Astm D 4373 ((install)) Official

This test method covers the quantitative determination of the carbonate content (primarily calcium carbonate, CaCO₃) in soils, using a gasometric method. It is suitable for both fine-grained and coarse-grained soils, as well as soft rock and aggregate materials.

[ CaCO_3 + 2HCl \rightarrow CaCl_2 + H_2O + CO_2 \uparrow ] astm d 4373

Or directly from a pre-established calibration curve using pure CaCO₃. This test method covers the quantitative determination of

D4373 – 14 (or current active version: 2021) D4373 – 14 (or current active version: 2021)

Method: ASTM D4373 – 2021 Analyst: [Name] Date: [Current Date]

1. Title Standard Test Method for Rapid Determination of Carbonate Content of Soils

A calibrated manometric or volumetric device (typically a or similar gas-measuring apparatus) measures the pressure or volume of CO₂ evolved. This measurement is directly proportional to the CaCO₃ content, which is expressed as a percentage of the dry soil mass.