Polystyrene bottles. With leak-proof closures, 100 mL.
Carefully clean and rinse all glassware and plasticware with HNO3 or HCl to avoid metal contamination.
Cleaning procedure for glass and plasticware.
Acid solution: 500 mL concentrated HNO C(c)+4500 mL deionized water, C(a).
Wash first with and detergent.
Rinse with tap water, followed by deionized water, then with dilute acid.
Finally rinse 4-5 times with deionized water.