---
title: "ASTM D2621"
url: "https://mat-cs.com/astm-d2621/"
description: "This test method covers the qualitative characterization or identification of separated paint vehicle solids by infrared spectroscopy within the limitations of infrared spectroscopy."
---

ASTM Standard

# ASTM D2621

Standard Test Method for Infrared Identification of Vehicle Solids From Solvent-Reducible Paints

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## Significance and Use

5.1 The ability to qualitatively identify paint vehicles is useful for characterizing unknown or competitive coatings, for complaint investigations, and for in-process control.

## Scope

1.1 This test method covers the qualitative characterization or identification of separated paint vehicle solids by infrared spectroscopy within the limitations of infrared spectroscopy.