Technical Index for the Instrument .
1. Power : 12V battery for DC ; 220V±22V for AC .
2. Testing range and Accuracy :
9999μg /mL, resolution 1μg/mL (1μg/mL≈1ppm≈Lmg/kg) ;
999.9μg/mL, resolution 0.Lμg/mL (1μg/mL≈1ppm≈Lmg/kg) ;
99.99μg/mL, resolution 0.01μg/mL (1μg/mL≈1ppm≈Lmg/kg) ;
9.999μg/mL, resolution 0.001μg/mL (1μg/mL≈1ppm≈Lmg/kg) .
3. Stability :
Displayed drift number is less than 0.4% (T) or 0.3 % (A) , (transmittance measurement) within 3 minutes after powering on for 20 minutes .
4. Sensitivity : Kλ≥3.5×10-3. (Testing in potassium dichromate standard solution) .
5. Repeatability : Error is less than 0.4% (T) or 0.003 (A), ( testing in potassium dichromate standard solution ) .
6. Linear Error : Absorbance range : 0.1～0.3，linear error≤±6% ；Absorbance : 0.3～0.6 , linear error : ≤±4% ; Absorbance : 0.6～0.8 , linear error : ≤±5% ( testing in potassium dichromate standard solution ) ..
7. Power Consumption : ≤ 10W .
III . Testing Items :
It can test heavy metal such as arsenic、lead、mercury、 cadmium、 chromium、copper、nickel、 aluminum . (Notes : Instrument need to be upgraded when testing aluminum according to customers’ need .
