This system is designed to rapidly evaporate/concentrate solvents by heating both the sample bottom and the incoming nitrogen. Each position is furnished with an individual orifice or needle for the best possible delivery of gas. The pulsing feature that is selectable allows a film of solvent to be thrown on the sidewall; then the vortex collapses. Next the vortex again is created and the process continues until the concentration level is achieved providing the quickest method of evaporation.
DPM FOR EPA VIALS WITH EVAPORATOR Testing has been conducted with water, dichloromethane (DCM), acetone, hexane as well as mixtures of DCM with acetone and hexane with acetone.
Here are some examples:
EPA tall form vials (24) with 50 mL each (2400 mL total volume of solvent) of the following solvents. In this case they were evaporated to dryness (no solvent left in bottles)
Water 3.5 hours Acetone 1.5 hours DCM 65 min
These were done with moderately low temperature on the block and manifold (60C block and 60C manifold set points)
Additional testing was done to determine faster evaporations with higher temperatures set on the block and manifold. For example, 12 samples of 50 mL each of DCM/acetone (1:1) evaporated to dryness in 17 minutes with setting of 80C block and 80C manifold set points. Testing also showed a good recovery of semi-volatile compounds when we took the volume to 2 mL.
- 100 - 800 RPM (Variable Speed)
- Heating to 105°C
- Digital temperature control (120V)
- Built on evaporator
Specifications
- Dimensions: 19"W x 22"D x 14"H
- Platform size: 11-5/8" x 14-1/4"
- Voltage: 120 or 240 volt models
- Cord: 3-wire 5' long
- Mixer mounts: Vibration absorbing for minimum transfer to lab bench.
- On/Off switch: Located on front of unit
- Finish: Light gray and black powder coat finish
- Weight: 85 lbs
- Load Capacity: Up to 10 lbs
Several systems are available such as:
099A DPM12E24, for 24 EPA vials, 120 volts
099A DPM24E24CE, for 24 EPA vials, 240 volts
099A DPM12E2415, for 24, 15-16mm vials, 120 volts
099A DPM24E2415CE, for 24, 15-16mm vials, 240 volts
099A DPM12E96, for 4 SBS blocks 96 well format, 120 volts
099A DPM24E96CE, for 4 SBS blocks 96 well format, 240 volts
Accessory Items: 099A SCR, Solvent recovery cabinet for recovery of solvents.
System price:$10K to $13K
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