| Model | 
            LCH-11 | 
            LCH-21 | 
            LCH-31 | 
            LCH-11-2C | 
        
        
            | Chamber volume (L / cu ft) | 
            150/5.3 | 
            255/9.0 | 
            485/17.1 | 
            150/5.3 x 2 chambers | 
        
        
            | Temperature | 
            Range (℃ / ℉) | 
            -20 to 100 / -4 to 212 | 
        
        
            | Fluctuation (±℃ / ℉) 1) | 
            0.3 / 0.54 | 
        
        
            | Variation at 80°C (±℃ / ℉) 1) | 
            0.8 / 1.44 | 
        
        
            | Time | 
            Heating (min.) | 
            80 (from 20℃ to100℃) | 
        
        
            | Cooling (min.) | 
            60 (from100℃ to 40℃) | 
        
        
            | No. of wire shelves (standard / max.) | 
            2 / 12 | 
            2 / 24 | 
            2 / 29 | 
            2 / 12 per chamber | 
        
        
            | Distance of between shelves (mm / inch) | 
            30 / 1.2 | 
        
        
            | Max. load per shelf (kg / lbs) | 
            15 / 33.1 | 
            20 / 44.1 | 
            20 / 44.1 | 
            15 / 33.1 | 
        
        
            | Permitted total load (kg / lbs) | 
            50 / 110.2 | 
            70 / 154.3 | 
            70 / 154.3 | 
            50 / 110.2 per chamber | 
        
        
            | Dimension (W×D×H) | 
            Interior (mm / inch) | 
            600x500x500/ 23.6x19.7x19.7 | 
            600x500x850/ 23.6x19.7x33.5 | 
            700x680x1020/ 27.6x26.8x40.2 | 
            600x500x500/ 23.6x19.7x19.7 | 
        
        
            | Exterior (mm / inch) | 
            794x1070x1280/ 31.3x42.1x50.4 | 
            794x1070x1630/ 31.3x42.1x64.2 | 
            894x1250x1800/ 35.2x49.2x70.9 | 
            794x1070x1900/ 31.3x42.1x74.8 | 
        
        
            | Net weight (kg / lbs) | 
            125/275.6 | 
            185/407.9 | 
            225/496.0 | 
            195/429.9 | 
        
        
            | Cable Port (mm / inch) | 
            Ø 80 / Ø 3.15 | 
        
        
            | Interface port | 
            RS-232C |