The new PQ001 has many advantages such as small size, high precision, good repeatability, good stability and excellent cost/benefit performance. Based on these advantages, PQ001 has been widely used in the determination of oil & moisture content in agricultural areas.

Basic Parameters:

• Permanent magnet
• 12MHz Frequency
• Ø40mm Probe
• Oil range: 0.1%~100%
• Standard： ISO CD10565 & ISO CD10632

Principle of Oil/Moisture Content Testing
The hard pulse-echo sequence originating from the CPMG sequence with only one echo count, namely only one 180° pulse after the 90° pulse, shown in Figure, is applied to measure the oil and/or Moisture content in seed by means of NMR technology. After a 90° pulse, an FID signal appears and after a 180° pulse, an echo signal appears.

The total oil and moisture analysis using Niumag benchtop NMR for seeds and seeds residues has become the international standard method (ISO CD 10565 and ISO CD 10632),  In seeds, oil and water molecules all have hydrogen and they all contribute to NMR signals. In dried seeds, the water molecules are bound and the mobility of the water molecules is much more restricted than that of oil molecules which remain free in the seeds.