Transformer oil sampling bottles made from seamless stainless steel 304 grade , provided with filling and drain valves also of stainless steel 304 grade . All other accessories like nipples etc are also made of stainless steel 304 grade Capacity - 0.5, 0.75, 1.0, 1.5 & 2.0 Ltrs.Higher capacity and stainless steel 316 grade material on reques