The B2985A is an Electrometer/High Resistance Meter not only offers best-in-class measurement performance, but also provide unprecedented features to maximize measurement confidence. The electrometer offers 0.01fA (10?¹7A) minimum current resolution, which meets virtually all existing and future low-level current measurement needs. The electrometers feature a 1000V voltage sourcing capability that supports up to 10PO (10¹6O) resistance measurements. The electrometer also work with Keysight's well-proven high resistance meter accessories. The electrometer has battery powered versions to eliminate AC power line noise. This available capability provides an unmatched level of noise reduction, enabling low-level measurements that were previously impossible.