Sample Storage Vial ប្រើប្រភេទ 1, type A, 33 expanded borosilicate glass or 51A amber glass for storage glassware, with a range from 20mL to 60mL, provides a constant pH value to expand the storage life of the sample, chemistry inert lid ស័ក្តិសមសម្រាប់ chromatography and storage applications ភាគច្រើនបំផុត PTFE/epta