CTV-1830-RS - VIALS 300ul Fused Insert Screw 11mm Clear 100

The CTV-1830-RS RSA Brand Snap‑Top Autosampler Vial is a 300 µL clear glass vial with an integrated Fused Insert™, engineered for chromatographic applications where maximum recovery, low adsorption, and precise vial geometry are critical. Both the vial and insert are manufactured from first hydrolytic, Class A, Type 33 borosilicate glass with Reduced Surface Activity (RSA) to minimize unwanted interactions with sensitive analytes.

Integrated ceramic write‑on patches and fill lines provide durable labeling and volume reference that resist smearing or scratching when exposed to common laboratory solvents. This supports reliable identification in both routine and documentation‑driven workflows.

Bottom depths and vial heights are tightly designed and QC‑controlled to support maximum recovery while protecting autosampler needles. The RSA® Fused Insert™ is engineered to sit slightly above the vial lip, allowing improved contact with the cap septum for a more reliable seal. Unlike competitive designs, the insert is not fused to the vial bottom, eliminating stress fractures at the fusion point and helping prevent leakage.

The RSA glass chemistry does not contribute sodium ions or other surface effects that can influence pH, making these vials well suited for low‑abundance and pH‑sensitive analytes. Reduced surface activity is tested and certified for each production lot, ensuring consistent performance from batch to batch and vial to vial.

Important Use Guidance Snap caps and snap‑top vials are not generally recommended for LC‑MS applications or other critical analyses involving volatile solvents, including aqueous systems. For these applications, screw‑thread vials with properly matched caps and septa are generally preferred to reduce solvent evaporation and maintain sample integrity.

Key Features

Reduced Surface Activity Glass Chemistry

• First hydrolytic, Class A, Type 33 borosilicate glass

• Reduced surface activity minimizes analyte adsorption

• Does not introduce sodium ions or cause pH changes

Fused Insert™ Design

• Integrated clear glass insert for low‑volume work

• Insert sits above vial lip for improved septum sealing

• Not fused to vial bottom, reducing crack and leak risk

Precision Autosampler Geometry

• QC‑controlled bottom depths and heights

• Supports maximum recovery and needle safety

• Designed for consistent autosampler performance

Durable Write‑On Patch and Fill Lines

• Ceramic write‑on surface resists smearing and scratching

• Permanent fill lines for accurate volume reference

• Suitable for solvent‑exposed workflows

Why Choose RSA® 300 µL Snap‑Top Fused Insert Vials?

The CTV-1830-RS is selected when laboratories need:

• Low‑adsorbing glass for sensitive or low‑abundance analytes

• Improved recovery from very small sample volumes

• Enhanced sealing performance with snap‑top closures

• Certified lot‑to‑lot consistency in glass chemistry

• Reliable performance in demanding chromatography workflows

These vials are widely used in pharmaceutical research, regulated QC environments, and method development, where vial geometry and surface chemistry directly influence analytical results.

Typical Applications

• HPLC and UHPLC autosampling

• Low‑volume and trace‑level analysis

• pH‑sensitive compounds

• Method development and validation

• Quality control workflows