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About Us

3nh specializes in high-precision color measurement instruments, including colorimeters, spectrophotometers, and haze meters, serving industries like textiles, plastics, and coatings. With innovative R&D and global reach, we deliver reliable solutions for color management and quality control, trusted by customers in over 80 countries.

Test Charts

Test Charts Frequently Ask Questions

Inconsistent results from a haze meter can stem from issues like calibration, dusty haze meter optics, inadequate power supply, and improper measurement technique. If you have any questions, you can contact our Haze measurement experts


A coating thickness gauge measures coating thickness. It measures coating thickness using three different principles: magnetic induction, eddy current, or ultrasonic. Depending on the coating type and the coating's substrate material, the appropriate principle is selected. For industrial and laboratory use, most of these units deliver accurate, non-invasive readings.


Our haze meters provide consistent and accurate data as per the requirements of ASTM D1003, ISO 13468, and JIS K7105. Due to the high precision, advanced optics, and automatic calibrations, haze meters produce repeatable and precise results for glass, films, and plastics while remaining simple to operate.


A colorimeter is a scientific instrument used to measure and analyze the color characteristics of objects or materials. It quantifies color by evaluating specific parameters related to human visual perception and standardized color spaces.

Yes, we can offer quality certification issued by our lab free of charge, or issued by third-party international inspection Organizations with extra charge, please contact us for confirmation.

Take into account the measurement range, type of samples, needed precision, any relevant standards, and your industry.


Colorimetry is a method that applies color intensity to ascertain the chemical concentrations. It is founded on Beer-Lambert Law, whereby the absorbance at a given wavelength is proportional to the concentration. It is popular in environmental and biochemical testing.

Every 2,000 - 3,000 hours or manufacturer recommendation to maintain consistent light and color quality.

Once ignited, the gauge will select the correct substrate mode. The probe should be placed flat on the coated surface. The thickness of the coating will show on the screen. Measurements should be taken on different areas of the surface to ensure accuracy.


The CCC is much like the CAC yet it frequently has advanced programmable lighting, sophisticated electronic control systems that allow for light source switching, and advanced visual testing.