Beckman Coulter J2-21M Induction Drive Centrifuge

The Beckman J2-21M is a refrigerated, general purpose laboratory centrifuge designed for fast, efficient separation of large volumes of cells, bacteria, subcellular organelles and viruses. Carrying conventional rapid centrifuge rotors with speeds of up to 21,000 rpm producing 51500g.

Specifications:

• Brushless induction drive
• 100- 21,000rpm or 51,500 g maximum rpm
• Microprocessor controls
• Digital display
• Key switch lock operation mode control
• 10 acceleration/deceleration settings
• Temperature range: -30C to 40C

Centrifuge Details

• Brand: Beckman
• Model: J2-21M
• Serial No: 1626
• Catalog No: 344301
• Voltage: 208V
• Current: 30A
• Frequency: 60Hz

Rotor Speed Test:

• 5000 rpm — OK
• 10000 rpm — OK
• 15000 rpm — OK
• 20000 rpm — OK

Timer Test:

• 20 minutes — OK
• 40 minutes — OK

Cooling System (Maximum -20°C as per Manual):

• -20°C — OK
• -10°C — OK

  Note: Rotor speed affects cooling performance.

• Set -20°C
  • 5000 rpm — Actual Temperature: -20°C (OK)
  • 10000 rpm — Actual Temperature: -18°C to -20°C (OK)
  • 15000 rpm — Actual Temperature: -11°C to -13°C (Unable to maintain -20°C)
  • 20000 rpm — Actual Temperature: -4°C to -6°C (Unable to maintain -20°C)

Heater (Maximum 40°C as per Manual):

• The heater is non-functional.