The IDEX 2 mL Stainless Steel Sample Loop for 7725/7725i Valves (7755-028; Cole-Parmer item 02016-57) is designed for compatible chromatography injection valves and provides a nominal 2 mL sample volume. Manufactured from 316 stainless steel, it uses 1/16 in OD x 1 mm (0.040 in) ID tubing with a 30° port angle and is supplied with two ferrules and two nuts.
Key Features
- 2 mL nominal sample volume, providing the verified capacity for this sample loop configuration
- Designed for 7725 and 7725i valves, with the current IDEX listing also referencing 7725 and MXII valve compatibility
- 316 stainless steel construction, providing high pressure resistance and low permeability
- 1/16 in outside diameter tubing, with a 1 mm (0.040 in) internal diameter
- 30° port angle, matching the connection geometry required for this valve configuration
- Square-cut, burr-free tube ends, supporting a firm and flush connection to valve ports
- Unswaged fittings, allowing the tubing to be fully bottomed in the injector port before the ferrule is swaged
- Two ferrules and two nuts supplied, providing the required connection hardware with the loop
Note: This product has been listed as discontinued by the manufacturer, with no direct substitute currently identified. Contact John Morris Group to confirm current availability or to discuss suitable alternatives.
Benefits
- Supports controlled sample loading and injection using a defined nominal 2 mL loop volume.
- Helps achieve a secure, flush valve connection through carefully finished tubing ends.
- Allows correct tubing placement before ferrule swaging because the fittings are supplied unswaged.
- Provides a durable, low-permeability stainless steel fluid path for chromatography workflows.
- Simplifies installation by supplying the ferrules and nuts required for connection.
Why Choose the IDEX 2 mL Stainless Steel Sample Loop for 7725/7725i Valves (7755-028)?
The IDEX 7755-028 sample loop combines a nominal 2 mL capacity, 316 stainless steel construction and the verified tubing dimensions required for compatible 7725/7725i valve applications. Its 30° port geometry, burr-free ends and unswaged fittings support correct installation and dependable sample handling. As the manufacturer now lists this part as obsolete, contact John Morris Group to confirm availability or discuss an appropriate alternative.
