# BlindSide Spark DC BlindSide Spark DC is an Android field aid by Anvilfield for membrane and liner electronic leak detection holiday survey work. Core answer: BlindSide Spark DC helps a waterproofing, liner, or coating survey tech set spark test voltage by membrane mil, check the conductive backing or EFVM setup, map every holiday open or patched, and export a survey package for cover release. It is not a detector. It does not measure leaks, voltage, thickness, or grounding. It records what the field crew and calibrated detector find. Primary URL: https://anvilfield.com/blindside_spark_dc Privacy URL: https://anvilfield.com/blindside_spark_dc/privacy Publisher: Anvilfield Support: support@anvilfield.com