directed to fig1 which is a perspective view drawing of a liquid container 2 with plural level indicators 14 16 18 according to an illustrative embodiment of the present invention this container 2 is an example of a fluid storage bin suitable for use in pharmaceutical processing and storage the container 2 is fabricated with an exterior frame 4 which comprises plural stainless steel structure shapes such as rectangular tubing and angle iron shapes the walls 6 are commonly fabricated from stainless steel sheet or plate stock as such the interior of the container 2 is smooth and suitable from housing a polymeric bag type liner without risk for damage or puncture this exemplary processing bin 2 comprises a pair of access doors 8 which swing open 10 for access to the interior of the bin 2 the top of a polymeric bag 12 is visible at the open top of the container 2 as the polymeric liner 12 is filled and emptied the unfilled portion of the polymeric bag moves upwardly and downwardly with the level of the liquid contained therein of course the static pressure of the liquid displaces the polymeric liner 12 firmly against the walls 6 of the bin 2 this figure illustrates the use of level indicators of the present invention including two level indicators 14 16 mounted in the wall 6 of the bin 2 and one level indicator 18 installed in the door 8 of the bin 2 the design and function of the level indicators will be more fully described hereinafter reference is directed to fig2 a and 2b.