---
title: "ASTM D1505"
url: "https://mat-cs.com/astm-d1505/"
description: "This test method covers the determination of the density of solid plastics."
---

ASTM Standard

# ASTM D1505

Standard Test Method for Density of Plastics by the Density-Gradient Technique

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## Significance and Use

4.1 The density of a solid is a conveniently measurable property which is frequently useful as a means of following physical changes in a sample, as an indication of uniformity among samples, and a means of identification.

4.2 This test method is designed to yield results accurate to better than 0.05 %.

NOTE 3: Where accuracy of 0.05 % or better is desired, the gradient tube shall be constructed so that vertical distances of 1 mm shall represent density differences no greater than 0.0001 g/cm.3 The sensitivity of the column is then 0.0001 g/cm3·mm. Where less accuracy is needed, the gradient tube shall be constructed to any required sensitivity.

## Scope

1.1 This test method covers the determination of the density of solid plastics.

1.2 This test method is based on observing the level to which a test specimen sinks in a liquid column exhibiting a density gradient, in comparison with standards of known density.

NOTE 1: This test method is equivalent to ISO 1183-2.

1.3 The values stated in SI units are to be regarded as the standard.