How do I make a 10ug/L dilution out of pure TCA (trichloro anisole) stock?

I have the pure compound and need a spiking stock. I realize I will most likely have to do a step-wise dilution, but the very first step confuses me. I only need about 25 mL of the final 10 ug/L...

07 March 2021 8,479 2 View