Viscosity Flow Cups ISO

The UNE ISO viscosity cup by NK by NEURTEK allows for quick and precise measurement of the viscosity of paints and coatings, facilitating quality control and process optimization.

The UNE ISO viscosity cup is a simple and reliable tool to perform viscosity testing in paints, inks, varnishes, and other liquids. Knowing the viscosity of your product is key to ensuring optimal performance, avoiding waste, and achieving a uniform finish in every application.

How does a viscosity cup work?

The principle is simple: the UNE ISO viscosity cup measures the time it takes for a fluid to flow through a standardized orifice.

• This time is expressed in seconds and reflects the relative viscosity of the liquid.
• Thicker fluid → longer flow time.
• Serves as a quick reference to adjust the product according to your manufacturing or application needs.

Key concepts: kinematic viscosity

Kinematic viscosity is one of the most relevant metrics when measuring viscosity. It is the ratio between absolute viscosity (μ) and the density (ρ) of a fluid. The formula to calculate it is:

υ=μ/ρ 

And it is measured in units such as:

• m²/s
• Stoke (St)
• Centistoke (cSt)
  (1 m²/s = 10,000 St = 1,000,000 cSt)

Benefits of the UNE ISO viscosity cup

• Precise and reliable viscosity measurement.
• Complies with UNE ISO standard.
• Ideal for quality control in laboratories and production.
• Easy to use and cost-effective, with no complex calibration required.
• Suitable for paints, varnishes, lacquers, and other industrial liquids.

Types of viscosity cups and their applications

While the UNE ISO viscosity cup is the ideal choice for many applications, other types of viscosity cups may be useful depending on your specific needs.

• Ford cup: Perfect for lower-viscosity fluids like inks and coatings.
• DIN cup: Commonly used in the paint and varnish industry for high-shear viscosity measurements.
• Zahn cup: Ideal for low-viscosity liquids and manufacturing processes.

Each cup type adapts to different viscosity measurement requirements, so it is important to choose the one that best fits your needs. The UNE ISO cup is a versatile and widely recognized option, but if you need a specific instrument for certain applications, we can help you find the most suitable viscosity cup.

Frequently Asked Questions (FAQ)

What is a viscosity test?
It is a test that measures a liquid's resistance to flow, determining its relative viscosity using instruments such as viscosity cups.

How is measurement performed with a viscosity cup?

• Fill the cup with the liquid.
• Let it flow through the orifice.
• Measure the time in seconds it takes to empty.
• Interpret the results according to the corresponding scale.