Catalog Number - 58807-B32

58807-B32 MICROSOLV Screw Caps are high‑quality solid polypropylene closures designed for GL32‑threaded mobile phase reservoir bottles, commonly used in HPLC, UHPLC, LC‑MS, and general laboratory workflows requiring smaller bottle formats.

These caps are ideal for sealing bottles when not in active use, helping prevent contamination and maintain cleanliness during storage or transport. The GL32 size is particularly suited for smaller mobile phase or solvent bottles, supporting compact workflows and space‑efficient lab setups.

Manufactured from durable polypropylene, these caps provide excellent chemical resistance and dependable performance in routine laboratory environments.

Solid Cap Design – Contamination Prevention

• Fully enclosed (no holes) construction

• Prevents dust, dirt, and airborne contaminants from entering bottles

• Maintains solvent and container cleanliness

• Ideal for storage when bottles are empty or between runs

✅ Recommended for clean storage and contamination control in smaller bottles

GL32 Thread Compatibility – Small Bottle Fit

• Standard GL32 threaded caps

• Designed for smaller laboratory bottles and mobile phase containers

• Provides secure and reliable sealing

✅ Ideal for compact HPLC and laboratory workflows

Polypropylene Construction – Durable & Chemical Resistant

• Manufactured from high‑quality polypropylene (PP)

• Resistant to common HPLC solvents

• Lightweight, durable, and reusable

✅ Suitable for routine analytical and lab applications

Temperature & Performance

• Maximum operating temperature: ~140 °C

• Maintains structural integrity under standard lab conditions

• Reliable for repeated daily use

✅ Designed for consistent laboratory performance

System Compatibility & Use

Commonly used with:

• GL32 HPLC mobile phase bottles

• LC‑MS small‑volume solvent containers

• Laboratory storage bottles

• Sample preparation and storage workflows

Typical Applications

• Sealing small‑volume mobile phase bottles

• Preventing contamination during storage or transport

• Protecting solvents and reagents in compact containers

• Laboratory bottle organization

• Integrated into original equipment manufacturer (OEM) product designs

Important Usage Notes

• Designed for GL32 threaded bottles only

• Not intended for solvent delivery or tubing systems

• Ensure proper tightening for effective sealing

• Inspect periodically for wear or deformation