Products > Chromatography > National Scientific > National Scientific Sample Vials & Caps > Clear Sample Storage Vials
Superior quality 33 expansion borosilicate clear glass or 51A amber glass eliminat leaching of ions and provide consistant pH for duration of sample storage life. PTFE lined foam backing in caps offers broad chemical resistance. Caps are not autoclavable. PTFE/Silcone Septa Caps are available.