Existent Gum Tester LEGT- B32

Labtron LEGT-B32 is designed with unique air compressor and flowmeter to meet industrial requirements. This instrument is designed and made as per ASTM D381 Standard test method for gum content in fuels by jet evaporation.

Bath type
Bath capacity
Ambient temperature
Relative humidity
Temperature controlling range
Temperature controlling accuracy
Heating type
Evaporation bath type and size Aluminum bath φ260 × 130 mm
Constant temperature bath
Holes for testing 5 pieces
Size of holes for testing cylinder φ51 × 70 mm
Flow rate display
Working temperature 160 ℃ ~ 165℃
Temperature controlling methods
Temperature display
Working pressure for decompression valve 0.07 MPa
Gas source
Air flow rate at jet nozzle 600 ml / s
Dimension 590 x 480 × 340 mm
Total power consumption
Heating power
Power supply AC 220 V ± 10 %, 50 Hz; 3.5 kW
  • Metal bath as the heating system
  • Rapid heating speed and uniform bath temperature
  • Five samples can be determined simultaneously
  • Efficient and convenient
  • High quality air compressor
  • Automatic temperature controlling method
  • Independent flow meter
  • Flow rate can be manually controlled and displayed using float ball flow meter

It is widely used in petroleum, chemical, automobile and development industry. It is the best choice for aviation gasoline and automotive gasoline manufacturing, using, and researching companies for existent gum determination.

Bath type Oil bath
Bath capacity 5000 ml ± 50 ml
Ambient temperature Room temperature to 35 °C
Relative humidity ≤ 85 %
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
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 (-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 ~ 40 ℃
Relative humidity ≤ 80 %
Ignition Mode electron igniter / gas flame
Temperature range Room Temperature ~ 300 ℃
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 ≤ 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
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
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
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
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