lcr meter

I am attempting to test the electrolytic power supply capacitors in a vintage Forte Model 3 amplifier. There are four, each rated 50v 24,000µF and since they have screw terminals it’s easy to test them out-of-circuit. The LCR meter I borrowed is an East Tester ET4410 (available from, e.g...

I'm needing to make some measures of low frequency impedance (1-1kHz range) of some liquid solutions and plaster samples. 1) What would be a good tool for measuring impedance for around $500? I see mostly very high price ranges for impedance analyzers ($2k or more). 2) Also, when shopping for...