Jan 11, 2016 instruments: an Astoria 2 autoanalyzer, a Perkin-Elmer AAnalyst 300 atomic You will have to add 0.3ml .3ml H3PO4 per liter to get. Screw neck vial, N 9, 11.6x32.0 mm, 0.3 mL, inner cone, PP tr. Plastic vials are used in ion chromatography, for heavy metal analysis, for polar (e.g. proteins) or pH-sensitive samples and AAS, CE ...