Keithley 6517B Electrometer/High Resistance Meter
The Keithley 6517B Electrometer/High Resistance Meter is the worldwide research laboratory standard for sensitive measurements. With over 60 years of low level measurement expertise, Keithley electrometers provide reliable measurements of current levels down to 10 aA (10×10–18 A), charge levels down to 1 fC, and the highest resistance measurements available up to 1018 Ω. The 6517B is also capable of measuring the largest voltage range—up to 200 V—with an input impedance exceeding 200 TΩ. All this performance is built into an instrument that operates as simply as a digital multimeter.