I think that we might have to do PSD of the same Alumix samples again. The values we obtained today are a bit too high and they might confuse your results later on. I'm not sure whether it is anything to do with the surface agent that we dropped in. I asked Dr.Sirilak (Ceramic Engineering) and she said that we need to do sampling carefully. There is the technique that I will tell you in person again because it is too complicated to explain in this email. We might also have to do small sampling using alcohol instead of water just to see what happens. But at least we don't go to recheck it at Chula. So please make a booking with K. Sujitra again next week na ka.