sop for drying of silica gel
To lay down a procedure for Drying of Silica Gel in Quality Control Lab.
This SOP is applicable of procedure for Drying of Silica Gel in Quality Control department
Head- Quality Control
5.1 Silica gel is most commonly used as a desiccant to control local humidity.
5.2 Silica gel when saturated with moisture indicates that gradually changes its color i.e. from Blue anhydrous state (dry) to pink hydrated state (wet).
5.3 Change silica from instrument if their color properties change as per point 5.2
5.4 Remove all the silica from desiccators (s) and other instrument in a glass tray or suitable pot.
5.5 Silica gel shall be regenerated by heating it to 105°C for three hours.
5.6 Allow the crystals to cool down before you touch them, and then restore them to their perforated containers in your camera bag or cabinet.
5.7 After regeneration silica gel get back color as anhydrous (dry) state.
5.8 Maintain record for drying silica in Annexure – 1
5.9 Do not heat Silica Gel to more than 180° C because it will lose its ability to absorb moisture.
5.10 Store them in an airtight container so that they don’t absorb moisture from the atmosphere when they are not in use.
Abbreviation Full form of abbreviation used
SOP Standard Operating Procedure
QC Quality Control
QA Quality Assurance
|ANNEXURE No.||TITLE OF ANNEXURE||FORMAT No.|
|Annexure-I||Drying Record for silica gel|
Controlled Copy No. 01 Quality Control Department
Master Copy Quality Assurance Department
10.0 REVISION HISTORY:
|Revision No.||Change Control No.||Details of Changes||Reason of Changes||Effective Date||Done By|
|00||Not Applicable||Not Applicable||New SOP|
DRYING RECORD FOR SILICA GEL
|S. No.||Date||Drying at °C||Drying Time||Done By||Remark|