1. Lukluk gut: Lukluk gut long 'fiberboard' long lukim olsem em i wankain tik na strong. Sekim tu sapos i gat ol bagarap olsem bagarap, 'delamination', 'bulges', o 'carbonization' long ol arere na kona.
2. Water Immersion Test: Sapos inap, katim liklik hap bilong 'fiberboard' na putim insait long 20 digri wara inap 24 aua. Lukluk long senis bilong 'thickness' na ol liklik 'bulge' i kamap taim yu putim insait long wara bilong painimaut sapos em i no inap long kisim wara.
3. Tes bilong smel: Skelim smel bilong 'fiberboard' long smel. Sapos strongpela smel i save soim olsem 'formaldehyde' i kamap planti, na dispela i save bagarapim wok bilong bod long lukautim envairomen.