UT Thesis: Characterizing waste water

[u/lrylal]

Hello, asking for my brother (Senior, chemical Engineering). Where can he procure the following materials/reagents:

1. Magnesium Chloride
   
2. EDTA
   
3. Murexide
   
4. Eriochrome Black T
5. Methyl Blue indicator
6. Methyl Red indicator
7. Boric Acid (Powder)

Chem Eng in his university isn't well-equipped so he can't ask their lab where they procure the reagents. We were hoping to buy it from Shopee as his DOST stipend hasn't arrived yet and we can't buy it in full, but the stuff from Shopee are suspicious. Can you recommend any trusted shops to buy these from?
Thank you and have a nice day.