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The spectrophometer is an instrument that performs a full spectrographic analysis of the color covering the whole wavelength, while verifying the spectral curves and the metamerism.

The spectrophotometer: spectral curves and metamerism

Spectral color curves are graphs that show the amount of light of each wavelength (or frequency) emitted or reflected by an object or light source. In other words, they show how an object or light source transmits or reflects different wavelengths of light of the visible spectrum. They are used in color science to describe the properties of a color and to make comparisons between different colors.

In colorimetry, metamerism is the phenomenon whereby two or more colors appear similar to the naked eye, but actually have different color compositions. This happens because our visual system has difficulty distinguishing between different wavelengths of light, and therefore colors that look similar to us can actually be very chromatically different. This can be a problem in some applications, such as printing, where accurate and consistent colors are important.

Two objects that are equally illuminated, can have the same color under a specific light source, but a different color under another one.

Therefore, two objects of the same color, but produced at different times and with non-identical products, can reflect light in different ways.

Why use spectrophotometers?

That is why the spectrophotometer is ideal, because it uses the principle of spectroscopic combination and separates light according to a certain wavelength range, to acquire and evaluate color data.

Where is it used?

The spectrophotometer is used in a wide range of manufacturing industries.  Here are some examples:

Textiles: to check the color accuracy of fabrics and upholstery.
Cosmetics: to verify the color accuracy of products such as make-up and perfumes.
Food: to verify the color accuracy of products such as coffee.
Household Products: to check the color accuracy of products such as paint and detergents.
Pharmaceutical: to check the color accuracy of pills and capsules.
Advertising Materials: to verify the color accuracy of print and promotional materials.
Construction: to check the color accuracy of products such as paint and concrete.

Product design: to verify the color accuracy of products such as furniture and accessories.

colors pills

Why purchase the SAMA Tools name-brand spectrophotometer?

As we have seen, the spectrophotometer is an advanced tool used to measure and analyze visible light.

It can measure the brightness, color and intensity of light, as well as analyze the spectral characteristics in the different areas of the visible spectrum.

In addition, this instrument is equipped with high-quality color management software, capable of analyzing the collected data and providing detailed information on color composition and it’s characteristics.

samatools

Thanks to this software, the spectrophotometer can be used in many fields, such as dye analysis, pigment production, and fabric production, as well as in food product analysis, printing,  building material manufacturing and skin care products.

 

 

 

 

There are other reasons to purchase the SAMA Tools spectrophotometer:

Quality:  It has been designed using only the highest quality components, ensuring accurate and precise color measurement.

Functionality: The SAMA Tools spectrophotometer offers a wide range of functions, including the possibility of performing color comparisons with reference samples and exporting measurement data via the software.

Easy to use: It has been designed to be easy to use, with an intuitive interface and a user’s guide included with the instrument.

Customer Support: All those who choose SAMA Tools instruments can depend on excellent customer support, with highly trained technicians who are ready to answer any questions or assist with any issues.

Price: It offers excellent value for your money.  Our prices are very competitive compared to other color spectrophotometers on the market.

How does our spectrophotometer work?

If you want to see how our spectrophotometer works, watch our mini tutorial video.

Click on the link to watch the video of this indispensable tool for quality control and color industries.   Don’t miss out.  Click here to watch the video.

Write to sales@samatools.it or call us at +39 0584/392342 – 392453 to speak to one of our experts.

We’re happy to help you choose the best instrument for your needs and answer any questions you may have.

Don’t hesitate to contact us today!

 

Every day, nature surrounds us with a wonderful and perfect palette of colors.

Color characterizes everything around us, from the environment to objects.

The first paintings by man were found in caves located in France and Spain and date back to over 20,000 years ago. We can therefore say that man has been painting and glazing for thousands of years and has therefore developed a profound knowledge of it.

However, let us not presume that the processes relating to paint and its application are predictable or easy to apply.

We often take for granted, how difficult it is to pinpoint the exact shade of color needed to paint objects.

In order to achieve the perfection of colors seen in nature that are pleasing to the eye, well-conducted studies and precise quality control are necessary.

Read on as we dive into this field of color.

colour and paint

Photo by Canva Pro

What is paint?

A simple definition of paint is that it is a substance that consists of a pigment suspended in a liquid or paste form such as oil or water. An interesting characteristic of paint is that it is applied in the form of liquid, but when it dries, it solidifies on the surface.

Although it’s often used to color objects, it’s important to remember that in many cases, paint is also applied to protect the surface from environmental damage.

What are the components of paint?

Modern paints require high-quality raw materials to achieve high-quality results. The main components used to produce paint include:

  • Color pigments.
  • Solvents that facilitate the application of the pigment on the surface.
  • Resins that simplify the drying process.
  • Various additives to improve properties such as contamination protection.
from coulor to paint and coating

Photo by Canva Pro

What are the stages of paint production?

The manufacturing process may vary from one manufacturer to another, but the basic steps are the same, namely:

  1. Premixing the pigments with resin, required solvents, and additives to create an initial paste.
  2. Despite the use of solvents, some pigments are insoluble, so a dispersion step is required. This is done by either grinding the pigments in a mill or by means of a high-speed dispersion tank.
  3. Depending on the type of paint required, the paste is then diluted to the desired viscosity.
  4. Packaging the paint. This step varies from one manufacturer to the other, but the most common method used is canning.

What to say about the production of paint colors?

What we’ve talked about so far is how paint is made, but we haven’t mentioned how colors are achieved.

Generally, it all starts in a laboratory, where experts check the quality of the raw materials and create a specific formula for the color paint they want to produce. Then, the same experts carry out quality control throughout the production process to ensure that the formula has not been altered.

However, one of the most critical steps to guarantee that the desired color is achieved is by carrying out a color matching inspection.

How to get accurate and repeatable colors?

colorimetro sa230Color matching inspection is performed on the final product to ensure that the paint color matches the standard under different constant lighting conditions. This guarantees that the customer is provided with the desired result for their specific application.

There are various ways to compare colors.  For example, a non-destructive testing device like the Professional Colour Difference Meter can be used to measure the color differences between 2 or more samples according to the Lab and Lch colour coordinates.

It has an integrated camera which allows it to be perfectly placed on the measuring area while being clearly viewable on its digital display.

To properly perform the color matching inspection, an experienced observer must make a visual assessment.

The new color is then compared to the standard color, in both thick and thin applications, so that both the bulk tone and the undertone of the color can be assessed. Obviously, a good result is when there is no difference between the new color and the standard one.

Quality control is not only for manufacturers, it’s also for paint suppliers:

The virtuous case of Benjamin Paints.

Case study Benjamin Paints

Photo by Benjamin Paints – Romania

Quality control tests are not only limited to manufacturers.   On the contrary, suppliers can also perform them to ensure product compliance for their customers.

For example, one of our Romanian customers, Benjamin Paints has chosen our SAMA Tools name-brand Color Assessment Cabinet to verify the paint colors they sell.  They found this cabinet to be especially useful during their collaboration with major manufacturers,  like Benjamin Moore from the United States.

In addition, because they offer products and services for interiors, they can benefit from the compact size of the cabinet model they chose, which is convenient to use in both the laboratory and on the production line.

This way, they can offer their customers the exact color they require.

This is why Benjamin Paints is a virtuous example of a paint supplier: This company is extremely attentive to customer satisfaction, which is achieved also thanks to their investment in SAMA Tools state-of-the-art technologies for their quality control.

If you are a paint manufacturer or supplier and you want to improve your quality control, we must get to know each other!

Fill out the form and tell us who you are and what you need.  Our technical department will contact you to discuss it and help you achieve your company goals.