Glass cylinder with prominent blue markings in the ml graduations, mounted between 3/4" thick CPVC (Corzan) flanges and viton "O" ring seals with an acrylic outer shield sealed with buna "O" rings, all bolted together with stainless steel rods.  Options include NPT, BSPT or flanged  connections and EPDM wetted "O" rings. Standard sizes 100 - 10,000 ml. For larger sizes, contact factory for pricing.