Stirred Reactor Systems Selection Guide
Serial No. Reactor Type Nominal Size Maximum Pressure psi(bar) Maximum Temperature °C
4520 Mid-Size,Bench Top 1000 and 2000 mL 1900(131) 225-300
4520 HP Mid-Size,Bench Top,High Pressure 970 and 1900 mL 2900(200) 350
4530 Mid-Size,Moveable Cart or Floor Stand 1000 and 2000 mL 1900(131) 225-350
4530 HP Mid-Size,Moveable Cart or Floor Stand,High Pressure 970 and 1900 mL 2900(200) 350
4540 Mid-Size,Moveable Cart or Floor Stand,High Pressure 600 and 1200 mL 5000(345) 350
4550 General Purpose Cart or Floor Stand 1 and 2 Gallon (3.75 and 7.99 L) 1900(131) 225-350
4555 General Purpose Floor Stand 5 and 2.6 Gallon (18.75 and 10 L) 1900(131) 225-350
4560 Mini,Bench Top 100-600 mL 3000(200) 225-350
4560 HT Mini,Bench Top,High Temperature 300-600 mL 2000(138) 500
4571-4572
4577-4578
High Pressure/High Temperature,Bench Top 1000 and 1800 mL 5000(345) 500
4581-4584 High Pressure/High Temperature,Cart or Floor Stand 1 and 1.5 Gallon (3.75 and 5.5 L) 3000(200) 500
4590 Micro,BenchTop 25-100 mL 3000(200) 225-350
4590 HP Micro,BenchTop,High Pressure 25-100 mL 5000(345) 350
4590 HP/HT Micro,BenchTop,High Pressure and High Temperature 25-100 mL 5000(345) 500
5100 Low Pressure Glass Or Metal Reactors 160 mL-1.5 L 150(10.3) Glass 225
1000(69) Metal 225-300
5500 Mini or Micro,BenchTop,Compact Stand 25-600 mL 3000(200) 225-350
...

Size

25 mL

18.75 L

Parr Instrument Company offers laboratory reactors and pressure vessels in sizes from 25 mL to 18.75 L. Generally it is best to select a size that will allow for 1/3 free space. This allows for some liquid expansion during the heating phase of a reaction.

Pressures(psi)

1900

3000

5000

Maximum Allowable Working Pressures (MAWP) are determined by adherence to the ASME pressure vessel design criteria. There are three ranges; up to 1900 psi, up to 5000 psi, and in most cases reactors in the 25 mL to 600 mL range can be rated to 3000 psi. Parr Instrument Company recommends research be restricted to 90% of any vessels MAWP rating. A vessel’s pressure capacity is directly tied to the temperature the vessel will be operating.

Temperatures

225 °C

500 °C

Operating Temperatures have traditionally been up to 350 °C using a flat PTFE gasket. Flexible graphite gaskets have now extended the range to 500 °C. New quick opening designs have been added to the Parr product line that use O-rings for the seal and normally limit the temperature to 225 °C (Viton®) or 300 °C (Kalrez®).

Material of Construction

Parr reactors are normally made of Type 316 Stainless Steel, but they can be made of other alloys as well.

The list of available construction materials includes:

Type 316/316L Stainless Steel
Alloy 286
Alloy 20
Alloy 230
Alloy 400
Alloy 600
Alloy 625
Alloy B-2/B-3
Alloy C-276
Nickel 200
Titanium Grades 2, 3, 4, & 7
Zirconium 702 & 705