Chemical reagent vial

An elongated vial having two opposite ends from which a first hollow lug and a second hollow lug project,

• said first lug being closed by a membrane sealingly applied on a free end portion of said first lug, wherein on said first lug there is screw engaging a cylindrical body having an enlarged free end portion extending away from said vial and provided with a funnel configuration at a central portion thereof, said central portion having a hole formed therethrough from which a tubular element extends, said element having a free edge facing and adjacent to said membrane, and having a cut-edge contour, said tubular element having an outer diameter which allows said tubular element to extend into said first lug as said body is fully screw engaged on said first lug,
• said second hollow lug having an elongated shape having an outer peripheral end and an inner free end and being closed at said free end thereof, said second lug having at least one hole formed therethrough at a position adjacent the free end of said second lug, an outer surface of said free end of said second lug having a substantially conical shape, said conical surface being further extended adjacent the outer peripheral end of said second lug, a hollow sleeve being threadedly engaged on said second lug, said hollow sleeve having an inner surface which comprises a first portion having a conical shape which sealingly abuts on said conical surface of said second lug, and a second portion having a surface which abuts said outer peripheral end as said sleeve is fully screw-engaged on said lug.