In this article we ill discuss about the auxin and gibberellin bioassay of phytohormones. Auxin Bioassay of Phytohormones: Auxins are one of the major phytohormones essential for plant growth and development. Normally, in plants, auxins are synthesized in the growing apex and then transported to various regions for physiological activities. In plants, auxins are present in small quantities, thus chemical [...]
In this article we will discuss about:- 1. Subject-Matter of Colloids 2. Preparation of different types of Colloidal Systems 3. Tests. Subject-Matter of Colloids: The term 'Colloid' was first proposed by Thomas Graham to represent the heterogeneous mixture of suspended particles in a dispersion medium. The particles of colloidal dimension range in size from 1 to 200 mµ. Collodial particles [...]
In this article we will discuss about the procedure for analysing the quality of air. High Volume Sampler is a basic instrument used to monitoring ambient air quality. The sampler provides, in general, devices for basic measurement of air-borne particles, gaseous pollutants like SO2, NOx and CO. In the sampler the air-borne particles are measured by passing air at a [...]