An analytical or semi analytical balance is a form of scale that measures mass to a high degree of precision.It has a weighing capacity in the range of 100-500 g (typically 200 g)
A microscope is an instrument used to see objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using such an instrument.
The spectrophotometer is an optical instrument for measuring the intensity of light relative to wavelength.
A viscometer (also called viscosimeter) is an instrument used to measure the viscosity of a fluid. For liquids with viscosities which vary with flow conditions, an instrument called a rheometer use
Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water fit for specific purposes.
BOD – biochemical oxygen demand and COD – Chemical Oxygen Demand determine