RTT: 10E2 - 10E6 Ohms. Permanently black conductive HDPE provides maximum conductivity for required circumstance. Low Tribocharging - will not easily produce a charge when moved or lifted. Low internal contamination - the conductive in the plastic will not readily contaminate contents of bottle. One handed operation is perfect for cleaning with swabs and brushes. Locking pump will not leak when engaged - suitable for travel. Dispenses approximately 2cc of liquid with each pump.