Worldwide Glass Resources, Inc. - Vial Features

Technical Information: Vials and Inserts : Vial Features

Vial Features

Neck Design (Finish)

Worldwide Glass Resources offers vials with the following finishes:

Finish
Diagram
Description

Shell Vial Finish

Shell Vial Finish
Shell Vial Finish

The Shell Vial Finish is also called a Fire-Polished Neck, where the opening of the vial has the same dimensions as the walls of the vials.

Flat Crimp Finish

Flat Crimp Finish
Flat Crimp Finish

The Flat Crimp Finish is available in 11 mm for the 12x32 mm dimension, and in 20 mm for the headspace vials. 

Tapered Crimp Finish

Tapered Crimp Finish
Tapered Crimp Finish

Alternatively, a Tapered Crimp Finish is available in 20 mm for the headspace vials.

Snap Finish

Snap Finish
Snap Finish

The Snap Finish is available in 11 mm for the 12x32 mm dimension and is compatible with both crimp closures and PE snap closures.

8-425 Screw Thread Finishes

8-425 Finish
8-425 Finish

The 8-425 Screw Thread Finish is a standard screw thread finishes as outlined by GPI.  The threads run down to the shoulder of the vial. The 8-425 Screw Thread Finish has a Standard Opening.

9 mm Screw Thread

9 mm Finish
9mm Finish

The 9 mm Short Screw Thread finish is designed for use with robotic arm autosamplers. The threads do not run down to the shoulder of the vial. The 9 mm Screw Thread has a Large Opening.

10-425 Screw Thread Finishes

10-425
10-425 Finish

The 10-425 Screw Thread Finish is a standard screw thread finishes as outlined by GPI.  The threads run down to the shoulder of the vial.  The 10-425 Screw Thread Finish has a Large Opening.

13-425 Screw Thread Finishes

13-425 Finish
13-425 Finish

The 13-425 Screw Thread Finish is standard screw thread finishes as outlined by GPI. The threads run down to the shoulder of the vial. The 13-425 Screw Thread Finish has a Large Opening.

18 mm Screw Thread Finish

18 mm Finish
18 mm Finish

The 18 mm Screw Thread Finish is used with Headspace vials. The thread runs down to the shoulder of the vial.


GPI (Glass Packaging Institute; formerly GCMI, Glass Container Manufacturers Institute) is responsible for establishing and issuing uniform standards regarding the types of finishes produced by American Glass Manufacturers.  When a cap is designated 8-425, the cap is 8 mm in diameter and uses the 425 style thread.  Because the "H" dimension is not designated in the size code, the chart below will assist in differentiating styles of finishes having similar thread diameters.


"T" Dimension

"H" Measurements in millimeters (mm)

 

400

410

415

425

430

8

 

 

 

6.52

 

10

 

 

 

6.86

 

13

 

 

11.22

7.50

 

15

 

 

13.90

7.50

 

18

9.05

13.03

15.42

 

15.34

20

9.50

13.82

18.59

 

15.34

22

9.50

14.60

21.01

 

15.34

24

10.25

16.15

24.05

 

16.43

28

10.25

17.73

27.23

 

18.39

33

9.85

 

 

 

19.69

38

9.85

 

 

 

24.03

38

 

 

 

 

22.00

Bottom Design

Worldwide Glass Resources offers vials with the following bottom designs:

Bottom Design
Diagram
Description

Flat Bottom Design

Flat Bottom Design
Flat Bottom Design

Most vials are made with a Flat Bottom Design.

Radius Bottom Design

Radius Bottom Design
Radius Bottom Design

Headspace vials are also available in a Radius Bottom Design, which assists in correctly orienting the vial within a rack.

Round Bottom Design

Round Bottom Design
Round Bottom Design

Some vials are made with a Round Bottom Design.

Inner Design

Besides the usual flat inner designs, Worldwide Glass Resources offers vials with a High Recovery Inner Design:

Inner Design
Diagram
Description

High Recovery Inner Design (HRV)

HVR
HRV

Vials are also available with a High Recovery Inner Design (HRV).  The outer bottom is flat or has a radius, while the inner design is conical.  These vials are designed for maximum sample recovery.