Equipment is held at various working locations and the custodian of each unit is responsible for safekeeping and making the unit available for use when required. Equipment is located and held by custodians as follows:
- Arranging/initiating calibration by LKU Lab Technician of every test unit every six months
- Other periodical checks on the condition of all testing equipment
- Ensuring that operable test units and adequate stocks of mouthpieces are available at all times at each location.