PTFE-lined caps 10. Tubes, polypropylene, disposable screw-top, 15 mL. Polypropylene bottles and caps may also be used for . sample collection. 11. Metal spatula 12. Volumetric flasks: 10, 50, 100 and 200 mL. 13. Autosampler vials, amber, with caps and septa. 14. Disposable glass pipets. 15. Sintered glass filtration apparatus and 1-Liter side-