Nov 17, 2020 · The Sample Storage Vials for environmental analysis produced by Aijiren are often used to store samples and are made of clear glass and amber glass. Aijiren has 15mm and 24mm screw neck vial, 15mm vial has 8ml and 12ml capacity, and 24mm vial has four types: 20ml, 30ml, 40ml and 60ml.