1) Complies with the standards in ISO 4796-1:2016 Laboratory glassware -- Bottles -- Part 1: Screw-neck bottles (does not apply to 10 ml bottle) 2) Manufactured from DURAN borosilicate glass 3.3. DURAN is a neutral glass, classified as a Glass Type I according to USP <660>, EP (3.2.1) and JP <7.01>, and meets ASTM E438, Type I, Class A requirements 3) Standardised GL-thread and matching cap system for particularly tight sealing and simple, clean pouring out. 4) Fired-on, highly durable white print 5) Suitable for long-term storage 6) Easy-to-read scale with graduation marks to estimate the content