Quality control sample setup examples

The following examples show how quality control samples are calculated to guide the QA/QC person in writing off the correct quantity. There are many other possibilities, but these examples provide insight into how the feature works in basic terms.

Example 1

Four data collection lines with the same sample unit of measure and Combine Samples set to Yes on all lines.

Data Element Code Sample Quantity Sample UoM Combine
Bacteria 0.25 LB Yes
Color 0.25 LB Yes
Smell 0.25 LB Yes
Temperature 0.25 LB Yes

This example results in a write-off of 1 LB.

Example 2

Two data collection lines with different sample units of measure and Combine Samples set to Yes on all lines.

Data Element Code Sample Quantity Sample UoM Combine
Bacteria 2 LB Yes
Color 1 KG Yes

In this example the system calculates back to the base unit of measure and writes off approximately 4 LB.

Example 3

Two data collection lines with different sample units of measure and Combine Samples set to No.

Data Element Code Sample Quantity Sample UoM Combine
Bacteria 2 LB No
Color 1 KG No

In this example the system creates two write-off lines: one for 2 LB and one for 1 KG.

Example 4

Four data collection lines with two different sample units of measure and Combine Samples set to Yes on the lines with sample unit of measure LB.

Data Element Code Sample Quantity Sample UoM Combine
Bacteria 0.25 LB Yes
Color 0.25 LB Yes
Smell 0.5 LB Yes
Temperature 1 KG No

In this example the system creates two write-off lines: one for 1 LB and one for 1 KG.