Parr offers a number of options and accessories for use with their Oxygen Bombs.
Combustion Capsules
Non-volatile samples to be tested in Parr oxygen bombs are weighed and burned in shallow capsules measuring approximately 1″ diameter and 7/16″ deep. These are available in stainless steel, fused silica, fused quartz, and platinum alloyed with 3½% rhodium.
Stainless steel capsules (43AS) are used for most applications. When combusting samples that contain metal particles such as aluminum or magnesium, the non-metallic fused silica 43A3 Capsule or fused quartz 43A3KQ is required. When superior corrosion resistance is needed, the Platinum Rhodium 43A5 Capsule is required.
| Combustion Capsules Ordering Guide | |
| Part No. | Description |
| 43AS | Combustion Capsule, Stainless Steel |
| 43A3 | Combustion Capsule, Fused Silica |
| 43A5 | Combustion Capsule, Platinum – 3½% Rhodium |
| 43A6 | Combustion Capsule, Platinum – 3½% Rhodium w/flanged rim |
| 43AKQ | Combustion Capsule, Fused Quartz |
| 169AC | Combustion Capsule, Platinum, for the Parr 1109A Bomb |
| 208AC | Combustion Capsule, lnconel, for the 1109A Bomb |
| 217A | Heavy Combustion Capsule for 1104 Bomb |
| 446A | Combustion Cup, Stainless Steel, for 1121 Bomb |
Fuse Wire
Parr 45C10 Fuse Wire is a 34 B&S gage, nickel-chromium resistance wire wound on a 10 cm card for ease in cutting a fuse to length. Platinum wire is sold by length as shown.
| Fuse Wire Ordering Guide | |
| Part No. | Description |
| 45C2 | Fuse Wire, platinum, 26 ga, priced per foot |
| 45C3 | Fuse Wire, platinum 36 ga, 300 cm coil |
| 45C10 | Fuse Wire, Ni-alloy, 10-cm card, 500 pieces/card, 3 card/pack, 1500pcs/pkg |
Ignition Unit
2901 Ignition Unit
The 2901 Ignition Unit provides the proper electric current for firing a Parr oxygen or sodium peroxide bomb from a 115 or 230 volt line. Each carries a push switch, pilot light and output binding posts for connections to 7 or 10 cm bomb fuses. Connecting cords must be ordered separately.
| Ignition Unit Ordering Guide | |
| Part No. | Description |
| 2901EB | Ignition Unit, 115v 50/60 Hz. |
| 2901EE | Ignition Unit, 230v 50/60 Hz. |
| A468E | Ignition Cord, 3-ft., single cord with spade terminal one end, banana plug other end. Use with 1108 or 1121 Bombs. Two required. |
| A468E2 | Ignition Cord, like A468E but with spade terminals on both ends. Use with AA140AC Water Bath. |
Oxygen Filling Connections
1825 Oxygen Filling Connection
These Oxygen Filling Connections provide all of the valves, gages and couplings needed for charging. Parr Oxygen Bombs from a commercial oxygen tank under manual control. They are made in three styles that are identical except for the coupling on the bomb filling hose. All units fit a standard 1A oxygen tank having a CGA 540 outlet with a right handed thread. Two pressure gages are provided. The larger gage graduated from 0 to 55 atmospheres shows the pressure to which the bomb has been charged, while the smaller gage shows the available pressure in the supply tank. Gas flow to the bomb is controlled by a needle valve in the gage block. There is an automatic relief valve to prevent-over-charging during the filling operation.
| Oxygen Filling Connections Ordering Guide | |
| Part No. | Description |
| 1823 | Oxygen Filling Connection with flat gasket coupling for use with 1104 Bombs. |
| 1824 | Oxygen Filling Connection with snap coupling for use with 1109A Bombs. |
| 1825 | Oxygen Filling Connection with O-ring coupling for use with 1108 and 1121 Bombs. |
Quartz Liner for the 1108 Oxygen Bomb
For Determining Trace Elements in Combustible Samples
513A Quartz Liner
Trace elements in coal, oil and other combustible samples are readily determined by AA or ICP spectroscopy following combustion in an oxygen bomb. However, trace amounts of heavy metals leached from the bomb walls and electrodes during combustion can cause problems. This can be avoided by using a platinum-lined bomb, but a platinum lining is expensive. As an alternate, Parr offers a quartz liner for the 1108 Bomb that does not provide the full protection of platinum, but is, nevertheless, an effective substitute. In this arrangement the burning sample comes in contact with only the quartz liner and platinum electrodes. Reprints of papers describing the successful use of an 1108 Bomb with quartz liner for trace analysis by AA spectroscopy are available from Parr.
The 513A Quartz Liner for the 1108 Bomb consists of a quartz cup, 61mm diameter x 86 mm deep, with a514A Flat Quartz Cover. Holes are provided in the cover for inserting platinum electrodes which support a fused silica sample cup and a short platinum fuse wire. All of the parts needed for adding this liner are provided in the Model 1912 Quartz Liner Conversion Set.
| 1912 Quartz Liner Conversion Set | ||
| Quantity | Part No. | Description |
| 1 | 513A | Quartz Liner |
| 1 | 514A | Quartz Cover |
| 1 | 4AFB | Platinum Electrode |
| 1 | 5AFB | Platinum Electrode |
| 2 | 68AC | Lock Nut, T303SS |
| 1 | 45C3 | Platinum Fuse Wire, 300 cm |
| 4 | 43A3 | Fused Silica Combustion Capsule |
Users who do not have an 1108 Bomb should order the 1911 Oxygen Bomb Apparatus which provides a bomb complete with a quartz liner and all accessories.
| 1912 Quartz Liner Ordering Guide | |
| Part No. | Description |
| 1912 | Conversion set for adding a quartz liner to an 1108 Oxygen Bomb |
