DIN 51524 part 2 category HLP, ISO 6743/4 category HM, Denison HF-2, TP-02100 Filterability Test, Sperry Vickers M-2950-S, I-286-S, Afnor NF E 48-600, Thyssen TH N-256132, US Steel 127, SEB 181.222, VDMA 24318