| BRAND | Purafil |
| Product | OnGuard 4000 |
| Description | data logger |
| Internal code | IMP4288661 |
| Custom code | 9025 8040 |
| Technical specification | OG4LOGGER OnGuard 4000 data logger QCM sensors (silver+copper) for corrosion, in addition with internal RF/T sensors, including software and USB cable |
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