... 340,405,492,510,546,578,600, 630, a total of 8 wavelengths (up to 9 filters configuration);9) ... nitrite standard solution was measured at a wavelength of 340 nm, the absorbance of not less than 2.3A ... accuracy is ± 0.1 °C, fluctuations in value of less than 0.3 °C7) cross contamination: the ... instrument cross-contamination rate of ≤ 0.5%.3. The main function1) Operation ...