HunterLab HunterLab instruments duplicate how our eyes see color. They measure your product color and give numerical values that correlate to what you see. These objective measurements optimize the confidence of your quality decisions. HunterLab expertise and

HunterLab instruments duplicate how our eyes see color. Our spectrophotometers measure your product color and give numerical values that correlate to what you see. These objective measurements optimize the confidence of your quality decisions. HunterLab's more than 60 years of experience and expertise ensure that you have the right spectrophotometer for your application. That's why thousands of companies have selected HunterLab to be their color measurement partner.

HunterLab Asia-Pacific

HunterLab Asia-Pacific

#ConvertingTechnologyExhibition2020 #TokyoBigSight

#HunterLab #ColorMeasurement #spectrophotometer #STHT #Vista #HazeMeasurement

What is the relationship between the APHA/Pt-Co/Hazen and Gardner color scales? 🤔👇
What is the relationship between the APHA/Pt-Co/Hazen and Gardner color scales? - HunterLab Horizons Blog

What is the relationship between the APHA/Pt-Co/Hazen and Gardner color scales? 🤔👇

The APHA/Pt-Co/Hazen and Gardner visual color scales were both originally based on liquid chloroplatinate color standards but have different history and intended use. In the chemical, pharmaceutical and plastics industries, APHA/Pt-Co/Hazen is used to differentiate trace amounts of yellowness in nea...

HunterLab Asia-Pacific

HunterLab Asia-Pacific

#AutomotiveWorld2020🇯🇵 #HunterLab #ColorMeasurement #MiniScanEZ #Vista #Agera

Happy Holidays & Merry Christmas 🎅!

Happy Holidays & Merry Christmas 🎅!

HunterLab Asia-Pacific

HunterLab Asia-Pacific

Drink Japan 2019


Happy Thanksgiving!

👋 We are at #IBIE2019 (International Baking Industry Exposition) in Las Vegas 🎰 exhibiting our innovative color and appe...

👋 We are at #IBIE2019 (International Baking Industry Exposition) in Las Vegas 🎰 exhibiting our innovative color and appearance measurement solutions. We are focused on helping our customers achieve successful outcomes. Stop by and have a conversation 🤝with us (Booth #644)

#colormeasurement #hunterlab #bakingexpo #ibie

Hunterlab Malaysia

Hunterlab Malaysia

#56 What are the SCAA Roast Coffee Standards?

The SCAA (Specialty Coffee Association of America) has produced a series of eight visual color standards for roast classification of ground coffee.

Visual SCAA Roast Coffee Color Standards from “very light” to “very dark”.

SCAA item R4001 consists of a light-weight black vinyl kit (10″ x 12″ x 1 3/4″) containing eight color disks, numbered in increments of 10 ranging from “Very Light” (tile # 95) to “Very Dark” (tile #25).

The kit also includes 2 background sheets, two standard Petri dishes for sample presentation for visual evaluation, and an easy-to-read manual. These (8) industry standard disks were designed to provide a visual guide for the degree of roast as a purchasing specification for both roasters and their customers.

Reporting in SCAA visual grades is inherently less precise than using Hunter L, a, b or CIE L*, a*, b* color values and correlated SCAA Coffee #. For best results using this visual coffee color evaluation system, you need to use balanced white light that minimizes the glare off the card and visually offset the texture difference between the roast ground coffee and the flat, uniform coffee standard. The SCAA # and Roast Classification system can perform well as a purchasing specification.

The HunterLab ColorFlex EZ Coffee meter comes with a built-in correlation to report both SCAA # and SCAA Roast Classification, as well as the HCCI – HunterLab Coffee Color Index used for roast process control.

Find us at or reach us at [email protected] for more information.

Hunterlab Malaysia

Hunterlab Malaysia

# 50 Hunterlab ColorFlex EZ Coffee Meter

HunterLab developed ColorFlex EZ Coffee meter. The colour of coffee is important because it is predominantly used to assess the degree of roasting. The CFEZ Coffee is specially designed to measure the color of roasted coffee grounds, freeze-dried coffee, and instant powders.

Specialty scales have been added to the CFEZ to help easily determine the quality of the coffee being measured.
These scales include the
-HunterLab Coffee Color Index (HCCI),
-SCAA (Specialty Coffee Association of America) Number, and
-SCAA Roast Classification.

The CFEZ Coffee also now comes with a PQ (performance qualification) coffee tile. This tile allows the user to check the CFEZ Coffee instrument to ensure that it is reading color as expected.

The CFEZ Coffee has been designed to consistently measure lot to lot differences to improve upon consistency and batch to batch production quality. By using the CFEZ Coffee it will be easy for to define the degree of roasting. The CFEZ Coffee gives users a quick and easy way to quantitatively determine the quality of their coffee.

You can also visit us at or reach us at [email protected] for more information. Have a nice day!

APHA Vista standardization

A brief lesson in standardizing your Vista to measure APHA samples.

#hunterlab #colormeasurement

A brief lesson in standardizing your Vista to measure APHA samples.

HunterLab Asia-Pacific

HunterLab Asia-Pacific

We are now at #chinaplas2019🎊🎉
See you at our booth. no.: 9.2 J01😊

#Hunterlab #Agera #Vista #UltraScanPRO #STHT

Hunterlab Malaysia

Hunterlab Malaysia

# 43 What is Colour and how is it measured?

The most important part of Hunterlab concept is helping our customers to measure colour. We have shared many posts on colour application in this world but have you ever wonder how colour exists? At this post, you will learn more about why colour appear as they do and how they are measured.

1. 3 Components in colour observation: Light , An object , An observer.

2. A LIGHT source emits radiant energy in the form of visible light from 400 to about 700nm.
Light source is one of the elements that must be controlled in order to accurately judge colour. CIE has developed standardized illuminants for colour judgement by human observers or measurement by instruments. Each illuminant has a different composition of various wavelengths of visible light.
The most common illuminants are :
D65 - Noon Daylight (commonly used)
A – incandescent
F2 - Cool White Fluorescent

3. OBJECTS that are viewed themselves contribute to the perception of color and appearance by modifying the light from the light source. Colorants in objects absorb some wavelengths of the light and reflect/ transmit other wavelengths.
Eg: A red object reflects the red wavelengths of light and absorbs all other wavelengths. It is the reflected red light that causes us to see the objects as red.

4. OBSERVER means a human eye which receives the light and the brain which provides the perception for the vision. Since different humans perceive colour and appearance in different ways, subjectively, attempts have been made to ‘standardize’ the human observer. Hence 2° and 10 ° Observer were developed by conducting experiments.

Conclusion :
All 3 elements of the observing situation should be taken into account in colour measurement.

For more information, please visit us at or reach us at [email protected]

Hunterlab Malaysia

Hunterlab Malaysia

#42 Monitoring Color Degradation and Variation of Fluorescent High-visibility Colorings in Safety Garments

Suppliers of textiles for safety garments in rail industry of Australia come from all over the world. However, the railway industry in Australia does not have specific safety clothing standards but refers to AS/NZS 1906.4.2010 ‘High-visibility materials for safety garments.’ Thus, variation in color among textiles from different suppliers exists. On the other hand, after prolonged usage, color degradation of the garment products occurs but there is no guideline on when the safety garments should be replaced.

In order to evaluate the color variation and degradation, Vijayan (2016) performed a study using HunterLab Colorflex EZ. Photometric and colorimetric properties of the background color of garment substrates were measured and were evaluated for compliance with the Standards, including the ANSI Z535.1.2011 and BS EN ISO 20471.2013 standards, after washing and exposure to UV.

The results addressed the variations in requirements among the various Standards and illustrated the impact of washing and UV exposure on the color of the color substrates used in safety garments.

For more information, please visit us at or reach us at [email protected]


HunterLab is hiring for these positions - Senior Electrical Engineer, Manufacturing Engineer, HR Generalist, Materials Handler & Assembler II.

Learn more about our work culture, benefits and open positions here

Hunterlab Malaysia

Hunterlab Malaysia

#39 Not Only for Good Looking: What Tooth Color Tells Us?

Clean, bright and white teeth significantly affect one's appearance. A wide spectrum of toothpaste and dental procedures have been developed for whitening teeth. However, the natural color of teeth changes continuously.

Gómez-Polo et al (2015) assessed the predictability of color of maxillary central incisor based on patient age and gender. In the study, tooth color of one of the maxillary central incisors of 1361 Caucasian individuals aged 16 to 89 years was measured. CIE L*, a*, b*, C* and h as well as age and gender of patients were recorded.

Based on regression analysis, both age and gender had significant interaction with all color coordinates. Essentially, age was a stronger predictor of tooth color as compared to gender. The impact of age was highest on L* value, accounted for 45% of total variation whereas 21% and 17% respectively for a* and b*. However, gender only added between 3% and about 6% of the variance explained for each of the variables predicted.

Teeth became darker yellower and more reddish with increasing age and L* value was shown to be significantly correlated with aging. These findings not only addressed the marketing potential of tooth whitening products but also the potential value of color measurement in forensic science.

For more information, please visit us at or reach us at [email protected]

Hunterlab Malaysia

Hunterlab Malaysia

#38 Correlation between Color Data and Food Extrusion Conditions

Certain food substances such as spaghetti are produced by extrusion. It is important to realize that raw material contents and extrusion conditions including moisture, temperature as well as grinding speed will lead to variation in resulting food color.

A classical study by Sgaramella and Ames demonstrated the color reflectance change of wheat food substances, which contained starch, glucose and lysine, during extrusion cooking process. Their results showed that, increasing the die temperature or the amounts of glucose and lysine, or decreasing the moisture content, would increase the color intensity of the ground extrudates as reflected by decreased L* and increased a* and b* values. Moreover, decreasing the moisture content appeared to have greater influence on color development than increasing the die temperature.

The study serves as a demonstration on how quality of extruded food can be monitored, especially for on-line inspection.

For more information, please visit us at or reach us at [email protected]

HunterLab's cover photo

HunterLab's cover photo

🔥🔥🔥📣📣Introducing #Agera. Our newest color & appearance measurement solution delivering simultaneous measurements of refl...

🔥🔥🔥📣📣Introducing #Agera. Our newest color & appearance measurement solution delivering simultaneous measurements of reflected color, gloss, and image capture in one simple measurement.

Interested? -Visit here:

HunterLab Asia-Pacific

HunterLab Asia-Pacific

Evaluating Kimchi Fermentation Process Using Colorimetry

Kimchi is an iconic Korean food comprising cabbage pickled in salt, spices and mixed seasonings. The fermented vegetable of Kimchi is considered a probiotic food that enhances health. Former opinion suggested that Kimchi exhibits its most attractive taste, flavor and texture when properly fermented at a pH of about 4.2 and 0.6-0.8% of titratable acidity.

Recently, Kim et al. evaluated the correlation between colorimetric properties and stages of fermentation of Kimchi using colorimetric technique and HPLC. The results indicated that changes in total color difference occurred continuously during fermentation process with a maximum dE achieved after 28 days. Based on regression analysis, color data could be applied as Kimchi fermentation indicator.

For more information, please visit us at

Kim et al., Journal of Food Engineering, Volume 240, January 2019, P. 65-72

#Hunterlab #Color #Kimchi

Hunterlab Malaysia

Hunterlab Malaysia

#37 Solution Color Test in Pharmaceutical Industry

Color measurement is often misunderstood and underappreciated. For instance, some may say they can compare different colors with their eyes while other people may believe using digital imaging or apps in cell phones can generate accurate color data. Essentially, pharmaceuticals are related to human health and thus the overall quality control, including control in color and appearance, is crucial.

As we addressed here previously, digital imaging is not true color measurement and cannot always generate the actual colorimetric properties of specimen. Besides, human vision and memory are not reliable as well. Further, there are certain colorimetric properties cannot be measured by digital imaging and human vision such as metamerism. On the other hand, the color measurement of very dilute solutions required delicate colorimetric spectrophotometers in order to obtain precise results.

In pharmaceutical industry, color data would serve as important reference data for quality control. Importantly, the coverage of color series addressed in most pharmacopoeias is somehow incomplete. In particular, there is no reference for blue color (negative b* value, see attached figure). Hence, color data would serve as objective reference value for color in this color dimension.

To learn more applications of solution color measurement, please visit us at


👋👋 Today is the day! We are exhibiting our newest color, gloss and haze measurement solutions at #ANTEC19.


ANTEC® 2019, produced by SPE-Inspiring Plastics Professionals, is the largest, most respected and well-known technical conference in the plastics industry. It’s where classroom theory connects with real-world solutions.

Marriott Detroit Renaissance
Renaissance Center
Detroit, MI

Booth # 👉👉 107


We're at #Pittcon! Excited to see you all today! Visit us at booth 1907. #Pittcon2019 #HunterLab

Hunterlab Malaysia

Hunterlab Malaysia

#36 Estimating Haze Active Proteins in Beer by Haze Measurement

A former study by Mercedes Lataza Rovaletti et al (2014) evaluated the influence of polysaccharides on the interaction between tannic acid (TA) and haze active proteins (HAP) in beer. In the study, the mechanism and factors affecting haze formation in beer including the concentration, size, and relative refractive index of colloidal particles in beer suspension, ionic strength on the interaction of HAP and TA, interactions between components as well as protein contents were measured. Their results suggested that ionic strength does not modify the interaction between haze precursors and tannic acid but proteins contribute substantially to haze formation.

The report pointed out that interaction between proteins and polyphenols would induce colloidal instability in beer. Essentially, the interaction leads to haze formation and reduces physical shelf life of beer. In order to assess the content in HAP in beer, TA can be added to beer samples followed by haze measurement since any measured increase in haze is expected to be proportional to the amount of HAP in the beer sample.

To learn more applications of solution color measurement, please visit us at or reach us at [email protected]

Welcome Asia-Pacific team!

Welcome Asia-Pacific team!

Happy Friday! 🍻🎉

A busy week at #HunterLab office filled with fruitful meetings to prepare the launch of #Agera - Innovation for Simplicity!

#color #gloss #imaging #comingsoon

Hunterlab Malaysia
Hunterlab Malaysia

Hunterlab Malaysia

#34 Development of Need-based Fertilizer Management in Irrigated Wheat by Color Measurement

Inappropriate time and insufficient amount of fertilizer application adversely impact the agricultural production yield. However, over application of fertilizer would lead to wastage. Thus, a need-based fertilizer management would provide information for farmers on time and amount of fertilizer application.

The color of green leaf is mainly governed by the occurrence of chlorophyll whereas different shades of green color on a leaf can be displayed in a leaf colour chart (LCC). A former study by Varinderpal-Singh et al (2012) demonstrated that color greenness of leaf in irrigated wheat (Triticum aestivum L.) was significantly correlated with LCC score (picture attached). Essentially, reduction in color greenness of leaves in irrigated wheat, which could readily be measured using colorimetric spectrophotometer, indicated nutrient depletion and fertilizer should be applied. Hence, color measurement makes need-based fertilizer management possible and would enhance efficiency for fertilizer application.

For more details, please visit us at or reach us at [email protected]


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