Buffers and acid donors BUFFER PB Blend of organic acids, salts and dispersing agents. Buffer and dispersing agent for polyester dyeing. ASUDOR TR Alkaline buffering system for cotton and cellulosic fibre dyeing with reactive dyestuffs. It substitutes Carbonate and/or Caustic Soda, offering an optimum pH control. BUFFER 5 Acid Buffer pH 5 - 5,5 for dyeing PES and PES/CO. BUFFER PES Acid buffer, pH 5 – 5,5. BUFFER TPC Tampón pH 7,2 - 7,4 para tintura de poliéster/algodón matiz negro con negro disperso y negro directo en el mismo baño a 130 ºC. BUFFER TAP Buffer pH 7,2 - 7,4 for dyeing black shaded PES/CO, with disperse and direct blacks at 130 ºC in only one bath. BUFFER R For disperse/reactive dyeing in only one bath (‘New Select Process). ASUDOR N-4 Acid donor for PA dyeing, final pH 4,5. ASUDOR VA-5 Acid donor for PA dyeing. Gentle curve. Specially recommendable for light shades. Final pH 5,5.