you need to make 1 mL of a 10 um PNP standard form a 0.2mM stock solution in pH 10 buffer.How much of the stock PNP would need to be diluted in how much of the pH 10 buffer? You have a choice of a p-20 ,p-100,p-200,p-1000,a 1mL serological pipette , and a 5mL serological pipette. Which one(s) would you choose to make this standard and why? Explain how you would calibrate the pipette(s) you choose.