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Vial shield

Fig. 11.3. Schematic of the set-up for the treatment apparatus for Y-microsphere embolization. 1, syringe 2, three-way stop cock 3, saline bag 4, shielded vial containing the °Y-microsphere solution 5, needles 6, outflow infusion catheter 7, excess Y-microsphere solution collection vial, shielded... Fig. 11.3. Schematic of the set-up for the treatment apparatus for Y-microsphere embolization. 1, syringe 2, three-way stop cock 3, saline bag 4, shielded vial containing the °Y-microsphere solution 5, needles 6, outflow infusion catheter 7, excess Y-microsphere solution collection vial, shielded...
Fig. 6.20. The schematic diagram of experimental set-up to study photoemission of 02- / - quartz vial 2 - quartz window 3 thermostating jacket 4 - aluminum shield 5 - filter 6 - thermostating jacket 7 - blue glass 8 - sensor 9 - platinum rings 10 - glass covered weight 11 - 13 - lenses A, B - jackets providing optical isolation of chambers. Fig. 6.20. The schematic diagram of experimental set-up to study photoemission of 02- / - quartz vial 2 - quartz window 3 thermostating jacket 4 - aluminum shield 5 - filter 6 - thermostating jacket 7 - blue glass 8 - sensor 9 - platinum rings 10 - glass covered weight 11 - 13 - lenses A, B - jackets providing optical isolation of chambers.
Wall and door influences can exist mainly by radiation or by a small heat conductivity of the gas. It can be seen from Fig. 1.68 that the shielding in the temperature range between -40 °C and 0 °C is effective. However the shielding becomes more important with an increasing temperature difference between the shelves and surrounding and It is especially necessary if the vials contain only a small amount of product. [Pg.74]

I, Chamber wall 2, chamber door 3, shelves 4, vials with product 5, radiation shield, height > filling level of the vials or 6, radiation shield, height cylinder length of the vials. [Pg.74]

Fig. 1.68. Temperature distribution during freezing (4.5 h) and freeze drying (8 h) Each shelf carries a frame for radiation shielding. The design can be different, depending on the kind of vials and the loading and unloading system. Fig. 1.68. Temperature distribution during freezing (4.5 h) and freeze drying (8 h) Each shelf carries a frame for radiation shielding. The design can be different, depending on the kind of vials and the loading and unloading system.
The outer vials are influenced (if the shelf temperature is uniform) by a different temperature of the walls and door of the chamber. If the chamber walls and the door are not kept at shelf temperature, the outer vials must be shielded or they may be too warm during freezing (e. g. freezing differently) or too cold during secondary drying (see Fig. 1.68), and this may lead to a different residual moisture content, from that in inner vials. [Pg.256]

Before the tracer injectcr Is load , it is inserted in the lubricator wit the valve dosed. The lubricator u tightened and tested for leaks by opt mg the valve. The valve is then dostd the piston assembly is removed, the vial containing the radioactive topes is transferred from a shield transfer case into the shield d... [Pg.193]

In Figure 1.68.2 the influence of shielding the product in vials from the walls and doors is summarized. For each run (a), (b) and (c) six groups of vials (168 vials each) filled with 2.8 cm3 (9 mm thickness) of human albumin product, containing 6% solids, were used. Rows 4, 5 and 6 were close to the door and 1, 2 and 3 close to the back wall the condenser connection was at the bottom of the chamber. The RM were determined by the Karl Fischer method. Figure 1.68.3 shows the program of the tests. [Pg.92]

Fig. 1.68.2. Residual moisture content in three identical runs with different shielding between vials and walls and door(s). In each run six groups of vials were formed (168 vials each). Rows 4, 5 and 6 were close to the door... Fig. 1.68.2. Residual moisture content in three identical runs with different shielding between vials and walls and door(s). In each run six groups of vials were formed (168 vials each). Rows 4, 5 and 6 were close to the door...
For BTM and DR data the undetected number of >error< vials cannot be given as a percentage of the total number as it depends, on the accuracy of Tice and DR, on the ratio of chamber volume to solid content of the charge and the individual magnitude of deviation from the average (see Section 1.2.3 and Figures 1.85.2 and 1.85.3). If the required dW is specified as e.g. <1.5% the probability of >error< vials is extremely small if the specification requests, e.g. 1.2% > dW > 0.6%, the probability has to be evaluated a ratio between solids (g) and chamber volume (Vch) > 1, seven min intervals between DR measurements, 90 s pressure rise time, a relatively flat DR plot with time and shielding of the vials/product from wall and door influences can reduce the probability of undetected errors by a factor of 100 or more. [Pg.286]

A strip of Pt-foil submersed in each of the buffer reservoirs provided connection to high voltage. Plexiglass shielding (0.25 in thick) was placed around the inlet buffer reservoir because the top of this vial was quickly contaminated by sample solution carried on the outside of the capillary tube during the sample injection procedure. This contamination, if unshielded, lead to unnecessary operator exposure to radiation. [Pg.66]

Step 3. Carefully open the sample vial in a hood, behind a shield. If the vial has a screw cap, inspect the vial to be sure no liquid is at the cap. If it has a septum-type cap, expect the possibility of a pressure differential and equalize the pressure in the sample vial to room (atmospheric) pressure with the hypodermic needle. [Pg.145]

The channels ratio method makes use of existing counts within the sample vial. This method is suitable when large numbers of counts are present, but it becomes very time consuming with samples containing few counts, because a long time is required to accumulate sufficient counts for statistical accuracy. Most modern scintillation counters therefore employ an automatic external standardization system of quench analysis to avoid the time required for the internal channels ratio method. This method utilizes a specially selected external y radiation source carried in a lead-shielded chamber that is buried in the instrument. Before the regular counting of the sample, the external standard is... [Pg.52]

Evacuated vial Lead shield foreluate Air filter (0.22 pm)... [Pg.79]

Visual Inspection of Finished Product As part of the quality control, all parenter-als will be subject to an inspection for the possible content of particles. Visual inspection of radiopharmaceuticals is more complicated than for other pharmaceuticals, as radiation protection guidelines strongly discourage any direct eye contact with radioactive sources. Normally, the visual inspection of a radiopharmaceutical is performed by placing the vial on a rotating station connected to a camera. The station is properly shielded, and the operators can study the solution on a distant screen. [Pg.92]


See other pages where Vial shield is mentioned: [Pg.1]    [Pg.168]    [Pg.168]    [Pg.183]    [Pg.154]    [Pg.1]    [Pg.168]    [Pg.168]    [Pg.183]    [Pg.154]    [Pg.74]    [Pg.262]    [Pg.15]    [Pg.67]    [Pg.104]    [Pg.193]    [Pg.585]    [Pg.74]    [Pg.262]    [Pg.262]    [Pg.33]    [Pg.92]    [Pg.92]    [Pg.96]    [Pg.232]    [Pg.380]    [Pg.3]    [Pg.55]    [Pg.314]    [Pg.129]    [Pg.74]   
See also in sourсe #XX -- [ Pg.450 ]




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