It has two sample tests inside, for dissolved and solid lead in drinking water. Enviro team checks the samples in their EPA Certified lab and sends you results via email. different numbers for lead leaching from plumbing fittings vs lead in your water supply. Included are lab costs and return freight. After receiving your water sample, a thorough report will be accessible in 3 to 5 business days on any technological device. PROS🟢 A great combo kit for water and surfaces Can trace non detect particles CONS🔴 The results come not as fast as for some other options