... wave-length range: 800-1000nm; with 11 ones to choose;2. wave-length accuracy: ±5nm; 3.spectral bandwidth: about λ/ ... (flour), maize(corn), soybean5. testing range: moisture, protein, fat, amylase, ash content6. testing accuracy: moisture <±0.2%; error 1 : crude protein ... content ≤15, the error is ≤±0.2%;error 2 : crude protein ...