Teneur massique = mconstituant / mĂ©chantillonMasses in the same unit; Ă100 for a percentage.
Use when: Specify dry or wet basis and nature of the constituent measured.
The metallurgy laboratory bench
Link sample, separation, measurement and interpretation.
What is happening?
The bench combines preparation and characterization operations: sieving, solidâliquid separation, chemical contacts and observations depending on the material chosen. Each result must be related to a sample and conditions.
A result only has meaning if its unit, its calculation base and its perimeter are known. A wet mass differs from a dry mass; a content differs from a recovery; a qualitative observation does not replace a titration.
The formulas, with their conditions.
Passant cumulĂ© = 100 â refus cumulĂ©Values ââin % of the reference mass.
Use when: Sieving with a sum of fractions compatible with the mass balance.
Where is this principle used?
Concentrator laboratory
Characterize a power supply and compare tests.
Process development laboratory
Maintain traceable conditions for interpreting results.
What to observe in the experiment
Choose a benchtop operation, note initial mass, masses of outputs and unit of result, then check the closure of the balance sheet.
References and readings
This sheet explains the principles and their assumptions. Educational simulation can simplify the process; an industrial model requires suitable data and validation.
Have you understood the essentials?
Only one correct answer per question. Answer all three questions, then view the answer key.
Intu Lab · Understanding sheet · Kimba Christian