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Thermometers are used to measure temperature​. There are 4 types of thermometers used in line probe assay (LPA) laboratories:

  1. Electronic Thermo Hygrometer
  2. Alcohol Thermometer
  3. Digital Maxima – Minima Thermometer
  4. Dial Spring Thermometer

 

 

Electronic Max-Min Thermo-Hygrometer

It monitors the temperature and humidity, and has the following features:

 

  • Recording of maximum/minimum humidity and temperature value automatically​
  • Alarm function​
  • Calendar function with months and years by pushing ADJ button (optional)​
  • Each thermometer is provided with a back stand and hanging hole​
  • Used in expert room and media preparation room​

Glass Alcohol Thermometer

It is used for monitoring temperature of refrigerator, incubator, Walk-in Incubator (WII) and Walk-in Cold room (WIC). ​It has the following features:

 

  • Temperature ranges from 0°C to +100°C ​
  • Accuracy: ±1.0°C or better within the range 0°C to +70°C​
  • Resolution: ±0.5°C ​
  • Sensor: Coloured alcohol in glass column
  • Temperatures displayed in degrees Centigrade​
  • Casing is always non-corrodible plastics or metal case​
  • Easily readable centigrade scale​

Digital Maxima-Minima Thermometer:

  • Resolution: 0.1°C
  • Accuracy: ± 0.1°C
  • Precision: ± 0.2 % full scale
  • Flexible probe (Preferably K type) Thermocouple, waterproof & Heat resistance cable/probe
  • Measuring frequency: 3 measuring per second
  • Display: Digital LCD display

 

Digital Maxima:

  • Measuring range: -100°C to + 60°C
  • It is used for calibration for -80 deep freezer, -20 deep freezer, refrigerator, WIC

 

Digital minima:

  • Measuring range: 0°C to +300°C
  • It is used for calibration for Incubator, Oven, WII, Autoclave, GT Blot, Twincubator, Thermocycler

Dial Spring Thermometer:

It is used for calibration for -80 deep freezer, -20 deep freezer, refrigerator, WIC.

 

  • Temperature Range: +50°C to +300°C
  • Accuracy: +1% Full Scale. Reading stabilization within 1 min
  • Casting Material: Optically clear strong glass cover with stainless surface mount (highly resistance to corrosion)
  • Type: Bimetallic dial thermometer
  • Easily readable centigrade scale

 

Maintenance: 

  • Verify that all thermometers in the laboratory are accurately reflecting the temperature​
  • Always use calibrated thermometers
  • Thermometers that are in use should be calibrated every 6 months and documented​

 

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Dr. Priyadarshini Sun, 14/01/2024 - 12:14

Each type of thermometer can come in a new slide. Digital minima and maxima are interchanged!