How to prepare carbendazim diluted 800 times?

Yes, that's how the diluent is configured. (The premise is that your carbendazim purity is 100%, otherwise, the formula is calculated as water quantity = carbendazim quantity ÷ purity ×800). The purity of powder is mostly 50%, so the ratio of water and carbendazim is 1600: 1.

This need not be accurate to 600- 1000 times. Speaking of one milliliter, because you use powder approximation, so take 1g as 1ml (the density of these organic drugs is mostly around 1g/cm 3). You can also use the bottle cap of coke. The flat powder of 1g bottle cap is about 7g. .

In this case, 7 grams of water is 1 1200 liters (you can only improve your measurement and reduce the relative error without high-precision measuring equipment). If you don't know the answer, you can continue to ask me if I am satisfied or not.