Canadian Council of Independent Laboratories (CCIL) Practice Exam 2026 - Free CCIL Practice Questions and Study Guide

The correct answer, which states that the maximum deviation of the recessed area of the capping mould from a plane is more than 0.05mm in 152mm, aligns with the established standards for capping mould manufacturing and assessment. In laboratory testing and construction practices, precise measurements are critical, and the specifications set guidelines for acceptable tolerances in mould designs to ensure quality results.

The identified maximum deviation of more than 0.05mm indicates a threshold that balances manufacturing capabilities with the required accuracy for test specimens. Deviations exceeding this range could lead to inconsistencies in testing outcomes, particularly in concrete tests where uniformity and precision are essential for achieving reliable results.

Other options suggest higher tolerance levels, which do not meet the typical industry standards for the performance of capping moulds. These deviations could compromise the integrity of the mould and the reliability of the tests conducted using them, emphasizing why the specified measurement of 0.05mm is the reasonable maximum. Overall, adherence to these tolerances ensures that laboratory practices yield valid and reproducible findings, thus maintaining the quality and reliability of laboratory assessments.