Preface

Colorimetry is the science of quantitatively defining, measuring, and communicating a color of any solid, liquid, or semisolid material, instead of subjectively describing it, for evaluating and producing the same color or measuring total color differences and other color interaction parameters like K/S, L\*, a\*, and b\* values, assured by instrumental color measurements.

Color is determined by psychological and physical interactions and the chemical structure of materials influencing its applications. There are many books and monographs available on the basics of color science, colorimetry, color measurements, and so on. However, in today's digital age in which techniques of color evaluations and their applications have advanced greatly, there is a need for updated literature.

Color quantification via advanced techniques has become an essential part of color application for all industries. Initial simple colorimetric measurements have been replaced by spectrophotometric (absorption spectroscopy and reflectance spectroscopy) analysis of colors for different sectors. Moreover, for commercial exploitation, industries are conscious of the importance of color measurement, communications, and precision matching. As such, this book discusses both fundamental and advanced applications of colorimetric analysis for quality assurance of products in terms of color specifications and tolerances acceptable by consumers. The book also presents case studies on practical guidelines along with difficulties and solutions for colorimetric analysis.

The book includes nine chapters.

Chapter 1: "Advanced Methods and Tools for Color Measuring and Matching: For Quality Check of Colored Products of Textiles and Apparel Industry"

Chapter 2: "Fundamentals of Colorimetry"

Chapter 3: "Application of UV-Visible Spectrophotometric Colour Analysis in Different Natural Product Identification"

Chapter 4: "Forensic Analysis of Bloodstain Color"

Chapter 5: "Application of Colorimetry in Food Industries"

Chapter 6: "Colorimetric Determination of Pyraclostrobin Fungicide Using P-Aminosulphonic Acid Coupling Reagent in Agricultural Soil/Environmental Samples by Spectrophotometric Analysis"

Chapter 7: "Study on the Compatibility of a Binary Mixture of Babul Bark and Other Natural Dyes Used on Gallnut Pre-Mordanted Cotton Fabric for Developing Compound Shades"

Chapter 8: "Colorimetric Characterisation and Process Standardisation for Application of Natural Dyes on Textiles: A Research Review"

Chapter 9: "Colorimetric Analysis to Study Dyeing Behaviour of Jute Textiles Using Selective Synthetic and Natural Dyes"

*Advances in Colorimetry* is a useful compilation of comprehensive information on fundamental and advanced techniques in colorimetric measurements and its industrial applications. It is sure to be helpful for researchers, scientists, technologists, and industrial practitioners.

I wish to acknowledge the support of the staff at IntechOpen, without which this book would not have been completed. I am especially thankful to all the contributing authors for their hard work and repeated revision after a strict peer-review process.

> **Dr. Ashis Kumar Samanta**  Professor, Retired Professor and Ex-HOD, Department of Jute and Fibre Technology, Institute of Jute Technology, University of Calcutta, Kolkata, West Bengal, India

Section 1

Advanced Methods and Tools

for Color Measurement

and Matching

### Section 1
