i am thinking of buying a second hand spectrophotometer for grape juice and wine evaluation. most specifically the measurement of tannins. anyone know what i should be looking for? segest a type and ...
Posted by Ron 11 days ago
how much energy is needed to melt 4.24 grams of Pd
Posted by Anne 18 days ago
Why aluminum hydroxide is so common in people's life? Because its role is very extensive, also brought a lot of convenience to people's life, has the vital role in people's life, in every field has ...