25
P a r r I n s t r u m e n t C o m p a n y
1 - 8 0 0 - 8 7 2 - 7 7 2 0
2
S t i r r e d R e a c t o r s
Series No.
Reactor Type
Nominal Size
Maximum
Pressure psi (bar)
Maximum
Temperature °C
Mid-Size, Bench Top
1000 and 2000 mL
1900 (131)
225-350
Mid-Size, Bench Top, High Pressure
970 and 1900 mL
2900 (200)
350
Mid-Size, Moveable Cart or Floor Stand
1000 and 2000 mL
1900 (131)
225-350
Mid-Size, Moveable Cart or Floor Stand,
High Pressure
970 and 1900 mL
2900 (200)
350
Mid-Size, Moveable Cart or Floor Stand,
High Pressure
600 and 1200 mL
5000 (345)
350
General Purpose, Cart or Floor Stand
1 and 2 gallon (3.75 and 7.5 L)
1900 (131)
225-350
General Purpose, Floor Stand
5 and 2.6 gallon (18.75 and 10 L) 1900 (131)
225-350
Mini, Bench Top
100-600 mL
3000 (200)
225-350
Mini, Bench Top, High Temperature
300-600 mL
2000 (138)
500
High Pressure/High Temperature,
Cart or Floor Stand
1000 and 1800 mL
5000 (345)
500
High Pressure/High Temperature, Bench Top 250 and 500 mL
5000 (345)
500
High Press./High Temp., Cart or Floor Stand 1 and 1.5 gallon (3.75 L and
5.5 L)
3000 (200)
500
Micro, Bench Top
25-100 mL
3000 (200)
225-350
Micro, Bench Top, High Pressure
25-100 mL
5000 (345)
350
Micro, Bench Top, High Pressure,
High Temperature (Fixed Head Only)
25-100 mL
5000 (345)
500
Low Pressure Glass or Metal Reactors
160 mL-1.5 L
150 (10.3) Glass
1000 (69) Metal
225
Mini or Micro, Bench Top, Compact Stand
25-600 mL
3000 (200)
225-350
2
Select Appropriate Series
Pressures (psi)
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.
Size
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.
18.75 L
25 mL
5000
3000
1900
Temperatures
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 275 °C (Kalrez
®
).
225 °C
500 °C
