Freeze Dryer - Lyotrap Plus - LTE Scientific - Used Laboratory Equipment and New Lab Instrument Supplies, UK

The LTE Lyotrap range of freeze dryers has been designed to suit a wide of freeze drying applications in the laboratory environment.

Lyotrap Plus
This unique bench-top freeze dryer has all the features of the Lyotrap and also incorporates a built-in temperature controllable work chamber complete with three shelves. Four floating temperature probes allow the load temperatures to be monitored, and as an option, the unit can be monitored and controlled via a remote PC. The Lyotrap-Plus has a 4kg ice capacity.

Specifications

Model/Specification Mini Lyotrap Lyotrap Lyotrap Plus Lyotrap Ultra Catalogue Number LF/LYO/02/1 LF/LYO/01/1 LF/LYO/03/1 LF/LYO/04/1 Compressor 0.5HP 0.66HOP 0.66HP 0.5HP Ice Capacity 3kg 5kg 4kg 18kg Heat Extraction Rate (-40°C) 80W 170W 220W 350W Minimum Temperature °C -55 -55 -55 -55 Chamber Dimensions diaxD (mm) 175x130 175x300 200x222 350x655 Overall Dimensions HxWxD (mm) 450x500x400 470x650x535 580x920x500 1180x670x760

Options and Accessories

LF/LYO/01/0 Acrylic drying chamber, 240mm internal dia x 300mm high. LF/LYO/02/0 Stainless steel 4-shelf unit, 220mm dia. Foracrylic chamber. LF/LYO/03/0 8-port flask manifold lid, including 8 x 3/4’ quickseal valves. LF/LYO/04/0 Cold trap lid with hose for solvent recovery vacuum pump protection. LF/LYO/05/0 Drying chamber plain lid, 250mm dia x 20mm thick. LF/LYO/06/0 16-port drum manifold. LF/LYO/07/0 24-port drum manifold. LF/LYO/08/0 6-tray shelf support to fit inside drum manifold. (if LF/LYO/11/0 fitted) or acrylic chamber. LF/LYO/09/0 8-port column manifold. LF/LYO/10/0 24-port column manifold. LF/LYO/11/0 Temperature-controlled heater mat arrangement (6 mats). LF/LYO/20/0 Stoppering shelf arrangement. LF/LYO/30/0 48-port ampoule manifold. LF/LYO/31/0 Acrylic lid with fitting and clamp to accept ampoule manifold. LF/LYO/32/0 Split manifold plus clamps to allow 2 x LF/LYO/30/0 to be fitted. LF/LYO/45/0 Pre-freeze bath (-40°C). LF/LYO/50/0 1m vacuum hose and clamp to fit Lyotrap, plus KF25 hose for vacuum pump. LF/LYO/51/0 2-off ‘L’ section rubber gaskets for drying chamber. FP/PMP/01/0 VRC100 vacuum pump plus oil mist filter.

Freeze-Drying Using... Flasks It is usual to pre-freeze samples in the flask before placing them onto the freeze dryer. A popular method of freezing the sample is to rotate the flask in a pre-freezing bath (see accessories list). This has the benefit of providing a thin film of frozen material around the inside of the flask which improves the efficiency and overall speed of the freeze-drying process. Flasks may then be placed onto a suitable manifold for freeze-drying. Many types of manifold and connectors are available. Column manifolds are ideal if you are freeze-drying flasks and jars only. Drum manifolds or the acrylic chamber fitted with a manifold lid will allow more flexibility in the type of product which can be freeze-dried. Shelves Again, product is normally pre-frozen before being freeze-dried. Using our standard shelf arrangement, samples in their existing containers would be placed directly onto the shelves. For freeze drying using the tray and support option, the samples would be pre-frozen in the trays provided and slotted onto the rack. Up to 6 trays could be freeze-dried at any one time. Temperature-controlled heater mats can be supplied for this application. Normally, the acrylic chamber and lid would need to be supplied for these applications, but where flasks and jars also need to be freeze-dried, a drum manifold and lid would be recommended. Vials Freeze-drying in vials requires the use of a stoppering shelf arrangement, connected to the required base unit. This stoppering system which is manually operated will allow up to 500 vials to be dried at once, with a maximum vial height of 50mm. It is supplied complete with suitable trays and an acrylic vacuum chamber. Optional temperature-controlled heater mats will improve the drying rates of samples. Ampoules Following pre-freezing the ampoules would be freeze-dried using either a single or double manifold arrangement, each manifold capable of holding 48 ampoules. For this type of application, the Mini-Lyotrap would be most suitable. Following freeze-drying it is then normal to seal the ampoules, using a fine flame technique. Vacuum Pumps Choosing the right vacuum pump is almost as important as the freeze dryer itself. Reliability is the key. LTE provides a VRC100 pump along with an oil mist filter. This pump is suitable for use with all models of the Lyotrap range, except the Lyotrap-Ultra which is already fitted with a pump.