BONDERITE® M-AD 130 L (known as TONER 130 FLUESSIG) is a colorless to slightly yellow metal pre-treatment liquid which adds the accelerator, nitrite, to zinc phosphate baths. It is used in spray or immersion processes. Please note: BONDERITE M products are used in the surface modification of metals and usually applied in a multi-stage process. The performance of these surface treatments depends on various factors such as the preceding cleaning or etching steps (BONDERITE C portfolio), line design or process parameters.