Inhalable fraction: if hardwood dusts are mixed with other wood dusts, the limit value shall apply to all wood dusts present in that mixture.
Codán in-ion-análaithe: má mheasctar deannaigh chrua-adhmaid le deannaigh adhmaid eile, beidh feidhm ag an teorainnluach i dtaca le gach deannach adhmaid atá sa mheascán sin.