| Model | LTS-AAS3624 | LTS-AAS3628 |
| Optics System | Type | Single Beam |
| Monochromator | Anaberration C-T type, focal length 350mm |
| Dispersing element | optical grating 1800 bars /mm, flicker wavelength 250nm |
| Spectral bandwidth (nm) | 0.1、0.2、0.4、0.7、1.4、2nm six grades automatic switchover |
| Wavelength range (nm) | 185-900nm |
| Wavelength indication error | ±0.3 nm | ±0.2 nm |
| Wavelength repeatability (nm) | ≤0.1nm |
| Spectral bandwidth deviation | ±0.02 nm |
| Light point | 4 | 8 |
| Element lamp type | Ordinary element lamp |
| Photometric Property | Reading mode | Transmittance, absorbance, concentration |
| Photometric Range | 0-125%，-0.1-3.00A |
| Cu static baseline drift | ±0.004A/30min | ±0.003A/30min |
| Cu dynamic baseline shift | ±0.006A/15min | ±0.005A/15min |
| Background correction | Deuterium lamp background correction capability >= 30x (1Abs) | Deuterium lamp >= 40x (1Abs) |
| Graphite Furnace Analysis | Characteristic concentration | Cd ≤0.9pg
Cu≤20pg | Cd≤0.6pg
Cu≤20pg |
| Detection Limit | Cd≤1.5pg
Cu ≤25pg | Cd≤1.0pg
Cu≤25pg |
| Repeatability（Cd） | RSD≤4% | RSD≤3% |
| Graphite furnace temperature range | Room temperature ~ 3000℃ |
| Large power temperature rise range | 1500℃～3000℃ |
| Slope and hold time | 1s～255s | 1s～255s |
| Heating rate | Maximum heating rate 2000℃/ s |
| Atomization heating method | Light-controlled heating, time-controlled heating, general heating |
| Outside protective gas flow | 1 L/min |
| Tube protection gas flow | 4 adjustable levels (0, 50, 200, 250ml/min flow) |
| safety precautions | Cooling water flow, protective gas pressure, furnace body temperature, power supply temperature, graphite tube installation alarm |
| Data processing | Measurement mode | Graphite furnace process |
| Concentration calculation method | Standard curve method (6 linear and nonlinear fitting methods), standard addition method, interpolation method |
| Number of repeated measurements | 1-30 times, calculate and give the mean, standard deviation and relative standard deviation of absorbance and concentration |
| Report printing | Parameter printing, data result printing |
| Others | Computer | circumscribed |
| Overall dimensions | 830*650*560 |
| Weight | 110Kg |
| Power | Voltage 220V±22V, frequency 50Hz ±1Hz |
| Operating temperature | 10℃~30℃ |
| Operating Humidity | 40%~85% |
