The Parr series 5100 Low Pressure Reactors are offered in response to users requests for:
Parr has developed a new O-ring and closure system to accommodate the requirements of this unique glass-to-metal seal and support, which is convenient to use. A face seal-type O-ring design is used with the proven and popular Parr split ring closure. For this application a special gasket groove was designed to retain the O-ring on the head of the reactor when it is opened. A full range of O-ring materials is available for chemical compatibility with reactants, products and solvents. Six sealing screws are tightened finger tight to develop the seal on the O-ring. The split ring snaps together with latches to provide a secure and positive closure.
The split ring for the glass vessel is padded with high temperature plastic cushions so the vessel does not come in direct contact with the metal split ring. Six sealing screws are tightened finger tight to develop the seal on the O-ring. The split ring snaps together with latches to provide a secure and positive closure. alternate metal cylinders use a different split ring designed to handle the higher working pressure of the metal vessels.
These reactors are equipped with Parr magnetic drives to provide a trouble free internal stirrer. These drives have been designed and tested to routinely deliver 2000 hours of operation without service.
The standard internal stirrer for these vessels is a turbine type impeller. These impellers have been designed to provide good axial mixing to keep any solid particles up in suspension and to provide good gas distribution through the liquid phase.
A gas entrainment impeller is available as an alternate agitator for those users whose primary need is gas re-circulation from the head space of the reactor through the liquid phase.
The head of each glass reactor is equipped with:
These reactors are a combination of a glass reaction vessel with a metal head, internal stirrer, dip tube, thermowell, cooling loop, and external valves and fittings, or alternately an all metal system.
The standard material of construction for the head is Type 316 Stainless Steel with PTFE coated T316SS internals. As an alternative the head and internal wetted parts can be provided in any of the standard Parr materials of construction. See the 5100 Ordering Guide.
Series 5100 Reactors can be easily converted between the 160, 300, 450, and 600 mL sizes by simply changing the cylinders and internal parts. In a similar manner, 1 L and 1.5 L are interchangeable. While the 160-600 mL stand cannot be converted to hold 1 and 1.5 L vessels, the larger stand can be converted to accommodate the 160-600 mL vessels. If you plan to convert at a later time, be sure to order the stand for the largest size you plan to use so the shield and supports will not have to be replaced.
These reactors are available with either jacketed or non-jacketed glass cylinders allowing for heating by either a user supplied circulator or with a removable heating mantle respectively. While we would normally expect glass vessels to be equipped with circulating jackets to maintain their transparent feature, some users may not need to heat their reactions or may prefer to use removable heating mantles when they need to work at elevated temperatures. Although transparency is not an issue with metal vessels, users will generally want to select the same heating method for metal vessels as they use for glass vessels so they can utilize the same heating and control system for both.
Users who are using a circulating bath that has its own temperature control for use with these reactors will want to order the reactor without a heating mantle and may only need a motor controller for stirring speed to complete the system. Most laboratory circulators should be adequate for these small vessels. Moveable electric heating mantles are available for vessels that do not have attached circulating jackets. These mantles are for use with 115 or 230 VAC.
The Parr 4848 Controller provides PC communications to all of the functions housed in the controller. The 4848 Controller offers PID Control with auto tune, Ramp and Soak Programming, Separate Heating and Cooling Control Loops, Stirrer Motor Speed Control, Full or Half Power Heater Option, Lockout Relay and Reset for Over Temperature Protection, Expansion Modules for Tachometer, Pressure, and High Temperature Alarm. Users who wish to program their reactor to automatically step through a pre-set temperature profile will want to select the 4848 Controller with this feature. These controllers will control the electric heating mantle but not a user supplied circulator.The Parr 4848 Reactor Controller brings digital communications to all of the functions of these modular reactor controllers. The 4848 offers all of the features expected in a Parr general purpose reactor controller, namely: