The KNAUER Vials & Caps range provides a complete solution for sample preparation in HPLC/UHPLC analysis, where precision, purity, and sample integrity are critical.
Selecting the correct vial and cap combination directly impacts:
- result reproducibility
- contamination prevention
- minimization of evaporation
- autosampler performance
KNAUER offers a wide variety of configurations including:
- glass types (clear / amber)
- closure types (screw, crimp, snap)
- septa (pre-slit / non pre-slit)
- accessories (µ-inserts for small volumes)
Product Variants
Sample Vials
- Neck types:
- screw neck
- crimp neck
- snap ring
- Materials:
- clear glass
- amber glass (UV protection)
- High chemical resistance
- Compatible with micro-inserts
Caps
- Compatible with all vial types
- Options:
- pre-slit septa
- solid septa
- Optimized sealing
- Suitable for automated and manual sampling
Vial Selection Guide
Glass Color
- Amber glass
- UV protection
- ideal for light-sensitive compounds (vitamins, steroids, pharmaceuticals)
- Clear glass
- maximum visibility
- ideal for routine applications
KNAUER: Vials & Caps - Glass color
Closure Types
- Screw Neck
- resealable
- ideal for volatile samples and storage
- Crimp Neck
- tightest seal
- ideal for highly volatile samples
- Snap Ring
- tool-free handling
- suitable for short-term use
KNAUER: Vials & Caps - Closure type
Septum Types
- Pre-slit septum
- easier needle penetration
- ideal for autosamplers
- prevents vacuum formation
- Non pre-slit septum
- tighter seal
- ideal for storage and evaporation control
KNAUER: Vials & Caps - Septum type
µ-Inserts (Small Volumes)
- Reduce sample volume requirements
- Maximize recovery
- Ideal for valuable or limited samples
KNAUER: Vials & Caps - Micro inserts
