Certified to contain less than 20 particles per ml at 0.3µm and larger. Bottles double-bagged under laminar flow hood. Leakproof. Certificate of analysis included in each case. Trace metal concentrations certified to ppb levels. Metals certified to (µg/L) ppb levels <0.20 Hg, <0.5 Be, <1.0 As, Cd, Pb, <2.0 Sb, Se, <5.0 Ag, Co, Cr, Cu, Mn, Th, V, <10 Ba, Ni, Zn, <50 Mg, <75 Al, <100 Ca, Fe, K, Na. Leakproof. LDPE bottle with PP screw cap. | 
