plastic coupons after being soiled with autoclave tape adhesive residue prior to being cleaned
stainless steel coupons after being soiled with autoclave tape adhesive residue prior to being cleaned
glass coupons after being soiled with autoclave tape adhesive prior to being cleaned
picture of anodized aluminum coupons after being soiled with autoclave tape adhesive, but prior to being cleaned
4 substrates of 3 coupons each soiled with autoclave tape adhesive after being cleaned
set of coupons after being cleaned using ink removers
set of coupons after being soiled with sharpie
set of coupons prior to being soiled with sharpie