Ask An Expert
Coulometric Karl Fischer Titrator LWT-A31 is a benchtop unit with 5 to 40°C ambient temperature range, 3 µg to 9999.9 µg measurement range, and offers 400 mA maximum current. Excellent low-power operation makes it possible to compact battery, enables portable function criterion for measuring electrode signal for the electrolysis end. It stability and accuracy are key factors affecting the measurement accuracy. Designed with streamline and 5 inch coloured touch screen with standard testing method used ASTMD4928, ASTMD1533 and ASTMD6304 in titration process.
Coulometric Karl Fischer Titrator is widely used to determine the trace water content in liquid petroleum, chemical engineering, pharmacy, electricity, scientific research and education department.
| Ambient Temperature Range | ≤ 35°C |
| Relative Humidity | ≤ 85% |
| Heating Mantle Cap Power | 1000 W |
| Sample Determination | 1 at a time |
| Ambient Temperature Range | ≤ 35°C |
| Relative Humidity | ≤ 85% |
| Heating Mantle Cap Power | 1000 W × 2 |
| Sample Determination | 2 at a time |
| Ambient Temperature | 10°C to 35°C |
| Measurement Range | 0 to 100 mg |
| Resolution | 0.1 µg |
| Max. Electrolysis Speed | 40 µg /s |
| Ambient Temperature Range | -10 to 35°C |
| Relative Humidity | ≤85% |
| Distillation Flask | 1000 ml |
| Receiver | 5 ml, with 0.05 ml graduation |
| Calorimeter type | Isoperibol |
| Temperature range | 5 to 40°C |
| Measurement range | 5 to 40 MJ/ kg |
| Operation Mode | The outer barrel temperature is constant |
| Calorimeter type | Isoperibol |
| Temperature range | 5 to 40°C |
| Measurement range | 5 to 40 MJ/ kg |
| Operation Mode | A. Outer barrel temperature follows room temperature change mode Or B. Outer barrel temperature constant mode |
| Calorimeter type | Isoperibol |
| Oxygen filling | Fully automatic oxygen filling & releasing, fully automatic bomb raising & lowering |
| Bomb volume | 250 ml |
| Analysis time | < 8 min full test process: <10 min |
| Calorimeter type | Isoperibol |
| Oxygen filling | Semi-automatic |
| Bomb volume | 282 ml |
| Analysis time | 15 to 25 min |
| Measuring Range For Aviation Gasoline | 86.0 to 105.0/MON |
| Measuring Range For Gasoline For Motor Vehicles | National standard: 65.0 to 110.0/RON National-V standard: 70 to 115.0/RON Blended gasoline: 75.0 to 120.0/RON Light gasoline: 50.0 to 85.0 /MON Isomerized gasoline: 85.0 to 120.0/RON Arene gasoline: 90.0 to 120.0/RON |
| Measuring Range For Ethanol | E93: 92.0 to 95.0/RON E97: 95.0 to 99.0/RON Judgement: 60.0 to 120.0/RON |
| Measuring Range For Automobile Diesel Fuels | Cetane number: 25 to 75/CN Cetane index: 20 to 80/CI |
| Measurement item | motor gasoline and diesel |
| measurement unit of octane is ON | 40 to 120 |
| Permissible error of octane | ± 0.5 max |
| Fluctuate range of octane | ± 0.2 max |
| Graduated flask | 100 ml，50 ml |
| Conical flask | 100ml |
| Separatory funnel | 250ml |
| Ambient temperature | (-10 )°C to 35 °C |
| Ambient temperature | ≤ 35 °C |
| Relative humidity | ≤ 85 % |
| Precision of titration tube | Scale division is 0.02 ml |
| Total power consumption | ≤ 1200 W |
| Measurement range | ≥0.05 mg KOH/g |
| Potential measurement range | 0 to 1800.0 mV |
| Burette volume | 10 mL |
| Minimum titration volume | 0.001 ml |
| Volumetric analysis | Titration condensation: 0.1 N; Controlling accuracy: ≤ ± 0.02 ml |
| Automatic acid titration | Titration condensation: 0.1 N; Controlling accuracy: ≤ ± 0.1 pH |
| Automatic potential control | Titration condensation: 0.1 N; Controlling accuracy: ≤ 10 mV |
| Ambient temperature | 0 ~ 35 ℃ |
| Measurement range | Room temperature ~ 150°C |
| Stirring speed | 0 ~ 1200 r / min |
| Heating power | 25 W |
| Interior Dimension | 360 × 250 × 545 mm |
| Temperature controlling accuracy | ≤ 0.5 ℃ |
| Temperature controlling range | Room temperature ~ 200 ℃ |
| Power supply for illumination | 5 V |
| Power of motor | 2 kW |
| Ambient temperature | ≤ 35 °C |
| Relative humidity | ≤ 85 % |
| Temperature range | 5 °C ~ 110 °C, Each scale division is 0.5 °C; 20 °C ~ 150 °C, Each scale division is 1.0 °C; 90 °C ~ 370 °C, Each scale division is 2 °C |
| Aperture of ignition device | 0.8 mm |
| Ambient temperature | 10 °C ~ 40 °C |
| Relative humidity | ≤ 80 % |
| Measurement Range | Ambient Temperature ~ 250 °C |
| Flash Point | Lower than 104 °C , error is 2 °C; Higher than 104 °C , error is 6 °C |
| Ambient temperature | 10 °C ~ 40 ℃ |
| Relative humidity | ≤ 80 % |
| Ignition Mode | electron igniter / gas flame |
| Temperature range | Room Temperature ~ 300 ℃ |
| Ambient temperature | Room temperature to 35 °C |
| Relative humidity | ≤ 85 % |
| Timing range | 1 s to 9 min 59 s |
| Temperature controlling range | Room temperature to 99.9 °C |
| Ambient temperature | Room temperature to 35 °C |
| Relative humidity | ≤ 85 % |
| Temperature controlling range | Room temperature to 99.9 °C |
| Temperature controlling accuracy | ± 1 °C |
| Cubage of bath | Ф300 × 380 mm |
| Temperature controlling range | 0 °C ~ 100 °C |
| Temperature controlling accuracy | ± 0.2 °C |
| Temperature sensor | Industrial platinum resistance, Pt100 |
| Heating power | 2 kW |
| Cooling power | 0.5 kW |
| Steam temperature | 0 to 400℃ |
| Oven temperature | 0 to 500℃ |
| Ambient temperature | -10°C to 35°C |
| Relative humidity | ≤ 85 % |
| Thermometer | Each one for 70°C to 90°C , 100°C to120°C , and 125°C to 150°C |
| Scale division | 0.1 ℃ |
| Graduated flasks | 100 ml |
| Scale division of graduated flask | 1ml |
| Distillation flask | 125 ml |
| Ambient temperature | ≤ 35 °C |
| Graduated flasks | 100 ml |
| Distillation flask | 125 ml |
| Ambient temperature | ≤ 35 °C |
| Relative humidity | ≤ 85 % |
| Distillation flask | 125 mL |
| Ambient temperature | Room temperature to 35 °C |
| Relative humidity | ≤ 85 % |
| Thermometer | (-2 )°C to 300 ℃ and (-2) °C to 400 ℃ |
| Graduated flasks | 10 ml and 100 ml |
| Scale division of graduated flask | 10 ml is 0.1 ml and 100 ml is 1 ml |
| Ambient temperature | (-10) °C ~ 35 °C |
| Relative humidity | ≤ 85 % |
| Graduated flasks | 100 ml |
| Scale division of graduated flask | 1 ml |
| Outer diameter of distillation flask | φ65 |
| Refrigeration tube | φ14 |
| Graduated flasks | 100 ml |
| Distillation flask | 125 mL |
| Ambient temperature | ≤ 30 °C |
| Relative humidity | ≤ 85 % |
| Ambient temperature | 5 °C to 35 ℃ |
| Relative humidity | ≤ 85 % |
| Cubage of buffer vessel | 1000 ml |
| Max. Residual pressure | ≤ 2 mm Hg |
| Beaker quantity | 600 ml |
| Ambient temperature | (-10) °C ~ 40 °C |
| Relative humidity | ≤ 85 % |
| Thermometer Measurement range | (-5) °C ~ 300 °C |
| Ambient temperature | ≤ 35 ℃ |
| Relative humidity | ≤ 85 % |
| Heating power of electric furnace | 250 W × 2 |
| Total power consumption | ≤ 700 W |
| Graduated Flask | 200 ± 0.2 ml |
| Standard Water Value | 51 ± 1 s |
| Temperature Range | 0 ~ 100 °C |
| Temperature Controlling Accuracy | ± 0.2 °C |
| Graduated Flask | 100 ml |
| Standard Water Value | 51 ± 1 s |
| Temperature Range | 0 ~ 100 °C |
| Temperature Controlling Accuracy | ± 0.1 °C |
| Graduated Flask | 200 ± 0.2 ml (50 ± 0.2 ml for bituminous materials) |
| Standard Water Value | 51 ± 1 s |
| Temperature Range | 0 ~ 100 °C |
| Ambient Temperature | 10 °C ~ 40 °C |
| Evaporation bath type and size | Aluminum block bath, φ260 × 130 mm |
| Holes for testing | 3 pieces |
| Size of holes for testing cylinder | φ51 × 70 mm |
| Flow rate display | Flow meter |
| Evaporation bath type and size | Aluminum bath φ260 × 130 mm |
| Holes for testing | 5 pieces |
| Size of holes for testing cylinder | φ51 × 70 mm |
| Working temperature | 160 ℃ ~ 165℃ |
| Bath type | Oil bath |
| Bath capacity | 5000 ml ± 50 ml |
| Ambient temperature | Room temperature to 35 °C |
| Relative humidity | ≤ 85 % |
| Ambient temperature | (-10) °C ~ 35 °C |
| Relative humidity | ≤ 85 % |
| Capillary viscometer | 11 pieces |
| Stirring motor | 6 W, 1200 rpm |
| Ambient temperature | (-10) °C ~ 35 °C |
| Relative humidity | ≤ 85 % |
| Capillary viscometer | 11 pieces |
| Stirring motor | 6 W, 1200 rpm |
| Ambient temperature | (-10) °C ~ 35 °C |
| Relative humidity | ≤ 85 % |
| Capillary viscometer | 7 pieces of Cannon-Fenske reserve-flow capillary viscometer tubes in a group |
| Stirring motor | 6 W, 1200 rpm |
| Ambient temperature | ≤ 30 °C |
| Relative humidity | ≤ 85 % |
| Capillary viscometer | 13 pieces |
| Stirring motor | 6 W, 1200 rpm |
| Ambient temperature | (-10) °C ~ 35 °C |
| Relative humidity | ≤ 85 % |
| Capillary viscometer | 11 pieces |
| Stirring motor | 6 W, 1200 rpm |
| Ambient temperature | 0 ~ 40 ºC |
| Relative humidity | 20 ~ 90 %, RH while 40 ℃ |
| Temperature controlling accuracy | ± 0.1 °C |
| Timing range | 0.0 s ~ 9999.9 s |
| Ambient temperature | 15 to 35°C |
| Relative humidity | ≤ 85% |
| Capillary viscometer | 6 capillary Pinkevitch viscometer tubes |
| Stirring motor | 1200 rpm |
| Ambient temperature | (-10)℃ ~ 35 ℃ |
| Relative humidity | ≤ 85 % |
| Sample cup Inner diameter | 31.0 ~ 32.0 mm |
| Sample cup Wall thickness | 1.0 ~ 1.5 mm |
| Temperature controlling accuracy | ± 0.5 ℃ |
| Refrigeration system | New-type refrigeration compressor |
| Cold trough | Two holes in one trough, and same temperature |
| Ambient temperature | ≤ 30 ℃ |
| Refrigeration system | New-type refrigeration compressor |
| Controlling temperature of cold trough | Cold trough I: RT ~ (-51) °C, ± 1°; Cold trough II:RT ~ (-80) °C, ± 1 °C |
| Ambient temperature | ≤ 30 ℃ |
| Relative humidity | ≤ 85 % |
| Refrigeration system | New-type refrigeration compressor |
| Controlling temperature of cold trough | Cold trough I: 0 °C, ± 0.5 °C; Cold trough II: 0 °C, (-17) °C, ± 0.5 °C; Cold trough III: (-17) °C, (-34) °C, ± 0.5 °C; Cold trough IV: (-70) °C, ± 0.5 °C |
| Ambient temperature | ≤ 30 ℃ |
| Relative humidity | ≤ 85 % |
| Temperature controlling accuracy | ± 0.5 °C |
| Refrigeration system | New-type refrigeration compressor |
| Cold trough | One trough with two baths, temperatures in two baths are equal |
| Controlling temperature of cold trough | Room temperature ~ (-70) °C |
| Refrigeration system | New-type refrigeration compressor |
| Cold trough | One trough with two baths, temperatures in two baths are equal |
| Controlling temperature of cold trough | Room temperature ~ (-70) °C |
| Ambient temperature | ≤ 30 ℃ |
| Temperature controlling accuracy | ± 0.5 °C |
| Refrigeration system | New-type refrigeration compressor |
| Cold trough | One trough with two baths, temperatures in two baths are equal |
| Controlling temperature of cold trough | Room temperature ~ (-70) °C |
| Ambient temperature | ≤ 30 ℃ |
| Refrigeration speed | > 40 °C / 10 min |
| Repeatability for solidifying point | ≤ 2 °C |
| Repeatability for pour point | ≤ 3 °C |
| Capacity | 20 L |
| Temperature range | Ambient +5°C to 100°C |
| Precision | ± 0.1℃ |
| Stirring range | 1200 r/min |
| Freezing point range | -54°C to 2°C |
| Cold bath measurement temperature range | -70° to 20°C |
| Temperature controlling accuracy | ±0.5°C |
| Bath liquids stirring | Electric |
| Chamber quantity | 2 chambers |
| Chamber 01 temperature control | Ambient to -51 ℃ |
| Chamber 02 temperature control | Ambient to -65 ℃ |
| Temperature precision | ±1°C |
| Thermometer | 0 ℃ ~ 360 °C |
| Scale Division | 1 °C |
| Ambient Temperature | ≤ 35 °C |
| Relative Humidity | ≤ 85 % |
| Thermometer | 6 ℃ ~ 400 ℃ |
| Scale Division | 2 °C |
| Spout Aperture | 0.6 ~ 0.8 mm |
| Ambient Temperature | -10 ℃ ~ 50 ℃ |
| Ambient Temperature | 10 ℃ ~ 40 ℃ |
| Relative Humidity | ≤ 85 % |
| Temperature Measurement- Full Scale | Ambient temperature to ~ 400 ℃ |
| Temperature Measurement- Repeatability | ≤ 4 ℃ |
| Ambient Temperature | 10 ℃ ~ 40 °C |
| Relative Humidity | ≤ 80 % |
| Temperature Measurement- Full Scale | Ambient temperature to 300 °C |
| Temperature Measurement- Repeatability | ≤ 8 °C |
| Dimension | 390 x 260 x 590 mm |
| Total power consumption | ≤ 1200 W |
| Power supply | AC 220 V ± 10 %, 50 Hz |
| Heating power of water bath | 1000 W |
| Power supply | AC 220 V ± 10 %, 50 Hz |
| Temperature controlling range in water bath | RT ~ 90 ℃ ± 5 ℃ |
| Cooling bath temperature | (-35) ℃ ± 1 ℃ |
| Evaporation temperature | 35 ℃ ± 1 ℃ |
| Power supply | AC 220 V ± 5 % , 50Hz |
| Measurement range | 0 ~ 75 kV |
| Voltage rising rate | 3 kV ± 10 % / s |
| Distance between electrodes | 2.5 mm |
| Light source | 220 V, 100 W |
| Temperature of grinding milk white light bulb | 2750 ± 50 K |
| Light hole( Φ14) | 26 pieces |
| Color comparing tube | Φ32 mm |
| Samples | 2 |
| Oil bath cubage | 30 L |
| Angle between bomb and water surface | 30 ° |
| Speed of rotary assembly | 100 ± 5 RPM |
| Samples | 6 |
| Temperature controlling mode | Automatic digital temperature |
| Temperature controlling range | Room temperature ~ 160 °C |
| Temperature controlling accuracy | ± 0.2 °C |
| Samples | 8 |
| Temperature | 100 ℃ |
| Temperature controlling accuracy | 0.1 ℃ |
| Flow meter | 3 ± 0.3 L / H oxygen |
| Temperature Range | Ambient to 150℃ |
| Temperature Precision | ± 0.1°C |
| Test Unit | 2 units |
| Heating Power | 1800 W |
| Type | Compact; Desktop |
| Design | Integrated |
| Bath | Metal bath (without water usage) |
| Temperature control point of metal bath | 100℃ ± 1℃ |
| Temperature controlling range | 10 ℃ ~ 35 ℃ |
| Temperature resolution | 0.001 ℃ |
| Mean value of heat capacity | 15 kJ / K |
| Ambient temperature | 20 ℃ ± 5 ℃ |
| Temperature measurement range | 10 ~ 35 ℃ |
| Repeatability error | ≤ 0.2 % (Grade C) |
| Endured pressure in oxygen bomb | 20 MPa |
| Operation environment temperature | 15 ~ 28 ℃ |
| Heat capacity | 14000 ~ 15000 J / K |
| Temperature measurement range | 10 ~ 35 ℃ |
| Repeatability error | ≤ 0.2 % (Grade C) |
| Endured pressure in oxygen bomb | 20 MPa |
| Porcelain crucible | 30 ml |
| Inner iron crucible | 75 ml |
| Outer iron crucible | 190 ml |
| Burner | Mig Burner |
| Bath type | Four holes with a furnace |
| Heating type | Electric resistance furnace |
| Temperature controlling range | 0 ~ 520 °C |
| Temperature controlling accuracy | ± 5 °C |
| Coking furnace | Metal furnace |
| Heating mode | Electric heating |
| Test unit | 5 units |
| Temperature range | Ambient to 550°C |
| Viscosity measurement range | 10 ~ 2000000 MPa•s |
| Ambient temperature | 5 °C ~ 35 °C |
| Ambient humidity | Not more than 80 % |
| Spindles | Four spindles of No.1 ~ 4 |
| Sample hole | 4 pieces |
| Sample quantity | 4 to 12 pieces |
| Ambient temperature | Room temperature to 35 °C |
| Temperature controlling range | Room temperature to 100°C |
| Sample hole | 2 pieces |
| Speed of stirring motor | 1400 rpm |
| Ambient temperature | 10 to 35°C |
| Temperature controlling range | Room Temperature to 100°C |
| Sample hole | 4 pieces |
| Speed of stirring motor | 1400 rpm |
| Speed for sample stirring | 1000 ± 50 rpm |
| Ambient temperature | Room temperature to 35°C |
| Sample hole | 4 pieces |
| Ambient temperature | Room temperature to 35°C |
| Temperature controlling range | 0 to 100°C |
| Temperature controlling accuracy | ± 1°C |
| Sample quantity | 2 to 3 ml (it is equal to sample depth of 3 mm to 4 mm) |
| Measurement time | 60, 120, 240, 300, and 600 s at random |
| Measurement range | 7 ppm to 5 % |
| Repeatability | < 0.029 (S + 0.6) |
| Air flow rate | Not less than 150 L / h |
| Max. Preset time | 99 min 59 s (100 min) |
| Chamber diameter of oven | Φ22 mm |
| Heating power of oven | 1400 W × 2 |
| Operation temperature of water bath | RT ~ 90 °C |
| Temperature controlling accuracy | ± 0.1 °C |
| Dimensions | 550 × 520 × 102 mm |
| Pressure meter accuracy | ± 0.4 % kPa |
| Test bomb | Two samples or a group of parallel samples |
| Bath temperature | 37.8 °C |
| Temperature controlling accuracy | 0.1 °C |
| Dimensions | 500 × 560 × 680 mm, 950 × 540 × 720 mm |
| Experimental temperature range | -50 to 70°C |
| Test sample volume | 50 ml |
| Ambient temperature range | 10 to 40°C |
| Humidity | ≤ 85% |
| Vessel Volume | 4000 ml × 2 |
| Power of Vacuum pump | 160 W |
| Negative power | 3.7 kPa（27.75 mmHg） |
| Power of shaking machine | 30 W |
| Capacity | 2.0 kVA |
| Speed of voltage increase | 2 k V/ s |
| Voltage inspection accuracy | 0.01 |
| Breakdown sensitivity | < 0.1 kV |
| Measurement range | 32 ℃ to 160 ℃ |
| Ambient temperature | 35 °C |
| Temperature resolution | 0.01 ℃ |
| Beaker volume | 1000 mL |
| Temperature range | Room temperature to 1000 ºC |
| Temperature resolution | 0.1 ºC |
| Temperature fluctuation | ±0.1 ºC |
| Heating rate | 1 ~ 80 ºC / min |
| Measurement range | 0 to 600 penetration scale |
| Timing controller | 5 sec, 8 sec, 10 sec, 12 sec, 30 sec and 60 sec |
| Time accuracy | ± 0.1 seconds |
| Resolution | 0.01 mm |
| Measurement range | 0 to 600 penetration scale |
| Timing controller | 5 sec or 60 sec |
| Time accuracy | ± 0.1 seconds |
| Resolution | 0.01 mm |
| Penetrometer | {"Measurement range":"0 to 600 penetration scale","Timing controller":"5 sec or 60 sec","Time accuracy":"\u00b1 0.1 seconds","Resolution":"0.1 penetration","Penetration accuracy":"\u00b1 1 penetration","Weight of standard needle":"2.5 \u00b1 0.05 g","Dimensions (W \u00d7 L \u00d7 H)":"700 \u00d7 400 \u00d7 750 mm","Weight":"30 kg"} |
| Circulatory Water Bath | {"Bath volume":"3.5 L","Temperature range":"5 \u00b0C to 60 \u00b0C","Temperature accuracy":"\u00b1 0.1 \u00b0C","Circulatory water quantity":"3 L\/minute","Pump Lift":"2 m","Power consumption":"1200 W","Power supply":"AC 220V \u00b1 10 %, 50 Hz","Dimensions (W \u00d7 L \u00d7 H)":"600 \u00d7 400 \u00d7 650 mm","Weight":"40 kg"} |
| Measurement range | 0 to 600 penetration scale |
| Timing range | 0 sec to 60 sec |
| Time accuracy error | ≥ ± 0.1 seconds |
| Resolution | 0.1 penetration |
| Temperature Range | Ambient to 100°C |
| Temperature Precision | ± 0.1°C |
| Air Flow | 94 mL ± 5 mL/min, with flowmeters |
| Timing Unit | 0 to 99 min 59 s, resolution 1 s |
| Electric Muffle Furnace | {"Controlled\u00a0temperature":"775 \u00b125 \u2103","Temperature rising time of empty chamber":"\u2264 50 min","Furnace temperature uniformity":"\u2264 15\u2103","Internal dimension":"200 \u00d7 120 \u00d7 80 mm","External dimension":"490 \u00d7 490 \u00d7 450 mm","Power consumption":"2.5 kW","Power supply":"AC 220V \u00b110%, 50 Hz","Net weight":"35 kg"} |
| Temperature controller | {"Maximum control temperature":"1200 \u2103","Dimension":"500 \u00d7 300 \u00d7 235 mm","Power consumption":"5000 W","Power supply":"AC 220\u00b110% V, 50Hz","Net weight":"5 kg"} |
| Electric heating plate | {"Heating power":"(1 to 6) grades, continuously adjustable","Temperature":"400\u2103","Diameter of heating plate":"\u03a6 180 mm","Dimension":"280 \u00d7 250 \u00d7 90 mm","Power consumption":"2000 W","Power supply":"AC 220\u00b110%V, 50Hz"} |
| Potential measuring range | (0 to ±1999.5) Mv |
| Intrinsic error | 0.1 % ±0.5 mV |
| Input impedance | Ri ≥1 × 1012 Ω |
| Burette capacity | 10 mL |
| Measuring range | 0 to 700 taper degree (digital display table 0-70 mm) |
| Timing device | Timing error is less than ±0.1 s |
| Resolution | 0.01 mm |
| Needle insertion accuracy | ±1 cone insertion degree |