SOP Title: Temperature and Relative Humidity Monitoring
- Objective:
To lay down procedure for recording of Temperature & Relative Humidity (RH) of the room or area specified product manufacturing, testing, storage or handling.
- Scope:
This procedure is applicable to different critical areas in Production, Quality Control and Warehouse Department.
- Responsibility:
Concerned Department: To monitor and record the temperature and RH as per procedure.
QA Department: To ensure that the procedure is being followed meticulously in all specified areas.
- Accountability:
Head QA/Concerned Department.
- Procedure:
- Definitions:
Concerned Department: The Department which belongs to particular area.
Relative Humidity: It is the ratio of the partial pressure of water vapour to the equilibrium vapour pressure of water at the same temperature. RH depends on temperature and the pressure of the system of interest.
- Procedure:
| 5.2.1 | Equipment used | |
| 5.2.1.1 | Wet and Dry Bulb Thermometer (Hygrometer) OR Digital Thermometer. | |
| 5.2.2 | Precautions | |
| 5.2.2.1 | Always ensure that wick of wet bulb thermometer is wet and dipped in a vessel containing purified water. |
|
| 5.2.2.2 | Water is to be replaced every day & both wick and vessel is to be cleaned once a week with soap solution and then with tap water. | |
| 5.2.3 | Record the temperature of both Dry Bulb and Wet Bulb Thermometer in °C. | |
| 5.2.4 | Find the difference (depression) in temperature between the two. | |
| 5.2.5 | Refer the Temperature and Humidity Chart to determine the RH of the room. | |
| 5.2.6 | To find the RH note the coinciding reading under the depression in temperature of Wet Bulb against the temperature of Dry Bulb. | |
| 5.2.7 | Ensure that the Temperature and RH is well within the specified limit. Record actual Temperature and RH in the specified in Annexure. | |
| 5.2.8 | Frequency: Temperature and RH shall be recorded twice a day i.e. in each half at about 10.00 Hrs and about 16.00 Hrs. | |
| 5.2.9 | Temperature and RH shall be maintained as per the storage condition of the product or material and room/area design specification. | |
| 5.2.10 | In case of non compliance of Temperature and RH specification, it shall be immediately reported to the Concerned Department Head and corrective action shall be taken. |
- Abbreviation:
| Abbreviation | Expansion |
| SOP | Standard Operating Procedure |
| RH | Relative Humidity |
| No. | Number |
| i.e. | Id Est (that is) |
*Note – Ready to use SOP available in “DOWNLOAD” Section.