The recovery of noble metals or those that are extremely toxic, can also be undertaken by continuous electrolysis in a "dead" rinsing bath.

The rinsing device permits an effective rinsing with less rinsing water.

The dehydrating bath (10) includes dehydrating trough (11), dehydrating agent (12) and recirculating pump (13), the rinsing bath (20) includes a rinsing trough (21) and rince liquid (22).

A standard flush program is stored in said control.

The invention provides for a flush control (11) which acts on the flush valve (2) and the flush water valve (10) or flush water pump of the individual toilets (1) and can be actuated via an actuating means (12) assigned to the toilet concerned.

The rinse phase is composed of a fresh- water rinse phase and a steam rinse phase.

The resource-conserving use of the rinse water is accomplished according to the invention by way of a cascaded return of rinse water from the last rinse step to the first rinse step.

A final rinse (second rinse) is conducted during extraction of excess water.

The flushing path includes a first and second flushing coupler.

Rinsing the substrate contaminates the rinse water with the copolymer.

Rinse liquid from a second rinse tank in the P6 step is reused.

The reactor can be flushed with a flushing gas by means of a flushing arrangement.

The method comprises the steps of rinsing with water, rinsing with a sodium hydroxide solution and second rinsing step with water.

Said (oxidized) thioethers are especially suitable for use as surfactants having rinse aid function (rinse aid surfactants).

The flush diverter may include a dispense position and a flush position.