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The Keithley 428-PROG Programmable Current Amplifier offers exceptional current-to-voltage conversion with gains from 10³ V/A to 10¹¹ V/A and rise times ranging from 2μs to 300ms. Its advanced feedback current circuitry provides ultra-low noise of 1.2fA rms and rapid signal response, ideal for high-precision applications in labs and research environments.
Versatile and effective for biochemistry, photonics, surface science, and transient studies, it features a programmable ±5V bias, BNC connectors, and front-panel controls with LED indicators and brightness settings.
Testwall can supply the used Keithley 428-PROG, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Keithley 428-PROG.
Returns
If you are not completely satisfied with your purchase, simply return the item to us in its original condition within 30 days of receipt.
Returned items should be unused and must be returned in original packaging with any enclosed documentation. We will issue a full refund on receipt, excluding the original delivery charge. Alternatively, if preferred, we will exchange the item.
VAT
Prices exclude VAT. Intra-Community transactions: Under the EU VAT Directive, B2B sales of goods across EU VAT borders is VAT zero-rated.
Where VAT is charged, a rate of 23% is applied.
VAT is not charged outside of the EU.
