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GRADISTAT v9.1 Free: The Definitive Grain Size Analysis Tool
If you are working on your thesis or a research project involving sediment analysis, checking out is a must.
Enter , a renowned Microsoft Excel-based package developed by Simon Blott for the rapid analysis of grain size data. The GRADISTAT v 9.1 free version (and its slightly older, widely circulated predecessor v8.0) remains a staple in laboratories worldwide due to its efficiency and accuracy. What is GRADISTAT?
Classification into groups like "Sandy Mud" or "Slightly Gravelly Sand" using the modified Udden-Wentworth scale. gradistat v 91 free
A PC or Mac capable of running Microsoft Excel (2010 or newer recommended).
If you used physical sieves, gather the aperture sizes in millimeters or phi (
The original versions were distributed freely for academic and non-commercial use, making it accessible to students and researchers on a budget. Key Features of the GRADISTAT Software GRADISTAT v9
Measures the peakedness of the distribution curve. Step-by-Step Guide: Running a Particle Analysis
Gradistat v 9.1 provides a comprehensive suite of statistical outputs based on both the Folk and Ward method and the Method of Moments. When you process your data, the software automatically generates:
It classifies the sediment based on its Folk & Ward description (e.g., "poorly sorted, fine sand"). 4. Interpretation What is GRADISTAT
Assemble your raw data. For sieve analysis, this is typically the weight of sediment (in grams) retained on each sieve screen. For laser diffraction, this is the percentage volume of each particle size class. 2. Inputting Data Open the GRADISTAT Excel file. Input the sieve screen mesh sizes (in mm or phi).
This article provides everything you need to know: what Gradistat v 9.1 is, its key features, how to get it legally for free, how it compares to modern alternatives, and a step-by-step guide to using it.
