During the evaporation, the concentration of your extract, you might found sometimes not a powder. You might found an oily face and this time you need to check. If you have to try to crystallize, if you can crystallize, your extract will be better. If you can use the Hixane or the Atheit Petroleum, it depends for example. If you have a polar fraction and you have a polar crude extract, you have prepared it. And it still stuck in your flask as you can see here and also in this example. It seems that you have Elis Veskus. It is not enough dry yet. And here in this case in order to make it more practical, you have to try to crystallize it. You can crystallize as I said before by using a solvent which cannot dissolve your crude extract. For example, here I have a methanolic extract. I can use Hixane or the Atheit Petroleum. And I have to try to scratch the flask and to introduce the solvent between the crude extract. And if I can have crude extract, I evaporate the solvent. And I will recover it. It will be more practical if I would like to operate with it during the next sequence. If not, if I cannot, you can try to make some filtration. So this is a powder. This powder is more practical than the oil. So you need to try. This is the more important. And if there is no way, you will keep it as easy. You will keep it as Veskus one. Even if it is not good when you are operating with chemical reaction or you would like to make some activities. But if you can find some powder like this, this is the best thing. If you can not. So you can keep your oily sample.