Chromatography Vials, Big Mouth, Clear TPX Polymethypentene Limited Volume Screw Thread Vials, 10-425mm Neck Finish, 12x32mm, 700µL, 1000/CS. $194.38. Add to Cart. Chromatography Vials, Big Mouth, Black Polypropylene Limited Volume Screw Thread Vials, 10-425mm Neck Finish, 12x32mm, 500µL, 1000/CS. $194.38.