When handling chemicals during lab it is important to proceed with caution. Wear gloves whenever pouring chemicals or handling them. If there is a spill be sure to let the teacher know. If you have to dispose of chemicals, always use the waste containers provided on your lab tables.
11 âUnsystematicâ Threats to Reliability 4. Instrument reliabilityâthe research instrument or measurement approach itself (e.g., poorly worded questions, quirk in mechanical device)5. Data processing reliabilityâmanner in which data are handled (e.g., miscoding).
Serviceability / Reliability. Reliability is always directly related to the number of moving parts. Enthalpy wheels have a relatively large number of moving parts such as motors, belts, axles and bearings and sometimes even variable speed drives. These items also require periodic maintenance such as bearing lubrication.