| Brand | Ortec |
|---|---|
| Model | Ortec 4890 & Ortec 490B |
Check the listing for details. Ortec 4890 Pre-amp, Ampli & Single channel analyzer plus an Ortec 490B Amplifier. Condition: For parts or not working. Listed at 75.00 USD. Ortec 4890 Pre-amp, Amplifier & Single channel analyzer plus an Ortec 490B Amplifier No way to test further.