... base, and particulate media.Not suitable for: medium containing linear or barbed, and crystallization of the media2,109 EPDM ... weak acid, alkalinot suitable for particulate medium: medium containing linear or barbed, and crystallization of the media3,120 alloy ... , acids, alkalis, not suitable for particulate media: media with linear or barbed, and crystallization of the media4,WB2 exterior mechanical ...