The mobile ferrous debris tester.
The ferrous debris analyzer eratest ferro is a mobile and battery-operated measuring instrument for determining the total content of ferromagnetic wear particles in oils or greases samples within only one second. The instrument operates according to ASTM D8120 and provides the precise concentration in ppm of magnetizable debris with only 2 mL of sample.
Xtra easy: Fast and easy analysis of ferromagnetic particles
eratest ferro allows for the simple quantitative analysis of ferromagnetic particles in oil and grease samples. With the integrated ARM high-performance processor, the built-in rechargeable battery and the 5-inch touchscreen, measurements are completed within one second. An automatic and a manual measuring mode allow the user to customize the eratest ferro exactly to individual requirements.
The concentration of wear metals is determined with just 2 mL of sample. And all this without any sample preparation or special training of the operating personnel. The management of information about the sampled assets enables clear allocation of the results. The associated alarm values make it easy to immediately recognize any problem.

Technical Specifications
Standard test method | ASTM D8120 |
Measurement parameter | mg/L (ppm) of ferromagnetic particles |
Sample volume | 2 mL |
Sample type | Oils, greases, coolants |
Minimum measurement time | 1 second |
Measurement range | 0 – 5500 ppm |
Minimum detection limit | 1 ppm |
Scope of delivery | 100 sample vials, 100 pipettes, calibration samples |
Results database | Over 10 000 test results stored |
Battery | Lithium-ion technology (3400 mAh) for minimum 5 hours operation |
Interfaces | USB interfaces, optional input by external keyboard and barcode reader |
Operation temperature | 0 °C – 50 °C up to 90 % rel. humidity (non-condensing) |
Power requirements | 100 – 240 V AC, 50/60 Hz, 25.2 W |
Dimensions | W x D x H = 22 x 25 x 13 cm (6.7 x 9.8 x 5.1 in) |
Weight | 2.7 kg (6.0 lb) |