95-1, accurate viscosity test at 25 ℃ thermostatic environment.

$ 131.00

Portable design is easy to operate, volume 44ml, pore size 1.93mm, viscosity measurement range 5~ 60cst, outflow time 35~ 80s, suitable for rapid viscosity detection in the workshop.

$ 138.00

Filter diaMeter 2mm, viscosity measurement range up to 60cst, flow time 35-80 seconds, stainless steel durable and easy to clean, in line with international standards to ensure Measurement accuracy

$ 521.00

Filter diaMeter 4.3mm, viscosity measurement range 200-1200cst, stainless steel corrosion resistance, in line with international standards design, can quickly assess the liquid viscosity conformity.

$ 483.00

Immersion design, 2mm outflow aperture, viscosity measurement range 5~ 60cSt, stainless steel material, ASTM D4212 standard, correction factor 0.95~ 1.05.

$ 135.00

Aperture 4.26mm, viscosity measurement range 200~ 1200cSt, stainless steel corrosion resistance, portable immersion design for easy operation, correction factor 0.95~ 1.05 to ensure accuracy.

$ 131.00

Made of stainless steel, aperture 3.76mm, Measurement range 100~ 800cSt, correction factor 0.95~ 1.05, in line with ASTM D4212 standard, suitable for Newton type liquid viscosity test.

$ 131.00

1-8Mm pore diaMeter stainless steel filter can be replaced to meet different viscosity range tests; Cup mouth annular groove design can store overflowing liquid; Cup body is made of titanium anodic oxidation aluminum material, durable and easy to clean.

$ 422.00

Aperture 4.26mm, viscosity range 200-1200cSt, outflow time 20-80 seconds, in line with ASTM standard design, can quickly determine the Newton type liquid viscosity, suitable for a variety of viscosity test scenarios.

$ 115.00

Made of stainless steel, with a flow hole diaMeter of 2.74mm and a capacity of 44ml, it can accurately measure liquids in the viscosity range of 20-250cSt at 25 +/- 0.2 ℃ Ambient Temperature.

$ 131.00

The 1mm-8mm pore size filter can be replaced to meet the viscosity range test of 96~ 683cSt; the annular groove of the Cup mouth is designed to store overflowing liquids, and the Cup body is easy to clean without sinkage. It is equipped with a stainless steel filter positioner.

$ 403.00

Adopting a double-sided design, the front supports No. 4 Cup and No. 2 Zahn Cup conversion, and the back supports ISO3-6, No. 3 Zahn Cup and Gardner Viscometer conversion, covering ISO2431, ASTM D4212 and other standards.

$ 256.00

Made of stainless steel to ensure durability, the 2.7mm filter diaMeter is suitable for the viscosity range of 20-250cst, and the outflow time is controlled at 20-80 seconds. It is designed to meet ASTM standards to ensure measurement accuracy.

$ 478.00

6Mm diaMeter outflow hole design, stainless steel material durable anti-corrosion, can be freely replaced with filter holder, expand the scope of application of viscosity Cup test, to meet different viscosity measurement needs.

$ 150.00

Using stainless steel material, filter diaMeter 3.8mm, viscosity measurement range 100-800cst, outflow time 20-80 seconds, suitable for medium viscosity fluid rapid test.

$ 478.00

Articles

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.