11
Parr Instrument
Microwave Digestion Bombs
Bulletin 4700
References:
B. Bernas, “A New Method for Decomposition and
Comprehensive Analysis of Silicates by Atomic Absorption
Spectrometry”, Anal. Chem.,
40
, 1682 (1968).
D. E. Buckley and R. E. Cranston, “Atomic Absorption Analysis of
18 Elements from a Single Decomposition of Aluminosilicate”,
Chem. Geol.,
7
, 273 (1971).
J. Dolezal, J. Lenz, and Z. Suleck, “Decomposition by Pressure in
Inorganic Analysis”, Anal. Chem. Acta.,
47
, 517-27 (1969).
A. M. Harstein, R. W. Freedman and D. W. Platter, “Novel Wet-
Digestion Procedure for Trace-Metal Analysis of Coal by
Atomic Absorption”, Anal. Chem.,
45
, 611 (1973).
P. M. Hurley and W. H. Pinson, Jr., “Rubidium-Strontium
Relations in Tranquility Base Samples”, Science,
167
, 473
(1970).
R. E. Mansell and T. A. Hiller, “Application of the Parr Acid
Digestion Bomb to Decomposition of Tetraethyllead”, Anal.
Chem.,
45
, 975 (1973).
G. Nelson and D. L. Smith, “Determination of Trace Amounts of
Metals in Foodstuffs by Atomic Absorption Spectroscopy”,
Proc. Soc. Anal. Chem.,
168
(Aug. 1972).
L. E. Ranweiler and J. L. Moyers, “Atomic Absorption Procedure
for Analysis of Metals in Atmospheric Particulate Matter”,
Environ. Sci. & Tech.,
8
, 152-6 (1974).
R. R. Ruch, H. J. Gluskoter and N. F. Shimp, “Occurrence and
Distribution of Potentially Volatile Trace Elements in Coal”,
Environmental Geology Notes, Ill. State Geol. Survey, No. 61
(1973).
C. C. Schnetzler and D. F. Nava, “Chemical Composition of Apollo
14 Soils 14163 and 14259”, Earth and Planetary Science
Letters,
11
, 345-50 (1971).
F. W. Sunderman, Jr. and E. T. Wacinski, “Use of Teflon Digestion
Bombs for Tissue Analysis: Measurement of the Effect of
Estradiol-17B upon Hepatic Copper in Rats”, Ann. Clinical and
Lab. Sci.,
4
, 299-305 (1974).
G. R. Waterbury, “Analytical Methods for Fissionable Materials in
the Nuclear Fuel Cycle”, Program Status Report, June 1971 to
June 1972, LA-5064-SR; also Program Status Report, June
1972 to June 1973, LA-5347-SR, Los Alamos Scientific
Laboratory, Los Alamos, N. M. 87544.
BOMB SELECTION GUIDE
Catalog Number
4781
4782
Size, mL
23
45
Maximum charge, grams,
Inorganic sample
1.0
2.0
Organic sample
0.1
0.2
Recommended Max. Temp. °C 250
Max. Internal Pressure, psig
1200
Cup seal
Teflon O-ring
Overpressure Protection
Compressible Relief Disc
Closure Style
Hand Tighten
Bomb dimensions, cm
Height overall
11.2
14.3
Maximum O.D.
7.8
7.8
Cup dimensions, cm
Inside diameter
3.1
Inside depth
3.0
6.1
Bomb weight, grams
515
625
REFERENCES
The references listed in the adjoining column describe
procedures involving metal-jacketed acid digestion bombs. Any
attempt to transfer these procedures to a microwave digestion
bomb will require careful adjustment of the bomb charge and
the heating time.
ASSUMPTION OF RISK
T
he Parr Instrument Company offers these Microwave
Digestion Bombs to the skilled analytical chemist as an
attractive means for preparing samples for analysis. These
bombs are designed, tested and manufactured with great care to
be as effective and safe as possible in their intended application.
However, since the temperatures and pressures generated within
these bombs are solely dependent upon the filling level, the time
of exposure and the power settings selected by the operator, Parr
will not be responsible for any personal injuries or damage to the
bomb, the oven or other equipment associated with the use of
these bombs. As with all laboratory operations, the user must
ensure that adequate safety procedures are established to protect
all personnel from the potential hazards involved in the use of
these bombs and microwave heating techniques. Rigid controls
must be established to guarantee that operators do not add “just
a little more microwave exposure” to developed procedures.
