project	TECHNICAL INDEX
IDLs	3SD ≤ 0.02mg/L (measure 11 times blank and calculate 3 times standard deviation)
Method Detection Limit	0.001mg/L
Basic measurement range	0.0-800mg/L
repeatability	RSD ≤ 1% (11 measurements of 4-20mg/L oil sample)
Accuracy Error	<±2%
correlation coefficient	R>0.9995（0、2、4、8、12、16、20mg/L）
scanning speed	Single wavelength scanning for 1 second/time, 225nm characteristic peak scanning for 15 seconds/time
wavelength range	190 nm~1100 nm
Range of absorbance	0.0000-2.0000 AU (i.e. transmittance of 100-1% T)
Wave number accuracy and repeatability	±0.5cm-1
Measure n-hexane	225nm transmittance greater than 95%
Use temperature and humidity	Temperature range 1 ℃ -40 ℃, humidity ≤ 90%
external dimensions	45cm × 35cm × 25cm (length, width, height)
Use power supply	(220 ± 22) V, (50 ± 1) Hz, 50VA

7、 Characteristics
1. Convenient and fast: The software automatically calls standard curves and extraction ratios without inputting parameters. It can be reset to zero and measured when turned on, and can directly read the oil concentration in water without manual calculation;
2. Accurate wavelength calibration, using the company's UV oil standard filter for one click calibration, multiple calibrations do not require reagents;
3. Real time automatic measurement of n-hexane purity or transmittance;
4. The measurement of 225nm only takes 1 second, and the scanning measurement of 225nm characteristic peak spectrum only takes 15 seconds. The accuracy of the sample can be traced through the absorption peak spectrum;
5. It can be equipped with a fully automatic extractor system to achieve fully automatic quantitative liquid feeding, extraction, separation dehydration, and oscillation adsorption, without manual operation or contact with harmful reagents, ensuring the health of operators;
6. Equipped with a 2cm automatic quadruple cell, achieving one click calibration and automatic switching measurement of multiple samples;
7. Built in touch computer terminal, can also be connected to an external desktop computer, compatible with Windows operating system, with functions such as processing information, storage, printing and saving;
8. Convenient calibration: Single point and multi-point automatic detection and calibration, reducing the workload of operators;
9. UV grating with a shining wavelength of 225nm, used for oil analysis scanning, high accuracy, and good repeatability;
10. Baseline stability: automatic real-time adjustment at 0 points (without baseline drift impact);
11. The standard curve has a long usage time and does not need to be changed for 1 to 2 years. It automatically brings in the automatic regression curve and is easy to operate.