Tender For Supply Of 1. Centrifugal Machine (Gerber Test), Electric Driven, 12 Test Equiped With Timer, Brake Control Etc. 2. Lock Stopper, Isi/ Multi-Metal Marked Gerber Type, Made Up Of Brass Cap Head, Workmanship Guaranteed, Packed In One Dozen In One Boxes 3. Butyrometer Shaking Stand, Made Of Plastic, Size: 12(L) X 5(W), 6.5(H), No. Of Holes-24.