Description: Theory and principles of sampling.

Terminal Competency:

Summarize the concepts of sampling theory.

Enabling Competencies:

1. Explain decision units.

2. Explain representivity.

3. Describe evidentiary integrity.

4. Give examples of practices to maintain analyte integrity.

5. List components of SQC.

6. List components of Global Estimation Errors (GEE).

7. Discuss the use of sampling terminology as proposed in “Good Test Portions”.

To see a set of behavioral anchors, which provide further detail about the enabling competencies and can be used for assessment against the enabling competencies, contact IFPTI.

Description: A set of plans used for lab sampling operations.

Terminal Competency:

Articulate lab policies related to lab sampling.

Enabling Competencies:

1. Select SOP used in lab sampling.

2. State the sampling objective.

3. Explain the workflow associated with lab sampling.

4. Explain lab policy for sample retention.

5. Apply safety procedures in lab sampling.

To see a set of behavioral anchors, which provide further detail about the enabling competencies and can be used for assessment against the enabling competencies, contact IFPTI.

Description: Policies and procedures used to assure the representativeness of the test portion.

Terminal Competency:

Explain how QA/QC policies and procedures can be applied to achieve sample representativeness.

Enabling Competencies:

1. Discuss the importance of validating laboratory sampling processes.

2. Discuss the importance of verifying laboratory sampling processes.

3. Explain the importance of quality control for laboratory sampling processes.

To see a set of behavioral anchors, which provide further detail about the enabling competencies and can be used for assessment against the enabling competencies, contact IFPTI.

Description: Physical characteristics of lab sample.

Terminal Competency:

Describe the physical characteristics of laboratory samples that can introduce error into sample manipulation processes.

Enabling Competencies:

1. Define heterogeneity as the term applies to a laboratory sample.

2. Differentiate between compositional heterogeneity and distributional heterogeneity.

3. List the physical states of a laboratory sample.

4. Relate the impact of particle size on sampling errors.

5. Distinguish between infinite and finite element materials.

To see a set of behavioral anchors, which provide further detail about the enabling competencies and can be used for assessment against the enabling competencies, contact IFPTI.

Description: Imprecision and bias that cause the concentration or characteristic of the test portion to deviate from the true concentration or characteristic of the decision unit.

Terminal Competency:

Identify sources of error in laboratory sampling.

Enabling Competencies:

1. Describe relationship of error to mass.

2. Describe relationship of error to increments.

3. Describe relationship of error to sample correctness.

4. Give examples of errors from non-selection processes.

5. Give examples of systematic errors from selection processes.

6. Give examples of random errors from selection processes.

7. Give examples of gross errors.

To see a set of behavioral anchors, which provide further detail about the enabling competencies and can be used for assessment against the enabling competencies, contact IFPTI.

Description: Manipulation of a sample usually performed before a selection process.

Terminal Competency:

Describe the purpose of non-selection processes in laboratory sampling.

Enabling Competencies:

1. Define particle size reduction.

2. Describe particle size reduction techniques.

3. Explain the effects of mixing techniques.

4. Describe techniques used to remove extraneous material.

5. Describe how non-selection processes influences representivity.

To see a set of behavioral anchors, which provide further detail about the enabling competencies and can be used for assessment against the enabling competencies, contact IFPTI.

Description: The act of selecting a smaller mass or volume of material from a larger mass or volume.

Terminal Competency:

Describe the purpose of selection processes in lab sampling.

Enabling Competencies:

1. Differentiate mass reduction and splitting.

2. Explain the importance of multi-increment sampling.

3. Describe how splitting equipment assists in selecting a representative test portion.

4. Contrast one dimensional and two-dimensional sampling.

5. Explain characteristics of sampling tools

6. Describe the effect of lab sampling on representivity.

To see a set of behavioral anchors, which provide further detail about the enabling competencies and can be used for assessment against the enabling competencies, contact IFPTI.