Thank you for your email. On the testing methodology, our QA/QC department has sent you the relevant documents yesterday. Do let us know if you have any questions on this.
Regarding the method to ensure sustainability, we recommend to store the end-product (in satchel or cup) in an air-conditioned room of below 30 degree Celsius, out of direct sunlight. That should allow the shelf life to be not less than 1 year from manufacturing date.
We look forward to hearing from you by end of February. Following that we understand that there will need to be a packing test and audit.