[harryn]

Hi,

There are commerical acid carts like this, and they were commonly used in the semiconductor industry. It's not quite as common anymore as moving high purity acid into a clean room and around the area is challenging.

As the volume as acid usage grew, many have installed bulk chemical distribution piping. In those, the acid drums are stored in an H1 or H2 area, and the acids are pumped through double contained lines to the stations in the work areas. The acid can be pumped either with diaphram pumps or air pressure. The plumbing is usually teflon tubing inside of PVC pipe (secondary containment)

These can get pretty sophisticated in their function, but a common method is to have a small plc at each work area. The operator pushes a button, the acid is drained, then refilled automatically, with redundant sensors to make sure nothing overflows.

You can also set them up to "top off", or add trickles of chemical for replenishment.

The largest cost is actually the pipe and installation, the rest of the systems used to run about $ 50 - 75 K / chemical.