It will be the manual of standard practice for many years, and there will be few scientists whose own technique will not benefit from the adoption of its recommendations. Trends in Analytical Chemistry; I would recommend this book as essential reading for anyone who uses spectrophotometry and I would suggest that it should be used as the basis of all courses of instruction given to technicians, analysts and chemists generally. Education in Chemistry

• Membership of the working parties. General considerations on UV-visible spectrometry. Cell design and construction. Instrument design considerations. Liquid absorbance standards. Solid absorbance standards. Stray-light. Wavelength calibration. Cell handling. Tests of cell performance. Recommended procedures for standardization.