Description

Brand: armfield

Model: CERb

Country of Origin: UK

Manufacture: China

Description:

The Liquid Diffusion Training System is an educational setup designed to demonstrate the principles of liquid diffusion and mass transfer. This system allows students and researchers to visually observe how liquids mix and diffuse through one another under controlled conditions, providing valuable hands-on experience in chemical engineering, physical chemistry, and environmental science.

This system is ideal for training purposes in academic labs, research centers, and industrial training programs where understanding diffusion processes is crucial for applications such as chemical reaction engineering, water treatment, food processing, and pharmaceuticals.

 

Features:

• The liquid diffusivities coefficient apparatus laboratory equipment should be designed to enable measurement of molecular diffusivities relating to an equimolar counter-diffusion process and in so doing, familiarize students with the basic notions of mass transfer theory
• Accurate measurement of mass transfer rates in the absence of convective effects
• Use of Fick’s law to deduce diffusion coefficients from measurements of mass transfer rate and concentration difference
• Simple analysis of a first-order unsteady state process effect of concentration on diffusion coefficients
• To determine the diffusion coefficient of 1M NaCl solution
• Unique diffusion cell to overcome the traditional problem of slow diffusion rates in liquids requiring long observation times but without sacrificing accuracy or introducing convective effects
• Essentially, the cell should consist of a honeycomb of accurately dimensioned capillaries positioned between two liquids of differing concentration of the solute, whose diffusion coefficient is to be determined
• In practice, a small volume of concentrated solution can be placed on one side of the honeycomb, whilst the other side may consist initially of a large volume of pure solvent (water)
• As diffusion of the solute occurs, the concentration within the larger volume should increase and can be monitored with a conductivity sensor & meter
• The mixture should continuously be stirred with a magnetic stirrer to ensure uniform concentration within the bulk liquid

 

Technical Specifications:

• Bench mounted apparatus for the determination of diffusion coefficients of components in the liquid phase
• The method should employ a diffusion cell of capillary tubes so constructed to permit equimolar counter diffusion between liquids of differing concentration each side of the cell without convective effects being present
• Concentration changes on one side of the cell with respect to time to be measured with the conductivity cell and the meter provided
• Magnetic stirrer to keep the bulk solution well mixed
• Should be possible to obtain reproducible and accurate values of diffusivity within a period of 1.5 hours of practical laboratory time
• Diffuser vessel: Capacity 1L
• Conductivity meter: Minimum 3 ranges (199.9µ5 to 19.99mS)
• Computer output: RS-232
• Should be Battery powered
• Should be supplied with software for conductivity meter,

Applications of the Liquid Diffusion Training System:

• Chemical Engineering Education
• Physical Chemistry
• Environmental Science
• Pharmaceuticals and Food Processing
• Water Treatment
• Research

Accessories:

• Communication cable
• Battery
• Stopwatch
• Complete 5 days Training Included
• Printed operation manual

Warranty: 1 (One) year with services