Vacuum for drying, freeze drying, molecular distillation

Requirements:

  • excellent ultimate vacuum even with gas ballast
  • chemical resistance
  • tolerance to condensates

Notices for Pumpchoosing:

Ultimate vacuum
10-1 mbar:		 For freeze drying down to –20 °C, even without chiller, for smaller solvent volumes:
  • RP 15C VARIO ~ 200 g ice/24 h
  • RP 22C VARIO ~ 340 g ice/24 h
Ultimate vacuum
10-3 mbar:		 For freeze drying in conjunction with a chiller:
  • Condenser temperature < –80 °C:
    Rotary-vane pumps RZ 2.5 / RZ 6 / RZ 9 / RZ 16
  • Condenser temperature < –50 °C:
    Chemisty HYBRID pump RC 6
Ultimate vacuum
10-6 mbar:		 For molecular distillation:
  • HP 40B2
  • HP 63B2

Pumping unit equipment Ultimate vacuum
< 3 x 10-1 mbar 10-3 mbar 10-6 mbar
Pump only
(cold trap provided by user)		 RE 2.5
RE 6
RE 9
RE 16		 RZ 2.5
RZ 6
RZ 9
RZ 16
RC 6		 HP 40B2
HP 63B2
Pumping unit with separator
(PC 8 with exhaust waste vapour condenser)		 RP 12C
RP 15C VARIO
RP 22C VARIO
RP 35C VARIO		 PC 8 RC 6
Complete pumping unit with
cold trap, valve, oil mist filter		 PC 3 with:
RZ 2.5
RZ 6
RZ 9
RZ 16