The Cole-Parmer 9 mm Short-Thread Cap, Black, PTFE/Silicone/PTFE (98703-43) is an open polypropylene screw cap designed for compatible short-thread chromatography vials. This black 9 mm configuration is supplied with a red PTFE/silicone/PTFE septum and is packaged in quantities of 1000.
Key Features
- 9 mm short-thread screw design, providing the specified closure format for compatible short-thread vials
- Open cap configuration, distinguishing this exact variant from closed closure options
- Black polypropylene construction, combining the specified cap material and colour for straightforward identification
- Red PTFE/silicone/PTFE septum, providing the specified three-layer septum construction for this configuration
- PTFE laminated on both sides of silicone, helping prevent septum coring during needle penetration
- Designed for short-thread vials, providing the intended fit within compatible chromatography vial systems
- Non-sterile supplied format, matching the manufacturer specification for this cap and septum combination
- Pack of 1000 closures, supporting routine and high-throughput chromatography sample preparation
Benefits
- Help minimise sample evaporation by maintaining an appropriate vial, septum and cap seal.
- Reduce septum deformation from overtightening, helping protect autosampler needles during routine operation.
- Help reduce coring through the PTFE/silicone/PTFE septum construction.
- Match compatible short-thread chromatography vials with a clearly defined 9 mm open screw-cap configuration.
Why Choose the Cole-Parmer 9 mm Short-Thread Cap, Black, PTFE/Silicone/PTFE (98703-43)?
The Cole-Parmer 98703-43 combines a black polypropylene 9 mm short-thread cap with a red PTFE/silicone/PTFE septum designed to help reduce coring and support secure vial sealing. John Morris Group supplies this pack of 1000 for laboratories requiring a defined closure solution for compatible short-thread chromatography vials.
