| Model | HHW 21.420AII | SHHW 21.420AII | HHW 21.600AII | SHHW 21.600AII | |
| Function | Tem. Range | RT+ 5～65℃ | RT+ 5～ 100℃ | RT+ 5～65℃ | RT+ 5～100℃ |
| Tem. Resolution Ratio | 0.1℃ | ||||
| Tem. Motion | ±0.5℃ | ||||
| Tem. Uniformity | ±1.0℃ | ||||
| Structure | Inner Chamber | High quality hairline stainless steel plate | |||
| Outer Shell | Cold rolling steel electrostatic spraying exterior | ||||
| Cover | High quality hairline stainless steel plate | ||||
| Cover circle | Without | With | Without | With | |
| Test tube rack | Without | With | Without | With | |
| Controller | Heater | Stainless steel heating tube | |||
| Power Rating | 0.5kW | 1kW | 0.75kW | 2kW | |
| Tem. control mode | PID | ||||
| Tem. setting mode | Touch button setting | ||||
| Tem. display mode | Measuring temperature: display on the three digital tubes upper row ；setting temperature: display on the lower row |
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| Timer | 0～9999min（with timing wait function） | ||||
| Operation function | Fixed temperature operation, timing function, auto stop. |
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| Program function | No | ||||
| Additional function | Deviation correction、Menu key lock、 Power-off compensation、Power failure memory |
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| Sensor | CU50 | ||||
| Safety device | Over temperature alarm | ||||
| Specification | Sink size (W*L*H) (mm) | 420*180*140 | 600*300*200 | ||
| Exterior size (W*L*H) (mm) | 570*230*270 | 750*350*360 | |||
| Packing size (W*L*H) (mm) | 670*320*335 | 860*460*380 | |||
| Volume | 11L | 36L | |||
| Supply （50/60Hz) Current rating | AC220V/2.3A | AC220V/4.5A | AC220V/6.8A | AC220V/9.1A | |
| NW/GW (kg） | 8/9.5 | 8.5/10 | 17/19 | 18/20 | |
| Optional accessories | No | ||||
Please inquire
Please inquire
