NEL Equipment Calibration
Each Use
Buck 210 Atomic Absorption Spectrophotometer
Hach DR2000 Spectrophotometer
Daily
Fisher 1003 Portable pH/mV/Temperature Meter
Fisher Accumet 50 pH/mV/Temperature Meter
YSI 58 Dissolved Oxygen Meter
Denver Instruments 250 Analytical Balance
Dionex DX-500 Chromatography System
Quarterly (checked daily)
Hach 2100P Turbidimeter
Annually
Precision Scientific STG80 Gravity Convection Oven
Preventive Maintenance
Daily
- Temperature checks are performed for the refrigerator and incubator. Results are logged in the temperature readings notebook.
- Specific conductance of laboratory deionized water is checked to monitor the performance of the system. Results are logged in the wet chemistry notebook.
- Class S weights are used to check the analytical balance at 0.1, 100.1, 100, and 0 gm. Results are logged in analytical balance notebook.
- Analysts perform an informal visual inspection of the instruments prior to commencing analysis. These checks allow personnel to monitor the condition and performance of the equipment.
Annually
Economy Laboratory Services inspects and services most of the major pieces of instrumentation in the lab, including pH meters, conductivity meter, turbidimeter, analytical balance, dissolved oxygen/temperature meter, spectrophotometer, and the NIST traceable thermometer. ESP, Inc. inspects ventilation system and performs an informal safety inspection.
