The solution is indispensable on the instrument. The concentration of the solution is known by the amount of the solution. The concentration of the solution generally refers to the amount of solute contained in a certain amount of solution. There are several ways to express the commonly used concentration:
(1) The concentration of the substance c (B) The ratio of the amount of substance b (B) of the substance B to the volume V of the corresponding solution, the common unit is mol/L
(2) Mass concentration Ï (B) The ratio of the mass of solute B to the volume of solution in solution, mostly g/L, mg/L
(3) Mass fraction ω (B) The ratio of the mass m (B) of the substance B to the mass m of the solution, often expressed in %
(4) Volume fraction ψ (B) The volume fraction of the substance B is usually used to indicate the concentration of the solution in which the solute is a liquid, and it means the ratio of the volume V(B) occupied by the component B in the solution to the volume V of the solution. Often expressed in %
(5) The volume ratio concentration refers to a volume ratio of the A volume solute and the B volume solvent phase, and is usually expressed by VA+VB or VA:VB.
(6) Titer is the number of grams of solute contained in 1ml of solution. The titer is expressed in two ways. One is expressed by T according to the formulation standard, and the other is expressed by the substance to be tested. g/l
The above are several commonly used methods for expressing the concentration. The solution is also known. Our company produces a variety of solutions, such as phosphorus, hydrazine standard solution, conductivity calibration solution, reference electrode filling solution, etc. Welcome to consult .
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