Dear Khun Anupong
Please see the answer to question as below:
1. Supplier says will do open machine, and make a stir before and then scoop up Chemical.
2. In addition to this 2 process, doesn’t affect the value of d.
Dear Khun Nichada and All concern,
Please see the document for Item PE 3,4 and PE 5 as attach file.
If you have any question, please contact to me anytime.
Best Regards,
Nittaya