D1343-95 – Standard Test Method Technical Guide

ASTM D1343-95 (Reapproved 2019), under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, provides a straightforward ball-drop method for determining the viscosity of cellulose derivatives in solution. This test is essential for characterizing materials intended for processing methods like extrusion, molding, spraying, or brushing. The method is applicable for solutions having viscosities greater than 10 poises (P). The values stated in SI units are regarded as the standard in this test method.

⚙️ Apparatus Configuration and Test Specimens

The physical setup for the ball-drop test is critical for repeatability. The core of the apparatus is a glass-walled constant-temperature water