Latex tubes

Connect one end of 30 cm of latex tubing to glass tubing that is 8 cm long. 

Natural Rubber (Pure amber colored (or dyed any color) Latex tubing) F-G F G G P G E... 

Removing vinyl and amber latex tubing is best done with a razor blade. Do not pull vinyl tubing off because the torque is likely to break the hose connection off. 

Figure 019. Set-up for short path distillation minus any condensers. The connection tubes can be replaced with latex tubing or equivalent tubing. As usual, the heating mantle can be replaced with a Bunsen burner, hot plate, steam bath, oil bath, stove...

Procedure Setup the chlorine generating apparatus as illustrated below. Note your chlorine generator does not have to be as fancy as the apparatus illustrated below, but your system should be similar in design. You can use latex tubing, PVC pipes and other plastic devices as well, steel pipes can be used, but other metals should be avoided due to corrosion. Also, observe the chlorine generator utilizing an electrochemical method. The electrochemical method is sufficient to produce laboratory quantities of gas (see the following illustration). 

Figure 029. Apparatus for preparing chlorine gas—the hydrochloric acid drip method. The out let tube where the dry chlorine gas comes out, should be attached to a latex tube, and this tube then submerged into the potassium or sodium iodide solution. 

Assay Transfer an accurately weighed quantity of sample, equivalent to between 5.5 and 6 g of anhydrous Na3P04 to a 400-mL beaker, dissolve in 40 mL of water, and add 100.0 mL of 1 N hydrochloric acid. Using flexible latex tubing... 

Errera examined the distribution of alkaloids in plant tissues by histochemistry and found that alkaloids were present in active tissues near the vegetative points, ovule, epidermis and the layer just inside of it, hair, peripheral layers of fruits and seeds, vascular bundle, cork cambium, cork tissues, and latex tube (9). Molisch microscopically investigated 15 kinds of alkaloids as distinguishable crystal forms after treatment with acids or alkaloid reagents, and then histochem-ically examined them in plant tissue and cell sections following treatment with acids or alkaloid reagents (9). Tunmann and Rosenthaler observed histochemi-cally the distribution of alkaloids in tissues and cells of 36 families of plants 10). 

Dyck, W. and Da Silva, F.G., 1981. The use of ping-pong balls and latex tubing for sampling the helium content of lake sediments. J. Geochem. Explor., 14 41-48. 

BLs were placed into latex tube filled with degassed PBS (10 mL) in a water bath (See Fig. 2a, c). 

Fig. 2. In vitro Ultrasonography with BLs. The Method of ultrasonography for observation of BLs was shown In (a). BLs were injected into PBS filled latex tube in the water bath. Then, the samples were observed with ultrasonography (b). To confirm the disruption ot BLs by US exposure using Sonopore 4000 (c), BLs were observed with naked image (d, f) and ultrasonography (e, g) before (d, e) and after (f, g) US exposure (2 MHz, 2.5 W/cm 10 s). Circle in (c, e, g) shows US probe...

According to Saitzewa (361) the alkaloids are formed in the meristems and only stored in the latex tubes. 

L) and tributyltin hydride (555 g, 1.91 mol). A 500-mL round-bottomed flask containing niobium pentachloride (250 g, 0.93 mol) is attached to the setup via a piece of Latex tubing (30 cm long, 1.8 cm in diameter) that is adapted with two male 24/40 joints on each end. The reaction mixture is then cooled to — 78°C and the solution is vigorously stirred while the niobium pentachloride is added over a 1-h period. ... 

Models begin conceptually for example, the concept that a blood vessel behaves as a fluid-filled pipe. Concepts may be developed into physical models, for example, using a latex tube to describe a blood vessel, upon which experiments are performed. Often, concepts are realized as mathematical models, whereby the concept is described by physical laws, transformed into a set of mathematical equations, and solved via computer. Simulations, distinct from models, are descriptions that mimic the physiological system. The quantitative nature of physiological models allows them to be employed as components of systems for the study of physiological control, illustrated in several of this section s chapters. 

FIGURE 3.10 Relatjonship between transmural pressure, P - and normalized cross-sectional area, (A -AoVAg, of a long segment of inferior vena cava of a dog. The solid line is a computer solution for a latex tube. [From Moreno el al. (1970) by permission.]... 

Latexmischen latex foam Latexschaum latex foam rubber Latexschaumgununi, Schaumgununi latex paint Latexfarbe latex tube/ lactifer/lacticifer Milchsaftrbhre,... 

The chips were then incubated in an aerated static bed-bioreactor consisting of 21-L polypropylene containers. The lid on the containers vented to the atmosphere through an exit tube. At the bottom of the polypropylene container, a 1-cm side opening provided for controlled inlet airflow. Prior to inoculation, the clean, empty bioreactors were autoclaved for twenty minutes. After thp chips were added to the vessel, steam was injected for thirty minutes through latex tubing connection at the bottom of the reactor. The bioreactors lids were left slightly ajar to prevent over pressurization. After steaming, the bioreactor was drained to remove the excess water that had condensed inside the vessel. The vessel and its contents were then cooled for two hours before inoculation, with the inlet and outlet of the vessel covered with aluminum foil to avoid contamination. 

---