MK Part Code: K182 WHI. MK Logic Plus. Logic Plus products are made from a high grade thermosetting material (Urea Formaldehyde) which has an inherent antimicrobial property. In recent independent tests, the Logic Plus products were equal to, or exceeded, competitor ’Anti-Bac’ products when tested for resistance to MRSA, E-Coli, Salmonella and Klebsiella Pneumonia e.