Testing the Lead Testers
n extractant, AB-DTPA (ammonium bicarbonate Diethylene Triamine Pentaacetic acid). Here’s how Wallace described their lead testing techinique, We use AB-DTPA (ammonium bicarbonate Diethylene Triamine Pentaacetic acid). It is a gentle extractant and it mimics roots in extracting minerals from the soil. Most often environmental tests are made with boiling acids which are more aggressive than roots. The AB-DTPA method is a standard testing me...