. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. Capillary tube Platinum wire Open ended electrodes Araldite insulation Tip ground flat and smooth to known surface area Recess of known volume and length Figure Oxygen tension electrodes 985 E (Aero Research Ltd., Duxford) is the most satisfactory as this resin has very good insulating properties, is extremely tough and is shghtly flexible. Several coats are necessary and each must be baked for about 10 minutes at 200°C so that it is quite hard before the next layer is applied. The in
. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. Capillary tube Platinum wire Open ended electrodes Araldite insulation Tip ground flat and smooth to known surface area Recess of known volume and length Figure Oxygen tension electrodes 985 E (Aero Research Ltd., Duxford) is the most satisfactory as this resin has very good insulating properties, is extremely tough and is shghtly flexible. Several coats are necessary and each must be baked for about 10 minutes at 200°C so that it is quite hard before the next layer is applied. The insulated wire is placed in a Tufnol clamp and ground flat at the end by hand, using a very fine hone. Mechanical grinding, with a jeweller's wheel, is not satisfactory as it tends to spread a thin layer of metal over the Suture Bare back end of electrode. Skin^ Skin fold Suture Electrode. y//////////y////////7//////////////y/y Figure A method of fixing an intradermal or subcutaneous electrode end of the insulation, thereby increasing the effective area of the exposed end of the wire. It is essential that the electrode tip should be ground quite flat and have a known area if approximately absolute levels of oxygen tension are being measured at the same time as changes. These electrodes are relatively robust and may be inserted into the tissues by hand or mechanically. If changes over several days are to be measured they may be left imbedded in the animal with only a small part projecting through the skin. This may be useful in following the development of inflammatory reactions {Figure ). Recessed electrodes are made with platinum wire which is first degassed by heating to white heat to prevent bubble formation in the next stage. 577. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Donaldson, Pe
Size: 2720px × 919px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
