Gardner Liquid Color Standard (No.11)

What is Gardner No. 11: Understanding the Gardner Scale

Color Measurement

Color measurement is important in many industries like petroleum, chemical and food. Color measurement is to determine the quality and characteristics of materials and substances. In this case the Gardner Color Scale is a widely used standard for measuring the color of transparent liquids from light yellow to dark brown. Understanding the basics of color measurement is crucial for industries that rely on accurate and objective color evaluation.

Understanding the importance and basics of color measurement in various industries.

Human eye is not a reliable tool for color measurement as it is subjective and biased. So industries rely on standardized color scales like the Gardner Color Scale to ensure accurate and consistent color evaluation. The Gardner Color Scale is a one dimensional scale that measures the yellowness of transparent liquids, it’s a must tool for quality control in industries that produce petroleum products, fatty acids and other transparent liquids. By using these standardized scales industries can maintain product quality and meet their specifications, so their products are free from contamination and impurities.

Gardner Color Standards: Liquid Color Standard (No. 11)

Gardner Liquid Color Standards are used in the ASTM C40 and AASHTO T 21 test methods for the determination of organic impurities in fine aggregates. These standards use polished glass filters in accurate visual comparison of color by instruments like the Gardner Delta Color Comparator, which can measure and report the color of transparent liquids. They are an alternative to the Organic Impurities Test Set. Individual standards are available in the 5 Gardner colors listed in the test method. The liquid is sealed in 0.47x4.6in (11.9x116mm) Dia.xH glass tubes marked with the Gardner number and packaged in a carrying case. Shelf life 5 years.

Features of Gardner Color Standards, Liquid Color Standard (No. 11:

• Liquid Gardner Color Scale reference standards for visual comparison of test samples

• The correlation between different measurement standards, such as those outlined in ASTM D6045, and the Gardner color scale helps in establishing the relationship between specific methods for assessing color in transparent liquids, petroleum products and other materials.

• Standards available for organic impurities test of fine aggregates

• 5 year shelf life in sealed glass tubes

Product Dimensions 0.47 x 4.6in (11.9 x 116mm) Dia. x H

Gardner Liquid Color Standard (No. 11 Features

Gardner Liquid Color Standard (No. 11 is a specific standard used in the ASTM C40 and AASHTO T 21 test methods for organic impurities in fine aggregates. It’s an alternate to the Organic Impurities Test Set and is sealed in a glass tube marked with the Gardner number. Gardner Liquid Color Standard (No. 11 is part of a range of standards that includes No. 5, No. 8, No. 14, No. 16 and No. 18 each with its own specific characteristics and uses. These standards are essential for accurate and reliable color to ensure quality control and meet regulatory requirements.

Transparent Liquids

Transparent liquids pose unique challenges in measurement. Color of transparent liquids can be affected by contamination, impurities and process variations. So it’s essential to use standardized scales and equipment to ensure accurate and objective color evaluation. Gardner is designed to measure the color of transparent liquids, a reliable and consistent method for quality.

Characteristics and challenges of in transparent liquids.

Measurement of transparent liquids requires specialized equipment like spectrophotometers and standardized color scales like Gardner. American Public Health Association (APHA) scale is another example of standardized color scale used to evaluate the color of transparent liquids, particularly in water quality. APHA scale ranges from 0 to 500 in parts per million (ppm) of platinum cobalt to distilled water. Understanding the characteristics and challenges of color in transparent liquids is crucial for industries that rely on accurate and objective color evaluation to ensure quality and meet regulatory requirements. By using these standardized scales and equipment industries can achieve reliable and consistent color, so their products are safe and quality.

Gardner Color Scale is a one dimensional scales system for measurement of transparent liquids like oils, varnishes and resins. Developed in 1958 it has 18 liquid color standards from light yellow (Gardner 1) to dark brown (Gardner 18). Each standard represents a specific color intensity so you can measure color consistently across your industry. Gardner Color Scale is an essential tool in quality control to ensure your products meet color specifications and appearance.

Measurement and testing is critical for transparent liquids. Gardner Color Scale is used in several test methods including ASTM D1544 and ASTM D6166 to determine the color of liquid samples. These test methods involve comparing the color of a sample to a known standard such as a Gardner Liquid Color Standard. The sample’s color is then assigned a value based on the closest matching standard. These procedures follow the standard test method established by ASTM for measuring the color of various types of liquids, ensuring consistency and accuracy. While visual comparison is a common method of measurement it can be subjective and prone to error. To improve accuracy objective instruments like spectrophotometers are often used to get reliable and precise results.

Organic Impurities Accessories:

Sodium Hydroxide Pellets 1lb container standard or reagent grade for testing to ASTM and AASHTO standards

Organic Impurities Bottle with Lid colorless glass with graduations in oz and mL 8oz (236.6mL) capacity

Organic Impurities Color Reference Disk 5 permanent, fade-free solid-glass reference colors of 5, 8, 11, 14 and 16 on the Gardner in a plastic frame

Gardner Liquid Color Standards Gardner Nos. 5, 8, 11, 14 and 16 for an alternate to reference colors and meet ASTM/AASHTO requirements

Glass standards, which are precision-polished glass filters used in measurement for transparent liquids, are also essential for accuracy and consistency in measurement according to established testing methods like ASTM D1544.