Beckman L8-70M Ultracentrifuge

Beckman L8-70M Ultracentrifuge

  • Microprocessor control (accuracy within ± 20 RPM)
  • Precise chamber temperature control (0-45°C, ± 1 degree accuracy )
  • Rotor imbalance and automatic maximum speed detection
  • 10 acceleration/deceleration profiles
  • Heavy duty refrigerated induction motor and drive
  • 70,000 rpm and up to 500,000 x g (rotor dependent)
  • Vacuum encased induction drive chamber
  • Shipping weight: 1250 pounds

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Beckman L8-70M Floor Model Ultra Centrifuge

The Beckman L8M is a microprocessor controlled preparative ultracentrifuge used to generate centrifugal forces for the separation of particles, The Beckman L8M ultracentrifuge can work with many of the Beckman family of ultracentrifuge rotors with exception to type 15, 35 and 42.1 

The Beckman L8M features the ultra-smooth variable-frequency induction drive; dual program memory; dual purpose digital displays; touch switch's numeric keypad; programmed operation and 10 deceleration profiles. 

A digital display, indicates vacuum level, rotor speed, rotor temperature, run time remaining or elapsed , and accumulated centrifugal effect (ω2t). Actual operation conditions of the instrument are displayed unless either the system is in input mode, or display toggle is set away from display mode. IN this case the selected values for the run show for 5 seconds.

The Beckman L8-70M and the L8M series in general, features touch switches which operate with light finger pressure. An audible beep and green LED indicator signals when each switch is activated. LEDs also signal when the instrument reaches set values during the operational run.

The Beckman L8-70M ultracentrifuge has 3 modes of operation, manual, automatic and programmed. In manual mode, the L8-70M will run all individual run conditions which the user has specified prior to initiating the run. In automatic mode, a run can be repeated in sequence without having to re-enter any run parameters. In the Beckman L8M's programmed operation, exact duplications of runs can be executed at any time. Programmed operation utilized the Beckman L8M series' Memory-Pac™ storage module.


Dual Program

The Beckman L8-70M ultracentrifuge and moreover the L8M series of ultracentrifuges feature a dual program function. Dual Program permits the entry of two sets of run conditions which are then carried out in sequence. This feature is particularly useful if you require delayed start runs.

The L8M series of ultracentrifuge provides 9 slow acceleration profiles for greater protection of the gradient and sample-to-gradient interfaces and 10 slow deceleration profiles for integrity of separations.

Set Speed 1000-7000 RPM (for L8-70M)
Speed Control ± 20 rpm of set speed
Speed Display Digital of rpm in increments of 100 rpm @1000 rpm and 10 rpm at speeds lower then 100 rpm
Rotor Temperature
Set Temperature 0°C to +45°C
Maximum Temperature programmable to 50°C
Temperature Control (after equilibrium) ± 1°C
Temperature Display Digital read out accurate to ± 1°C
Set Time Up to 99 hrs 59 mins & HOLD for long run times.
Time Display Time Remaining for timed runs, and time elapsed for runs in HOLD mode.
Computed Time In ?2t mode, with speed and ?2t entered- computes value for equivalent time
?2t Integrator,
- Set ?2t up to 9914 radians squared per second.
- ?2t Display Indicated accumulated ?2t to 3 significant figures (exponential notation). Can be used to terminate run at preselected value.
- Computed ?2t In time mode, with speed and time entered, the instrument compute a value for equivalent ?2t.
Acceleration 9 Accel profiles or MAX Accel from 0 rpm to set speed.
Deceleration 10 Decel profiles or MAX Decel from 0 rpm to set speed.
Operation Manual, Automatic, Programmed; Key Interlock selects normal, zonal or locked operation
Dry Cycle Used to dry out chamber
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Preventative Maintenance Visit
('tune up', including cleaning, lubrication, and adjustments)
1 Service Visit
Service Visit 1PM
1 Service Visit
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Parts and Labor    

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