Applies to QEST Web App

Contents

Washing

Open

While there are a variety of formats in Washing sections between the different sieve analysis test methods, the basic features are:

• The recording of the equipment used in washing and drying the test portion.

• The recording of the drying process used to determine the test portion dry mass.

• The calculation of the percentage, and/or mass, of the test portion that is finer than the washing sieve.

Additional Functions

The following functions may be encountered, in some form, as additions to the washing process.

Particle Size

In some circumstances, knowledge of the maximum particle, or grain, size in the washed portion of the sample is required.

Depending on why it is required, this information can be in the form of a particle (sieve) size or a description.

Open	Allows the user to record the overall grain size of the washed material in descriptive terms.

Washing Additives

Wetting or dispersing/dispersal agents are often added to the water that a test portion is soaked in prior to washing. Some test methods require that the presence, or absence, of these agents be recorded. In some cases, the name of the agent may be required to be recorded, as well.

Open	Allows the user to record whether or not a dispersing agent was added to the soaking water.

Related Articles

The following topics are described in separate articles.

• Sieve Analysis Test Preparation, Visual Description

• Sieve Analysis Test Method, Test Procedure

• Sieve Weighing Method, Weighing Pan Masses, Calculation Method

• Adding Sieves, Refreshing Sieves

• Managing Sieve Analysis Separations (Sample Splitting)

• Sieve Portion Preparation

• Sieve Analysis: Portion Sieving, Sieve Set Selection, Sieving in Parts

• Sieve Analysis Separations

• Sieve Analysis Results, PSD Chart, Calculated Results

• Sieve Analysis Reporting