Testo India Pvt. Ltd. Supplies Spillage detector with Flexible Probe. Testo India Pvt. Ltd. Is involved in the design, development and manufacture of portable instrumentation. Spillage detector with Flexible Probe locates escaping heating flue gases. Spillage detector with Flexible Probe immediately gives off an optical and acoustic alarm making a visual inspection unnecessary. The bendable probe makes it ideal for use at hard-to-access points.