EcoSpold 2 · Calculation comparison

ecoinvent 3.12 cut-off, eutrophication: freshwater

A comparison of published impact results with VoLCA calculations from the same source data and the publisher’s impact factors. Points on the diagonal agree.

This page shows engine v0.13.0, which is not the newest measured. Compare the engine versions, or see the current comparisons.

Engine version: volca 0.13.0 (8c0396c, v0.13.0, linux)
Measured on: 2026-09-18

Comparison measurements and reference
Database	ecoinvent 3.12 cut-off
Source format	EcoSpold 2
Impact method collection	EF v3.1
Impact category	eutrophication: freshwater
Unit	kg P-Eq
Activities compared	20,210
Median ratio (VoLCA / published)	1.0003
Comparison band	1%
Activities outside the band	983
Share outside the band	4.86%
Verdict	Agrees: meets the agreement a release is held to
Points drawn	2,021
Largest relative deviation	+2,534.73%
Activity with largest deviation	phosphoric acid production, dihydrate process
Published reference	ecoinvent 3.12_cut-off_cumulative_lcia_xlsx.7z

Each point is one activity: what ecoinvent 3.12 cut-off published for eutrophication: freshwater (kg P-Eq), against what VoLCA computes from the same EcoSpold 2 source under the publisher's own EF v3.1 factors. The black line is equality and the grey band is 1%. 20,210 activities were compared; 983 fall outside the band, more than a picture can hold, so 1,838 of the 20,210 are drawn, evenly spaced over the published value whichever side of the band they fall, and the 183 of the 200 farthest from equality that this walk missed are added. Where several fall on one spot, at most three markers are drawn there, since a fourth would not darken it. Median ratio 1.0003, 4.86% outside the band. This meets the agreement a release is held to: at most 5% of activities outside the band and a median ratio inside it.