12/8/2021 · Kinesis KX EPA vials are available in 20, 30, 40 and 60ml sizes, suitable for water or soil samples. They are made of chemically inert Type I borosilicate glass, in either clear, or amber for light sensitive samples. EPA (VOA/VOC) vials are 24mm screw top and suitable caps are sold separately. EPA vials can also be used as general storage vials.