Long and narrow neck

·         Scale is permanent brown stain

·         Without “Sealed 3” marking

·         Designed for use in AOAC 920.111 test procedures and to meet more restrictive California specifications

·         Bottle may also be used in test for unsulfonated residue of petroleum plant spray oils (ASTM D483)

·         Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements