Walter 54-A 023 Cleaning/Neutralizing Solution, 500mL (Box of 12) Walter Surface Technologies Sale! from 16200 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Neutralizing Solution, Surfox-N, 500mL (16.9 oz) SKU:WLT 54A023