Solder Recycling Program - Qualitek's solder recycling program provides customers with a convenient method of disposal of solder dross, solder pot waste and expired (used or unused) solder paste scrap. Our recycling is performed on site so customer receive maximum return on the settlement statement. Final payout is determined by the amount of material received and recovered. A check may be issued or credit applied towards your next purchase. Green pails, lids and labels are for use with lead-free solder and Black pails, lids and labels are for use with leaded solder scrap. Do not mix solder scrap keep separated and use the labels provide for each pail.