CCIL Laboratory Equipment Calibration 3

Question 1

Which calibration approach involves comparing an instrument directly against a reference standard of higher accuracy?

Accepted Answer

Direct comparison calibration

Answer

Direct comparison calibration places the instrument under test alongside a reference standard to assess agreement under the same conditions.

Question 2

For a thermometer used in a CCIL-accredited laboratory, calibration points should ideally be chosen to:

Accepted Answer

Span the full working range of the thermometer in the intended application

Answer

Calibration points spanning the working range ensure the thermometer performs accurately across all temperatures used in practice.

Question 3

What does 'out-of-tolerance' mean when found during a calibration check?

Accepted Answer

The instrument's readings fall outside the specified acceptable limits

Answer

Out-of-tolerance means the instrument's error exceeds the maximum permissible error defined in specifications or the calibration procedure.

Question 4

In gravimetric calibration of volumetric glassware, which physical property of water is used to convert mass to volume?

Accepted Answer

Density

Answer

Water density at the measurement temperature is used to calculate volume from the measured mass of water dispensed or contained.

Question 5

Which document type formally defines the step-by-step process a laboratory must follow when calibrating a specific instrument?

Accepted Answer

Standard operating procedure (SOP)

Answer

A Standard Operating Procedure (SOP) provides detailed, repeatable instructions for calibrating specific instruments consistently.

CCIL - Canadian Council of Independent Laboratories Practice Test