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EcoSpold 1 · Calculation comparison

BAFU 2025 v2, Mineral resources

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.

Engine version
volca 0.14.0 (bd7e64a, v0.14.0, linux)
Measured on
Comparison measurements and reference
DatabaseBAFU 2025 v2
Source formatEcoSpold 1
Impact method collectionEcological Scarcity 2021
Impact categoryMineral resources
UnitUBP
Activities compared11,560
Median ratio (VoLCA / published)0.9975
Comparison band1%
Activities outside the band1,612
Share outside the band13.94%
VerdictDisagrees: misses the agreement a release is held to
Points drawn2,089
Largest relative deviation-98.47%
Activity with largest deviationEpoxy resin, liquid, disaggregated data, at plant {RER}
Published referenceBAFU-2025 version2_LCIA Results.xlsx
BAFU 2025 v2, Mineral resources
Each point is one activity: what BAFU 2025 v2 published for Mineral resources (UBP), against what VoLCA computes from the same EcoSpold 1 source under the publisher's own Ecological Scarcity 2021 factors. The black line is equality and the grey band is 1%. 11,560 activities were compared; 1,612 fall outside the band, more than a picture can hold, so 1,927 of the 11,560 are drawn, evenly spaced over the published value whichever side of the band they fall, and the 162 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 0.9975, 13.94% outside the band. This misses the agreement a release is held to: at most 5% of activities outside the band and a median ratio inside it.