COLO.Science · Concentration & Evaporation · Vacuum centrifugal concentrators
LACEVAC4 vacuum centrifugal concentrator — set vacuum 0.1 to 100 mbar, without pump or with vacuum pump
The LACEVAC4 vacuum centrifugal concentrator is the model of the line for demanding methods: the vacuum is not only switched on, it is set to a value between 0.1 and 100 mbar and held there automatically. It removes solvent from many small samples at once: vacuum lowers the boiling point, heat from RT+5 °C to 100 °C drives the evaporation, and rotation at 800 to 2000 rpm keeps the liquid at the bottom of the tube. It is offered in two versions — without a pump, for laboratories that already have one, or with a vacuum pump. The rotor for 90 × 1.5 mL tubes is included. Product code PRO5861.
Vacuum, heat and rotation — with the vacuum under control
Small volumes are easy to lose: under vacuum they bump, splash into the neighbouring tube, or dry onto the wall. In the LACEVAC4 vacuum centrifugal concentrator centrifugal force holds every sample down while it boils, so the dry residue collects at the bottom of its own tube, ready to be dissolved again. Because the vacuum is set as a number, a method runs the same way every time.
Key characteristics
- Vacuum control: automatic; the value is set between 0.1 and 100 mbar and held.
- Control: LCD panel with time, temperature and vacuum; start and stop with one button each.
- Programs: 30 user programs and 4 quick keys.
- Two steps: two times and two temperatures in one run.
- Speed: 800 to 2000 rpm, adjustable; 530 × g.
- Temperature: RT+5 °C to 100 °C, accuracy ±1 °C; pre-heating of the chamber.
- End of run: automatic venting and switch-off.
- Build: stainless steel chamber with PTFE coating, magnetic drive.
Suitable for
- Proteomics and genomics — concentration of digests, peptides, DNA and RNA.
- Methods with a defined vacuum — the pressure is set and repeated from run to run.
- HPLC and SPE — recovery of collected fractions and eluates.
- Natural products and extracts — tubes, vials and bottles up to 100 mL.
- Plates — drying of two 96-well microplates in one run.
Why vacuum lowers the temperature you need
A liquid boils when its vapour pressure reaches the pressure around it. At a set vacuum of 10 mbar water boils at about 7 °C instead of 100 °C, so water and volatile solvents evaporate with little heating. The LACEVAC4 vacuum centrifugal concentrator holds the value you set, so the same solvent boils at the same temperature in every run.
The values in the chart are calculated and rounded. The vacuum that is reached depends on the pump: 5 mbar with the pump offered here; lower set values need a stronger pump. Suitability for a specific solvent is confirmed in the quotation.
Two versions, product codes and rotors
The LACEVAC4 vacuum centrifugal concentrator has no built-in pump. Choose the version by what you already have in the laboratory. Quote and order with the COLO product codes.
connect a vacuum pump you already have · ask us whether it is suitable
diaphragm pump VACUU-CDT30 · PTFE heads, oil-free · 30 L/min · 5 mbar
Rotors
| Microtubes · included | 90 × 1.5 mL or 2 mL |
| Microtubes, mixed | 66 × 1.5 mL + 24 × 5 mL · 54 × 1.5 mL + 48 × 0.6 mL |
| PCR strips | 24 × 8 × 0.2 mL |
| Round-bottom tubes | 72 × 5 mL · 40 × 10 mL |
| Conical tubes | 18 × 15 mL · 8 × 50 mL |
| Sample vials | 64 × 2 mL |
| Glass vials | 16 × 20 mL · 10 × 30 or 40 mL |
| Flasks and microplates | 6 × 100 mL · 2 × 96-well |
One rotor for 90 × 1.5 mL tubes is supplied with the instrument. The other rotors are ordered separately; their product codes are stated in the quotation. Two rotors can be stacked. Tubes stay open during the run.
Technical specifications
Operation and vacuum
| Speed | 800 to 2000 rpm, adjustable |
| Maximum centrifugal force | 530 × g |
| Temperature setting range | RT+5 °C to 100 °C, ±1 °C |
| Time range | 0 to 9999 min; two steps |
| Programs | 30 user programs, 4 quick keys |
| Vacuum control range | 0.1 to 100 mbar, automatic |
| Vacuum pump | external; not built in |
| Final vacuum, with pump | 5 mbar abs., 30 L/min |
Build and general data
| Chamber | stainless steel 304, PTFE-coated |
| Vacuum display | digital, in mbar |
| Drive | magnetic |
| Rotors | 13 types; 90 × 1.5 mL included |
| Noise | ≤ 55 dB(A) |
| Supply | AC 220 V, 50/60 Hz, 1150 W |
| Dimensions (L × W × H) | 481 × 370 × 294 mm |
| Weight | 28.5 kg |
How a run works
Rotor and load
Place the rotor on the drive shaft, put the open tubes in symmetrically and close the lid.
Run
Choose a stored program, or set time, temperature and vacuum — time and temperature in one or two steps — and press start. The LACEVAC4 vacuum centrifugal concentrator starts the rotor first and the pump after it, then holds the vacuum at the set value.
End of run
At the end of the time the pump switches off, the chamber is vented and the rotor stops.
Chamber, vacuum path and cold trap
Vapour leaves the heated chamber of the LACEVAC4 vacuum centrifugal concentrator towards the external pump. A cold trap at −50 °C between chamber and pump condenses it first; this protects the pump and speeds up drying, and is recommended with organic solvents.
How the cold trap works
Vapour from the chamber enters the trap through the centre tube and meets a wall held at −50 °C, where it freezes. Only gas that does not condense goes on to the pump. The trap therefore protects the pump from solvent, and because vapour is removed all the time, the pressure in the chamber stays low and drying is faster.
Switch the trap on first and start the run when it is cold. When ice has built up on the wall, defrost the trap and drain it.
The chamber is stainless steel with a PTFE coating, so the instrument resists common organic solvents, and the magnetic drive needs no shaft seal.
Standard delivery
- LACEVAC4 vacuum centrifugal concentrator.
- Rotor for 90 × 1.5 mL tubes.
- Mains cable.
- Operating manual.
- Declaration of conformity and warranty documentation.
The vacuum pump, the cold trap and the optional rotors are ordered separately. Tubes and samples are not part of the instrument. The delivered configuration for a specific order is the one confirmed in the COLO.Science quotation.
Compare the LACEVAC vacuum centrifugal concentrators
Four instruments cover the range from the compact unit for 1.5 mL tubes to programmable vacuum for demanding methods. The LACEVAC4 vacuum centrifugal concentrator is the highlighted column.
Options for every model
Knowledge base
Sample concentration and evaporation on COLO.Science — our knowledge base.
Selection guide
- Pump. Do you have a vacuum pump, or do you need the version with pump?
- Vacuum. Which value does the method need? Below 5 mbar a stronger pump is required.
- Tubes. Type and number per run decide the rotors.
- Cold trap. Recommended with organic solvents; it protects the pump.
- Place of use. 481 × 370 mm footprint, 28.5 kg, plus room for the pump.
- No need to set the vacuum? See the comparison above.
- Open tubes and nitrogen instead? See the SACO nitrogen sample concentrators.
Configuration notice
This page is provided for orientation and product selection. It does not replace the binding specification, the delivered configuration, the validation protocol or the acceptance criteria confirmed in the official COLO.Science quotation, proforma invoice or order confirmation. Confirm the version, the rotors and the mains voltage version of the LACEVAC4 vacuum centrifugal concentrator for the specific order. B2B prices are quoted net, excluding VAT.
Sales and support for international customers
COLO Lab ExpertsPolje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.
