Vials, Septa

Screw seals ND13 are made of PP and have a 13-425 thread. They have a 8.5 mm centre hole or are closed. Screw seals are supplied with fitted septa made of a variety of materials or without any septa.

These septa are temperature-resistant from -60 °C to 200 °C and have better purity than septa made of natural rubber, butyl or RedRubber. However, they have less effective resealability properties and are therefore more suitable for single-injection applications.

Septa with a double-sided PTFE coating show a very low particle formation during penetration.

Accessories Screw neck vials ND13 Alternative With natural rubber / TEF septa Alternative With butyl / PTFE septa Alternative Without septa Alternative With RedRubber / PTFE septa

The septa are especially designed for the screw caps with GL thread.

The shell vials made of clear or amber first hydrolytic class glass come in a set with transparent PE plugs. The star-shaped diaphragm in the plug facilitates easy penetration.

Shell vials made of plastic are a shatter-proof alternative to glass vials. They also come with a PE plug.

This easy-to-use, inexpensive vial/plug combination is suitable for non-critical analyses, especially in the field of HPLC.

Accessories Vial racks, acrylic Accessories Vial racks, PP Accessories ND13, ND18, ND20 Headspace, ND24 (EPA) Alternative Plastic, PP

The LABSOLUTE® kits ND11 contain shrink-wrapped crimp neck vials ND11 made of clear or amber first hydrolytic class glass and corresponding crimp caps made of clear lacquered aluminum with 5.5 mm centre hole.
Septa with a double-sided PTFE coating show a very low particle formation during penetration.

Alternative Kits ND8 Alternative Kits ND9 Alternative Kits ND9, certified

Crimp and headspace seals ND20 are made of aluminium and are supplied with fitted septa made of a variety of materials. There are the following different types of caps available:

Plain caps with a 10 mm center hole. These caps are suitable for standard applications. They are available in several colours on request.

Clear lacquered caps, so called headspace caps, with a special score line that breaks when the internal pressure reaches 3.0 ± 0.5 bar. The excess pressure is then released, and the risk of the vial exploding can be avoided.

Clear lacquered centre tear-off caps and complete tear-off caps. These caps are available in several colours on request.

Gold lacquered, magnetic crimp caps with 5 mm centre hole to be used with CE HS500/HS800, CTC 500, as well as Fisons HS500 / HS800 instruments.

Gold lacquered, magnetic crimp caps with 8 mm centre hole to be used with CTC Combi PAL instruments.

Red lacquered, magnetic bimetal crimp caps with 8 mm centre hole to be used with CTC Combi PAL instruments.

These septa, made of silicone white / PTFE beige, are temperature-resistant from -60 °C to 200 °C. They are 3.2 mm thick and have a hardness of 45° shore A. They have better purity than septa made of natural rubber or red rubber. However, they have less effective resealability properties and are therefore more suitable for single-injection applications.

Due to their high cleanliness, they are especially used for critical and sensitive analysis.

These seals correspond to competitor HT liner!

Accessories Crimping tools Accessories Decapping tools Accessories Crimping tools Accessories Decapping tools Accessories Crimping tool, pneumatic, manual Accessories Crimp neck and headspace vials ND20 Accessories Crimp neck and headspace vials ND20 / ND40, special dimensions Alternative With chloro-butyl septa Alternative With bromo-butyl / PTFE septa Alternative With bromo-butyl / PTFE septa, Pharma-Fix Alternative With silicone / PTFE septa, Ultraclean Alternative With silicone / aluminium septa Alternative Without septa Alternative With Viton septa

The choice of the right septa depends on the application. Many septa are PTFE coated on one side. PTFE is highly resistant against many chemicals and forms an inert border between the sample and the base material of the septa.

The septa's base material has various physical and chemical properties, like temperature resistance, resealability, cleanliness, hardness and thickness.

Natural rubber/TEF

• Temperature-resistant from -40 °C to 120 °C
• Excellent resealability properties
• Inexpensive for standard applications in the fields of GC and HPLC

RedRubber/PTFE

• Temperature-resistant from -30 °C to 110 °C
• Softer and therefore easier to penetrate than natural rubber
• Not as good resealability properties as natural rubber
• Higher chemical purity than natural rubber
• Inexpensive for standard applications in the fields of GC and HPLC

Butyl/PTFE

• Temperature-resistant from -40 °C to 120 °C
• Higher chemical purity than natural rubber and RedRubber

Silicone/PTFE

• Temperature-resistant from -60 °C to 200 °C
• More suitable for single-injection applications
• Much higher chemical purity than natural rubber and RedRubber
• Very low particle formation during penetration in case of double-sided PTFE coating
• Best for the thin and fragile needles of the autosampler
• Best for critical analysis (UltraClean quality)

Septa with a double-sided PTFE coating show a very low particle formation during penetration.

Which septum fits which cap?
Diameter of the septum	Cap
8 mm	8 mm screw caps (ND8) 8 mm crimp caps (ND8)
9 mm	9 mm short thread screw caps (ND9)
10 mm	10 mm screw caps (ND10)
11 mm	11 mm crimp caps (ND11)
12 mm	13 mm screw caps (ND13)
13 mm	13 mm crimp caps (ND13)
16 mm	18 mm crimp caps (ND18)
17.5 mm	18 mm precision thread screw caps (ND18)
19.5 mm	22 mm PE caps
20 mm	20 mm crimp caps

Accessories Without septa

Crimp neck vials and micro-vials ND8 are available in clear and amber first hydrolytic class glass. They can be sealed with 8 mm crimp caps, 9 mm PE caps or 8 mm push-on caps. The micro-vials often require an adapter so that they can be used in an autosampler.

These vials are especially used with autosamplers made by Beckman, CTC, Gilson, Knauer, Shimadzu, Spark, Varian and VWR/Hitachi.

Accessories With natural rubber / TEF septa Accessories With RedRubber / PTFE septa Accessories With silicone / PTFE septa Accessories Special seals for crimp neck ND8 Accessories Crimping tools Accessories Decapping tools Accessories Crimping tools Accessories Decapping tools Accessories Vial racks, acrylic Accessories Vial racks, PP

Screw seals ND15 are made of PP and are supplied without or with fitted septa made of a variety of materials. They have a 15-425 thread, a 9 mm centre hole or are closed.

Screw seals ND18 are made of PP and are supplied with or without fitted septa made of a variety of materials. They have a 18-400 thread, a 12 mm centre hole or are closed.

ND15 seals are suitable for items 7.616 898, 7.618 935, 7.616 655 and 7.618 936.
ND18 seals are suitable for items 7.616 899 and 7.616 139.

These ND18 screw caps with 18-400 thread are not compatible with ND18 precision thread vials !

Suitable septa with a diameter of 16 mm (only for ND18 screw caps) made of different materials are available on request.

Accessories Septa, 16 mm Accessories Screw neck vials ND15 / ND18 Alternative With natural rubber / TEF septa Alternative With butyl / PTFE septa Alternative With silicone / PTFE septa

Crimp and headspace seals ND20 are made of aluminium and are supplied with fitted septa made of a variety of materials. There are the following different types of caps available:

Plain caps with a 10 mm center hole. These caps are suitable for standard applications. They are available in several colours on request.

Clear lacquered caps, so called headspace caps, with a special score line that breaks when the internal pressure reaches 3.0 ± 0.5 bar. The excess pressure is then released, and the risk of the vial exploding can be avoided.

Clear lacquered centre tear-off caps and complete tear-off caps. These caps are available in several colours on request.

Gold lacquered, magnetic crimp caps with 5 mm centre hole to be used with CE HS500/HS800, CTC 500, as well as Fisons HS500 / HS800 instruments.

Gold lacquered, magnetic crimp caps with 8 mm centre hole to be used with CTC Combi PAL instruments.

Red lacquered, magnetic bimetal crimp caps with 8 mm centre hole to be used with CTC Combi PAL instruments.

These dark grey septa are temperature-resistant from -40 °C to 120 °C and have excellent chemical properties. They are 3.0 mm thick and have a hardness of 55° shore A. Because of the missing PTFE coating, the pure butyl septa are an economic alternative for non-critical analysis.

Accessories Crimping tools Accessories Decapping tools Accessories Crimping tools Accessories Decapping tools Accessories Crimping tool, pneumatic, manual Accessories Crimp neck and headspace vials ND20 Accessories Crimp neck and headspace vials ND20 / ND40, special dimensions Alternative With bromo-butyl / PTFE septa Alternative With bromo-butyl / PTFE septa, Pharma-Fix Alternative With silicone / PTFE septa, Ultraclean Alternative With silicone / PTFE septa, HT quality Alternative With silicone / aluminium septa Alternative Without septa Alternative With Viton septa

Screw seals ND13 are made of PP and have a 13-425 thread. They have a 8.5 mm centre hole or are closed. Screw seals are supplied with fitted septa made of a variety of materials or without any septa.

These septa are temperature-resistant from -40 °C to 120 °C and ideal for multiple injections thanks to their excellent resealability properties.

Accessories Screw neck vials ND13 Alternative With butyl / PTFE septa Alternative With silicone / PTFE septa Alternative Without septa Alternative With RedRubber / PTFE septa