Tubes silicon rubber

Fig. A. 1. A setup for replacing the air in the sample container with argon, using a balloon. At the connection D, a short piece of thick-walled silicon-rubber tubing is used.

Fig. A.5. An apparatus for the lsO-labclling of the CO2 produced in biolumines-cence reactions. The stopcocks A-E and the ground joint of reaction vessel are lubricated with high-vacuum grease, and the connections between the glass tubes are made with short pieces of thick-walled silicon rubber tubing. The stopcocks C and D are high-vacuum type, such as Ace Glass, Cat. No. 8197-04 and 8195-236, or Corning, Cat. No. 7473-3.

Fig. 4. Artist s drawing of the stimulator, silicone rubber tube or guidance channel, and the electrical circuit within the spinal cord. The tube was implanted into the dorsal spinal cord. The uninsulated tip of the cathodal electrode (negative) was sealed within the center of the tube, while the anodal electrode (positive) remained outside the vertebral column, sutured to paravertebral musculature. The body of the stimulator was surgically placed within the fat pad at the base of the guinea-pig s neck. To complete a circuit, current must flow initially into each end of the hollow tube as diagrammed. For diagrammatic purposes, the drawing is not made to scale. [Reproduced with permission from Borgens (1999).]...

The olfactometer was calibrated using C02, as the odorous gas, diluted in air to 10000 ppm by volume, and contained in a 30 1 Tedlar bag (Fig. 5) (7). C02-free oxygen was used as the diluting gas. The C02 concentration was was sufficiently low to avoid significantly altering the density of the odorous air. The bag was connected by silicon rubber tubing to the rotameter inlets and the diluted gas mixture was sampled via a tube placed inside the nose-piece and analysed by an infra-red gas analyser, with an accuracy of greater than 1% (Fig. 5). 

In addition to polymers with C, H, O or N atoms, silicon rubbers also can be pyrolyzed as shown by Lee and Khong (1986). Silicon rubber tubes (Dow... 

Silicon rubber tubes with an inner diameter of 1 mm and an outer diameter of 3 mm have been found to work well in stiff steel tools. The price of this tube is so low that the tube can be replaced every injection if necessary without affecting the part cost significantly. 

The cone calorimeter is also used to quantify the corrosivity of products of combustion as described in ASTM D 5485. The Cone Corrosimeter uses the same load cell, specimen holder, retainer frame, spark igniter, conical heater, and exhaust system as the cone calorimeter. A heated stainless steel sampling tube is connected to a funnel placed on top of the conical heater. A gas sample is continuously drawn from the tube at a rate of 4.5 L/min. The sampling tube is connected with silicone rubber tubing to the pump via an 11.2L exposure chamber, a filter, and a flow meter. A target is placed in the exposure chamber at the start of the test and exposed to the corrosive atmosphere of the gas sample for 60 min or until the specimen has lost 70% of its total mass loss, whichever occurs first. 

Fig. 1. Kubitschek style chemostat. A, Air pump B, hosecock clamps (closed during autoclaving) C, growing culture D, air exit port E, ground glass joints F, syringe filter, G, gang valve H, bottle containing water I, input area K, heating tape M, fresh medium O, siphon P, peristaltic pump R, rubber stopper with holes S, splash shield T, silicone rubber tubing W, waste Y, waste collection tube. Circles in the liquids represent bubbles. Stippling indicates media with cells.

Installation of Capillary Columns Glass columns, whidi are coiled when purdiased, must have straight ends to allow than to fit into imions at the injector and detector. A device is commercially available to straightoi capillary ends, but it is more usual to use a small butane flame. The column is suspended on a clamp stand and a supply of c[Pg.182]

The liquid circuit in a column chromatography experiment should be as short as reasonably practical and contain a minimum of sharp corners or other regions where mixing can occur. Connecting tubing usually has an internal diameter of 1 mm and may be made of polyethylene, PVC, PTFE or other materials. For low pressure operation satisfactory joints can be made with silicone rubber tubing of intermediate wall thickness and an internal diameter smaller than the outer diameter of the tubes to be joined. Connectors for higher... 

PYREX TUBE CHEESE CLOTH SILICON RUBBER TUBING... 

Silicone rubber tubes are mainly utilized in medical and food technology e.g. as transfusion tubes, catheters and tubes for drinks. Silicone cables are widely utilized in applications for which thermal stability, weathering resistance and chemical resistance are required e.g. baking ovens, hot lamps and electrical connections for electrical motors and transformers. 

Rates of hydrolysis were measured on a Varian Cary 219 UV spectrophotometer equipped with a Haake constant temperature bath. A stirred batch tank reactor was placed in a water bath maintained at 26.0 0.1 C and the solution was transported to a micro flow UV cell located in the spectrophotometer via silicone rubber tubing using a precision flow peristaltic pump (MHRE 22) manufactured by the New Brunswick Scientific Company. 

---