KNAUER Vials & Caps

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