Series 4590 Micro Stirred Reactors, 25-100 mL

Series Number:


Bench Top

Mounting Style:
Moveable or
Fixed Head

Sizes, mL:
25, 50, 100

Standard Pressure
MAWP Rating, psi (bar):
3000 (200)

High Pressure (HP)
MAWP Rating, psi (bar):
5000 (345)

Standard Maximum
Operating Temp., °C:
225 w/ FKM O-ring
275 w/ FFKM O-ring
350 w/ PTFE Flat Gasket

High Temperature (HT)/
High Pressure (HP)
aximum Operating
Temperature, °C:
500 w/ FG Flat Gasket
(Fixed Head only)

These are Parr’s smallest individual Stirred Reactors. Smaller vessel sizes are available in our Series 2500 Micro Batch System which includes three reactors in 5ml or 10ml volumes.  They will be a good choice for chemists working with very expensive materials or materials only available in small amounts. They will also appeal to users who wish to minimize the risks associated with hazardous material reactions by restricting the reactants or products to a minimum. Use of the Series 4590 Reactors also helps minimize the quantities of waste products which may require special disposal procedures. The 4590 systems are now available in high pressure (5000 psi) or high pressure/high temperature (500 °C) versions.

These micro reactors have been designed to provide as many of the features of the larger vessels as possible in the limited space available. All of the standard head fittings are provided, with optional cooling now available with aluminum block heaters with cooling capability, welded jackets or Cold Fingers.

These systems are offered in both fixed head and moveable head vessel styles with choices of a self sealing O-ring for temperatures up to 225 °C or with FFKM O-ring for temperatures to 275 °C or with a flat PTFE gasket for temperatures to 350 °C, or with a Flexible Graphite gasket for temperatures to 500 °C with the HP/HT option (for fixed head versions only). A split ring closure is standard.

All three volumes use the same ceramic fiber heater.

These micro reactors can be easily converted from one size to another by simply substituting a larger or smaller cylinder and the corresponding internal fittings. The support system can also be readily adapted to accept any of the vessels from the 4560 Mini Reactor Series. The opportunity to modify these small reactors is restricted because of the limited head space available.