PRODUCT STABILITY TEST

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Purpose:

The objective of the test is determination of shelf life by using accelerated aging test method according to ASTM 1980 and ISO 11607.

Materials:

Test Sample, Room or Cabinet, Control Apparatus, Hygrometer, Thermometer

Test Method:

1.       Select the Rate Reaction Coefficient (Q10) value. 

2.       The desired shelf life(Retention Time (RT)) of the test sample it can be 1, 2 upto 5 years depend on the sample.

3.       Define aging test time intervals, including time zero using the following equations:

 

AAF = Q10 [(TAA-TRT)/10] 

Where:  TAA ≡ accelerated aging temperature (°C), and TRT ≡ ambient temperature (°C).

 

AAF= 2 [55-25/10]

AAF= 8

Accelerated Aging Time (AAT) = Desired (RT)/AAF

AAT  = 45 Days

 

4.       Test conditions, room temperature (TRT). TRT = 25°C,

5.       Accelerated aging temperature (TAA)= 55°C

6.       The test duration is calculated using the Q10, TRT, and TAA. Time required for accelerated aging is 7 weeks

7.       After testing Sample is Evaluated visually and under microscope.

 

Observation

Visual and Microscopic Inspection

Rust Appearance

Observed / Not observed 

Surface Damage

 Observed / Not observed 

Texture

 Observed / Not observed 

Any other observation

 Observed / Not observed                                                                    

Performance Test

The  performance should also be tested for sample after accelerated testing

Conclusion

Physical deformation/No physical deformation was found during and after the accelerated aging test.  Above mentioned samples are stable/Not stable throughout test duration. Performance Test also compromised/Not compromised after each interval.


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