Kester TSF-6852 is a synthetic water-soluble tacky soldering flux. The synthetic ingredients eliminate naturally occurring raw materials typically found in fluxes. This maximizes lot-to-lot consistency. TSF-6852 is room temperature stable and does not require refrigeration for long-term storage. This reduces production line space for material storage and the cost of refrigerated storage. TSF-6852 has been formulated to be a drop in replacement for a variety of metallurgies including low melting point alloys, typical tin-lead eutectic alloys and the higher melting point, lead-free alloys. TSF-6852 is classified as ORH1.