D 4373 — Astm

| Sample ID | Dry Mass (g) | CO₂ Reading (mL) | CaCO₃ Equivalent (%) | |-----------|--------------|------------------|------------------------| | S-01 (CL) | 5.00 | 38.5 | 10.2 | | S-02 (GW) | 10.00 | 122.0 | 32.8 |

Standard Test Method for Rapid Determination of Carbonate Content of Soils astm d 4373

The method relies on the chemical reaction between carbonates present in the soil and hydrochloric acid (HCl). The reaction produces carbon dioxide (CO₂) gas. | Sample ID | Dry Mass (g) |

| Feature | ASTM D 4373 (Calcimeter) | Standard Volumetric/Titration Methods | | :--- | :--- | :--- | | | Minutes per sample | Hours per sample | | Complexity | Low (simple mechanics) | High (requires chemical titration skills) | | Portability | High (can be used in field labs) | Low (requires wet lab setup) | | Accuracy | Approximate (Good for engineering) | High (Good for pure chemistry) | | Cost | Low equipment cost | Higher glassware/reagent cost | astm d 4373

The test operates on a simple acid digestion principle: