Preparation, calculation, and record-keeping — the practical side, done precisely.
Moisture, heat, light and oxygen, and what each one actually does. Plus the distinction that resolves most storage arguments: microbial safety and chemical stability are two different clocks.
Molecular size, a fifteen-minute clearance window, and a 150-microlitre ceiling decide it. Not formulation effort.
Aim at the glass, never at the powder. Swirl, never shake. The short procedure for putting a dried peptide back into solution, and the reason behind each rule.
Milligrams, micrograms, millilitres and International Units — the conversions, the concentration formula, and the thousand-fold error that matters most.
