WPI-g-00058870–120 g/m²Virgin kraft63% confidence
BASE APER.
Other paper grade. Permanent ID WPI-g-000588 — verified, source-traced, free.
GSM 55
55g/m²
lighter
GSM 70 · this
70g/m²
WPI-g-000588 · standard
GSM 100
100g/m²
heavier
01
Canonical specification
Basis weight
70–120g/m²
Fiber source
Virgin kraft
other
Paper type
other
Confidence
63%
source: wpi
WPI ID
WPI-g-000588
Slug
base-aper
Last updated
2026-04-18
GSM range
70–120g/m²
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