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"Best Practices for Measuring the Color of Transparent Plastic Film"

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"Best Practices for Measuring the Color of Safflower Oil"

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"Best Practices for Measuring the Color of Plastic Pellets"

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"Best Practices for Measuring the Color of Opaque Sheet Plastic"

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"6 Common Color Measurement Mistakes"

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"Using Spectrophotometers to Meet the Color Standard for Canned Tomatoes"

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"Measuring the Color of Chocolate Sweetens Appeal in a Changing Market"

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Best Practices for Measuring the Color of Transparent Plastic Film

Posted on Jan 28, 2026 by HunterLab

The color of a transparent film plays an essential role in its appearance and, in most cases, its functionality. Color measurement can ensure accurate and consistent transparency of plastic film. Let's explore some of the best practices for measuring the color of transparent film.

The Importance of Color Measurement for Transparent Plastic Film 

Transparent plastic film has many applications, from packaging food and beverages to protecting cell phone screens. In these applications, the plastic film's appearance directly impacts the product's quality and how customers perceive it. 

For instance, a customer would choose a clear screen protector instead of a cloudy one because cloudiness affects visibility. Because of this, achieving a consistent level of transparency and clarity with every batch is crucial. Measuring the color of plastic film allows you to monitor variables such as visibility, clarity, and haze where transparency is concerned.

Posted in Color In Plastics

Best Practices for Measuring the Color of Safflower Oil

Posted on Jan 28, 2026 by HunterLab

Safflower oil's versatility brings value to many businesses and consumers. In cooking, it's a viable substitute for frying in vegetable oils since it has a high smoke point. Cosmetics manufacturers prize it for its skin friendliness, while artists prefer it over linseed oil for paint blending.

Consistent color helps ensure the product meets flavor, quality, and safety expectations, underscoring the need for accurate color measurement of safflower oil at every processing stage.

What Impacts Safflower Oil Color?

Factors ranging from natural raw material differences to changes in processing and storage can all impact safflower oil color:

  • Seed coat and petals: A safflower's seed coat and petal color can alter the color of metabolites and linoleic acid, producing color variations in the oil.
  • Roasting temperatures: As temperatures rise during roasting, seed color can transform from pale yellow to golden to a deeper brown.
  • Storage: The oil can undergo substantial changes in storage if subject to lighting and air quality differences. For example, extended and excess light or UV ray exposure can bleach safflower oil.

Posted in Food

Best Practices for Measuring the Color of Plastic Pellets

Posted on Jan 28, 2026 by HunterLab

Best Practices for Measuring the Color of Plastic Pellets

Determining the color of plastic pellets can be challenging when you only rely on visual inspection. Whether the pellets are transparent or opaque, subtle changes in color can be easy to miss. You need to develop an effective color measurement system and use advanced tools to ensure consistent and precise results with each batch. Explore some of our best practices for measuring the color of plastic pellets. 

Measure Plastic Pellets According to Industry Standards

ASTM provides testing standards for the color determination of plastic pellets. The standard outlines testing methods for the degree of yellowness in transparent and opaque pellets.

Adhering to industry standards during the measuring process is essential for adapting uniform procedures and ensuring quality control. 

Accurately Assess the Degree of Yellowness 

Plastic resin or Polyethylene Terephthalate (PET) can turn yellow over time due to oxidation, making it critical to assess the degree of yellowness to ascertain the amount of optical brighteners needed to mitigate it. Optical brighteners are used in plastic production to mask the yellow appearance and make the plastics look clear or bright.

Optical brighteners are also used when restoring recycled Polyethylene Terephthalate (rPET). As governing and standard bodies push for the use of recycled plastic resin, using a spectrophotometer can help determine the color of plastics as they move throughout the supply chain and counter the yellowing effect. Additionally, counteracting the yellowing effect can minimize product waste and revenue loss. 

Posted in Plastic

Best Practices for Measuring the Color of Opaque Sheet Plastic

Posted on Jan 28, 2026 by HunterLab

Consistent color is crucial for plastic products since it impacts brand identity and marketability. Plastic's appearance is based on opacity, texture, and gloss. Every modern manufacturer of opaque sheet plastic must always deliver the correct color to consumers. 

HunterLab's color measurement solutions help execute quality control throughout manufacturing processes. 

Factors that Affect the Appearance of Color

Environmental factors, optical illusions, and surface conditions determine the appearance of an object's color. Other factors include:

  • Subjectivity: Eye sensitivity varies from person to person, causing color to appear different.
  • Light sources: Different types of light, such as fluorescent, incandescent, and sunlight, have different effects on the appearance of color.
  • Surfaces: Surface conditions such as texture and glossiness influence the object's color.
  • Background: An object can appear a different color against a bright or dark background.
  • Surface area: A color covering a large surface area appears brighter and more vivid than when covering a small object.

Spectrophotometers for the Color Measurement of Opaque Sheet Plastic

HunterLab offers instruments suited for color measurement of opaque plastics. Our Agera spectrophotometer caters to opaque plastics like films, sheets, enclosures, and pellets. It measures color across a spectrum with UV control. Additionally, it incorporates a 60-degree gloss measurement and a 5-megapixel camera to assist with sample positioning.

Posted in Plastic

6 Common Color Measurement Mistakes

Posted on Jan 28, 2026 by HunterLab

Color measurement is a precise science requiring an objective, practical, and effective approach. Accurate data and consistency improve customer satisfaction and product quality across industries ranging from food to plastics. When you know the most common mistakes made in taking accurate measurements, you can proactively prevent or avoid them and capture data you can have confidence in.

1. Relying on Subjective Descriptions and Visual Assessment

People perceive color differently, so subjective descriptions like “navy blue” can't accurately quantify it. In contrast, measuring according to the CIELAB color scale might give you a value of L*= 15, a*= -6, b*= -25, so you'll have an exact number to compare. 

Visual assessment leads to color measurement problems due to a lack of optical memory and physiological dysfunctions that influence perception. Even trained eyes with superior detection ability can become fatigued, compromising accuracy. 

2. Not Using a Software Program

A software solution simplifies measurement collection and comparison, making it a powerful tool for enhancing spectral data analysis.

3. Not Considering Environmental Factors

Metamerism describes the phenomenon where two colors match under one light but not another, which creates issues with color consistency. A spectrophotometer, which contains a standard light source, combats this phenomenon. Other environmental factors that can influence color include temperature and humidity, which alter the way a material interacts with the wavelengths. Controlling these within your facility can help promote more accurate measurements.

Posted in Color Measurement

Using Spectrophotometers to Meet the Color Standard for Canned Tomatoes

Posted on Jan 27, 2026 by HunterLab

In the chaos of working and raising a family, my husband and I often interact more like business partners than a married couple. Thankfully, last Sunday my husband and I escaped for a much needed ‘date night’ to reconnect and take a break from the daily routines of who was grabbing what from the store or taking a turn on carpool that night. For weeks I had been planning our dinner date and was excited to try a new Italian restaurant that opened in town. The ambiance and charm reflect an Old World feel and the candlelit tables were a definite plus, but the true test for Italian cuisine for me is in the sauce.

Genuine Italian food is known for its rich tomato-based sauces and homemade flavors, so I could not wait to taste and compare what this quaint little hole-in-the-wall had to offer. I was not disappointed! I always order ‘extra’ marinara sauce on the side to judge for quality and genuineness. When the vibrant red sauce appeared, the visual appeal did not disappoint. Appearance is one of the first criteria I use to base my opinion and just one taste had me sold!

Fresh tomato color and flavor are the keys to quality sauce, when paired with the right texture and flavor it is almost like a little taste of Italy right there on your fork. Although the restaurant owner would not share his secret recipe, he did provide a little tip that took me by surprise. He said that one of his tricks was choosing quality tomatoes…in a can! Did I hear that correctly? That bright red burst of flavor was just screaming ‘fresh tomatoes’, so of course I had to ask for the brand name. Now I can’t wait to try out my own recipe and perhaps fool some guests of my own with a canned version of ‘homemade’.

Posted in Color In Food Industry

Measuring the Color of Chocolate Sweetens Appeal in a Changing Market

Posted on Jan 27, 2026 by HunterLab

The changing chocolate marketplace is raising the bar for quality and opening up opportunities for experimentation. Image Source: Pexels user Kaboompics

Late last month, chocolate lovers received welcome news: a new study published in Heart revealed that chocolate reduces the risk of developing atrial fibrillation, a common form of heart arrhythmia.1 By examining data from the Danish Diet, Cancer and Healthy study, researchers found that people who consumed 1-3 servings of chocolate once a month had a 10% lower rate of new atrial fibrillation diagnosis than those who ate less than one serving a month. What’s more, the rate of diagnosis reduced “17% for one weekly serving, 20% for two to six weekly servings, and 14% for one or additional daily servings.”[“Chocolate May Reduce Risk of Developing Common Heart Arrhythmia”, May 24, 2017]

These findings add to a growing body of research suggesting that chocolate has the potential to protect cardiovascular health. Although most research thus far has focused on dark chocolate, the new study included both dark and milk chocolate. This follows data published in 2015 indicating that any type of chocolate reduces the risk of heart disease.2  And while doctors aren’t entirely sure why chocolate appears to benefit heart health, but they do have guesses. As Dr. Howard LeWine, chief medical editor of Harvard Health Publications, says, “It may be related to flavonoids, a type of antioxidant produced by plants. Flavonoids have been shown to help lower blood pressure, improve blood flow to the brain and heart, and fight cell damage.”3

This new recognition of the health benefits of chocolate also has clear benefits for the chocolate industry, allowing for new product and marketing opportunities and changing the way the public perceives sweet treats. Dark chocolate is already outpacing milk in terms of growth, attributed largely to growing awareness of its impact on cardiovascular health. But Katrina Markoff of artisan chocolatier Vosges Chocolate believes there’s more to the story. “Dark chocolate has health benefits and that is a source of appeal, but I also believe people’s palettes are really becoming more sophisticated,” she says. “There is more awareness and curiosity about milk and dark and even different specific varietals.”4 Indeed, the high-end chocolate market has exploded in recent years, spurring major players like Nestle to develop premium offerings while also opening up the door for a niche bean-to-bar industry.

In this changing environment, there is more pressure on both industry old-timers and newcomers to produce chocolates of the highest quality. At the same time, public acceptance of new and novel products means there is also plenty of room for experimentation. And whether you are refining traditional treats or inventing new concoctions, measuring the color of chocolate is now more important than ever before.

The color of chocolate gives consumers important clues about taste and quality. Image Source: Pexels user Pixabay

Posted in Color In Food Industry
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