Hardness Test Kit

The durometric rod allows portable and precise measurement of the hardness and wear resistance of coatings, varnishes and plastics on flat or curved surfaces.

The durometric rod, also known as a hardness pencil, is a portable instrument designed to evaluate the hardness and resistance to wear or scratching of coatings, varnishes, plastics and other materials. Its compact design allows quick and precise measurements on both flat and curved surfaces, providing reliable results in laboratories or production environments.

How does the durometric rod work?

The tungsten carbide tip slides over the surface while applying constant pressure. This pressure is adjusted using the included springs or by using a caliper. This system allows adaptation to different types of materials and finishes, ensuring accurate measurements.

Main features

Three springs for different pressure ranges:

• White: 0 to 300 g (10 g graduation).
• Blue: 0 to 1000 g (50 g graduation).
• Red: 0 to 2000 g (100 g graduation).
• Standard 1 mm tip, with 0.75 mm and 0.5 mm options.
• Suitable for measuring on flat and curved surfaces.
• Pen-style design, comfortable and easy to handle.
• Complies with UNE EN ISO 1518 and EN 438-2 standards.

Tip options according to standard

• 0.5 mm according to Opel standard.
• 0.75 mm according to Bosch standard.
• 1 mm according to Volkswagen standard.

Main applications

• Hardness and resistance testing of coatings and varnishes.
• Quality control in automotive and industrial manufacturing.
• Evaluation of plastic coatings and surface protectors.

What does the equipment include?

• Durometric rod with 1 mm tip (Volkswagen standard).
• Three springs to vary pressure.
• Case to protect the equipment.
• Manual in Spanish.

Benefits of use

• Allows portable and fast testing.
• Precision on flat or curved surfaces.
• Adjustable to different materials and standards.
• Improves reproducibility in hardness and resistance testing.

Frequently Asked Questions (FAQ)

What is a durometric rod or hardness pencil?
It is a portable instrument that measures the hardness and wear resistance of coatings, varnishes and plastics using a tungsten carbide tip and controlled pressure.

What types of materials can it be used on?
It is mainly used on coatings, varnishes, plastics and any surface that requires surface hardness control.

What is the difference between the blue, red and yellow springs?
Each spring applies a different pressure range, allowing the measurement to be adapted to the hardness of the material:

• White: 0–300 g
• Blue: 0–1000 g
• Red: 0–2000 g

Can it be used on curved surfaces?
Yes, the durometric rod is designed to measure both flat and curved surfaces while maintaining reliable results.