About InVivoPure pH 6.5 Dilution Buffer InVivoPure pH 6.5 Dilution Buffer Specifications Endotoxin<0.5 EU/mL (<0.0005EU/μL)Endotoxin level is determined using an LAL gel clotting test Sterility0.2 μM filtered Concentration1X Volume50 ml Composition16 mM Na2HPO4 23 mM NaH2PO4 136 mM NaClThis buffer does not contain calcium, magnesium, phenol red, or preservatives such as azide.Keep contents sterile. Open only in a biological safety cabinet. Storage4°C