The Cole-Parmer Screw Cap, PP, 8 mm, Closed, Natural Rubber/TEF (98703-23) is a black polypropylene vial closure supplied with a transparent natural rubber/TEF septum. This closed 8 mm screw-cap configuration is designed to provide secure vial sealing for chromatography and laboratory sample-handling workflows and is supplied in a pack of 1000.
Key Features
- 8 mm screw-cap configuration, providing the specified closure diameter for compatible laboratory vials
- Black polypropylene construction, combining a lightweight polymer cap with the specified black colour
- Closed cap design, providing the solid-top configuration specified for this exact variant
- Natural rubber/TEF septum, supplied in the transparent septum configuration listed for 98703-23
- Designed for secure vial sealing, helping reduce sample evaporation associated with poor vial, septum and cap sealing
- Non-sterile configuration, suitable for analytical workflows that do not require sterile vial closures
- Pack of 1000 caps, supporting routine and high-throughput laboratory sample preparation
Benefits
- Help maintain sample integrity by creating a secure closure between the vial, septum and cap.
- Reduce the risk of sample loss through evaporation caused by an inadequately sealed vial.
- Support consistent autosampler workflows by using the correct cap and septum configuration without excessive tightening.
- Maintain a high-volume supply of closures for routine chromatography and analytical sample preparation with 1000 caps per pack.
Why Choose the Cole-Parmer Screw Cap, PP, 8 mm, Closed, Natural Rubber/TEF (98703-23)?
The Cole-Parmer Screw Cap 98703-23 combines an 8 mm black polypropylene closed cap with a transparent natural rubber/TEF septum for dependable vial sealing. John Morris Group supplies this verified Cole-Parmer configuration for laboratories requiring consistent vial closures for chromatography and analytical sample handling.
