Restek Topaz Single Taper Inlet Liner for Shimadzu GC, 3.5 mm x 5.0 mm x 95 mm, pack of 5, 23336

The Restek Topaz Single Taper Inlet Liner represents a truly premium-class gas chromatography system solution for reproducible sample injection and residue-free vapourisation in capillary gas chromatography (GC). When analysing trace components in complex sample matrices in environmental, food, pharmaceutical or forensic laboratories, the injection system is the most critical interface. Undesirable adsorption effects or thermal degradation of sensitive analytes on active surfaces must be prevented in a manner that is gentle on the material and ensures process reliability. Thanks to the groundbreaking Topaz deactivation technology, this liner offers unrivalled chemical inertness. Designed for split and splitless operation on Shimadzu gas chromatographs, this consumable guarantees the highest validity of measurement results, minimises peak tailing and maximises signal-to-noise ratios even with labile compounds.

Geometric flow dynamics and sample focusing

The physical design of this liner is based on a precisely calculated single-taper geometry at the lower end. This taper acts as a fluid-dynamic barrier that focuses the expanding sample vapour directly onto the head of the capillary column. This effectively blocks any transient backflow of the sample vapour mixture (backflash) towards the injection head or septum. A precisely positioned portion of high-purity quartz wool is also placed at the lower end of the liner. This quartz wool fulfils a dual function: it serves as a mechanical filter for non-volatile matrix components to protect the column, whilst simultaneously increasing the hot surface area to force the instantaneous and homogeneous evaporation of liquid droplets.

Topaz Premium deactivation for uncompromising inertness

The material-science cornerstone of the Restek Topaz Liner is the state-of-the-art chemical deactivation process carried out in the gas phase. In conventional glass liners, free silanol groups on the quartz glass surface can trigger irreversible adsorption or catalytic degradation reactions of analytes such as pesticides, phenols or amines. Topaz Premium deactivation completely blocks these active sites and creates a high-purity, inert passivation layer. Every production batch undergoes strict quality controls and is tested using sophisticated probe molecules. For laboratory managers and analytical specialists, this means a drastic reduction in system failures and extended maintenance intervals for GC injectors.

Precise system compatibility and laboratory integration

The dimensions – 3.5 mm internal diameter, 5.0 mm external diameter and 95 mm total length – are precisely matched to the geometric tolerances of Shimadzu injection systems. The liner ensures a perfect fit in split/splitless injectors and prevents leaks in the carrier gas flow. Supplied in a practical, contamination-protected pack of five, it ensures rapid availability for routine replacement as part of preventative quality management.

Technical details

Geometry & Materials Science

• Liner type: Single Taper (single taper at the lower end)
• Base material: High-purity borosilicate/quartz glass
• Deactivation: Restek Topaz Premium deactivation (maximum inertness)
• Packaging unit: Pack of 5 (individually protected packaging)

Dimensions & Tolerances

• Inner diameter (ID): 3.5 mm
• Outer diameter (OD): 5.0 mm
• Total length: 95 mm

Packing features & additives

• Matrix protection: High-purity quartz wool integrated
• Position of the wool: At the bottom
• Injection modes: Optimised for splitless and split injections

Instrument system compatibility

• Instrument manufacturer: Shimadzu gas chromatographs (GC)
• Suitable for models: Shimadzu GC-17A, GC-2010, GC-2014 and GC-2030

Contents

• 5 x Restek Topaz Single Taper Inlet Liners with quartz wool at the lower end (MPN: 23336)
• 1 x Batch-specific quality certificate

Individual requirements & accessories

To ensure a gas-tight and leak-free installation of the liner in the Shimadzu injector, the use of high-quality sealing rings is essential and helps to protect the materials. Our chromatography range includes suitable Viton O-rings for standard applications as well as high-temperature-resistant graphite seals for demanding thermal profiles. To safeguard your sample chain, we also recommend the regular replacement of the injection septum (e.g. Restek Thermolite septa) and the use of ultra-pure carrier gas filters to permanently prevent the ingress of moisture or oxygen into the GC system. Please make use of our technical procurement service to optimally tailor your GC infrastructure.