This column features all borosilicate glass construction with an 85 ml reservoir.

Ref: Method 4500-NO3-E of the Standards Methods for the Examination of Water and Wastewater. Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.

The glass wool plug and PTFE tubing at the bottom of the column are held securely in place by a BEVEL-SEAL™ connection, facilitating easy cleaning and assembly. PTFE BEVEL-SEAL™ stopcock connector is included as a metering valve to control flow rate. Stopcock has a plug (glass wool not included).