Test for Lead Contamination in Solder and Metal Alloys
Lead Solder has been used in pipe joints for many years, although older homes are more at risk. In 1986, the use of lead solders in the excess of 0.2% were banned from use, however the lowest concentration of lead found in household solder is 37%. LeadCheck® Swabs will indicate lead in solder at 2% or higher. LeadCheck® Swabs will not turn pink when testing 0.2% or "lead free" solder.
Supplies
- LeadCheck® Household Lead Test Kit
- Object to be tested for lead
Steps
- Wipe the surface dirt off the solder joint of your pipe with a paper towel or cloth.
- Rub the solder joint with an emery board or rough up the surface with a piece of sandpaper.
- Activate the LeadCheck® Swab according to directions.
- Squeeze the swab until a drop of yellow liquid appears. Drop one drop of the liquid onto the solder surface.
- Touch, DO NOT RUB, the swab tip to the wet solder surface and dab gently for 10 seconds.
- If the swab tip turns pink or red, the solder contains greater than 2% lead. The solder does not pass the Federal Code for "lead free" solder.
- If the swab tip turns purple high levels of tin have been detected. Vigorus rubbing may cause a metallic film to be deposited on the swab.
- Repeat the test, making sure to only touch the tip of the swab to the solder surface, do not rub!
If lead is identified in your home, then use these "lead safe practices":
- Get children tested even if they appear healthy.
- Wash children's hands, bottles, pacifiers, and toys often.
- Regularly clean floors, window sills, and other surfaces.
- Replace mini-blinds that test positive.
- Avoid using positively-tested dishes on a regular basis.
- Avoid using dishes that test positive for storage or for serving acidic foods.
- Don't leave toys that may contain lead in the sun.
- Never sand lead paint.
For a guide on reducing lead exposure when renovating or remodeling, ask for "Reducing Lead Hazards When Remodeling Your Home" published by the EPA. For further assistance consult a lead professional.