The invention relates to the use of custom color inks in printing. A customer may be offered membership into a payment plan that allows the customer to pay past due penalty fees included in a balance associated with the customer’s credit card account. Preferable acidic group is carboxylic acid group, sulfuric acid group and phosphoric acid group. Some of the pass-through interconnect conductors are connected by programmable elements to the address, data and control signal lines of the SRAM blocks, while other pass through the SRAM blocks with out being further connected to the SRAM bussing architecture. The inflow-side end of the outflow pipe is surrounded by a siphon pipe which closes the outflow pipe on the top side and which forms an annular duct for the inflow of water, this annular duct issuing into the immersion cup below the immersion pipe. This arrangement comprises at least one light source for simultaneously illuminating the specimen points with excitation light, and detection means, comprising detection elements, for simultaneously detecting the fluorescent light from the individual specimen points.