Eyedropper

An eyedropper is calibrated by counting the number of drops required to deliver 1.0 mL Twenty drops are required. 

MATERIALS Eyedropper or other small glass tube or vial, rubber contraceptive or toy balloon, sealing wax, sugar-chlorate mixture (see section... 

Seal the narrow end of an eyedropper in an open flame or with sealing wax and remove the bulb from the other end. 

Sometimes, once a solid oils out, it doesn t want to solidify at all, and you might not have all day. Try removing a sample of the oil with an eyedropper or disposable pipette. Then get a glass surface (watch glass) and add a few drops of a solvent that the compound is known to be insoluble in (usually water). Then use the rounded end of a glass rod to triturate the oil with the solvent. Trituration can be described loosely as the beating of an oil into a crystalline solid. Then you can put these crystals back into the rest of the oil. Possibly they ll act as seed crystals and get the rest of the oil to solidify. Again, you ll still have to clean up your compound. 

I was pretty sad about this. When he became sick, I took him home to my bachelor apartment for two weeks and fed him milk with an eyedropper, as he lay curled up on a blanket in the bathtub. Penicillin cured the local abscess, but my kitty never regained full neurological function. 

Mineral oils are also nsed to rednce com earworm infestation. Two or three drops applied to com silk with an eyedropper may protect the ear from infestation by com earworms for a few days. Do not apply until the silk has wilted and begnn to turn brown on the ends or pollination may be affected. 

Using an eyedropper, add five drops of fresh whole bovine blood to each test tube. Tap the bottom of the test tubes to ensure proper mixing. 

Although I know of no scientific explanation, some patients get relief in the last days or weeks of tapering by taking very small doses of a medication, for example, by breaking up a tablet of Xanax 0.5 mg into several relatively tiny pieces or by using an eyedropper to dispense 1 or 2 mg of fluid Paxil (paroxetine). 

Fig. 37.23. A four-sequence 1960s demonstration of liquid Aerozine 50 fuel (50 50 hydrazine unsymmetrical dimethylhydrazine) eyedropper quantities falling onto nitrogen tetroxide liquid oxidizer. Reaction is not dramatic in this testing, but is almost explosively violent when combined in typical liquid rocket engine combustion chambers. 

Five 3.5 cm squares of the remnant fabric were treated to different chemicals. Specimens 1, 2, and 3 were wetted using 4 drops of a single solution, applied by use of an eyedropper to the center of each square. Specimens 4 and 5 were wetted similarly with 4 drops of one solution, followed by 4 drops of a second solution. 

According to Pulse Check Trends in Drug Abuse, GHB users and sellers tend to be middle-class white males between the ages of 18 and 30. GHB is typically packaged in plastic bottles (generally water or sports drink bottles) and distributed by the capful for 5 to 20 per dose. Other popular packaging includes eyedropper bottles, glass vials, and mouthwash bottles. 

Wear latex gloves to prevent human scent from interfering with the experiment. Cut filter paper so it fits on the bottom of live trap. Place into the trap. With an eyedropper, apply 0.12 ml of scent solution on the filter paper. 

Using the eyedropper, spread one drop of the ferric chloride solution over the entire surface of one end of the sample stick. A stain will develop immediately. Use the other end as untreated control. Cut the stick in half and compare stained end and control end side by side. Record the color, intensity, and distribution of the stain that appears within the first 30 s ... 

Now add a drop of baking soda solution (the liquid over the undissolved solid) to one of the samples of water and one of the samples of milk. If you have managed to obtain some eyedroppers, these work best, but if not, you can dip a straw in the solution and cover the end with your finger to capture a drop. Stir the solutions. The baking soda-water solution should turn a shocking pink, but the milk should stay pale yellow. 

A homogeneous mixture has constant composition throughout it always has a single phase. Let s examine the salt-water mixture using the eyedropper. A drop of the mixture from the top of the beaker has the same composition as a drop from the bottom of the beaker. In fact, every drop of the mixture contains the same relative amounts of salt and water. 

I have seen life measured out inm eyedroppers of morphine solution. I e.vperienced the a onizin deprivation of junk ... 

Using an eyedropper, syringe, turkey baster,or similar suction device, VERY GENTLY remove the top layer of liquid (the explosive) from the first container and place it into the second acid-resistant container. WARNING Do not attempt to pour the explosive into the second container that might cause the explosive to detonate. 

Suction device (eyedropper, syringe, bulb baster, etc.)... 

Method of cooling (ice water bath, freezer, snow, etc.) Eyedropper OR... 

This is about the most complicated procedure used in making any of the nitric esters. If you feel confused when reading this, do not be discouraged. Many of the better explosives are made much more simply. The only special piece of chemical glassware that would come in handy for this preparation is a separatory funnel (unless distillation of the crude product is attempted - DANGER ). A good eyedropper can replace the separatory funnel in this procedure. I ll explain how in the text. 

If one does not have a separatory funnel, one can improvise. Once the mixing of the ingredients is done, and the product comes to the top, it can be sucked up in an eyedropper and squirted into the salt water. This must be finished before the ten to 15 minute time limit is up, because after that time great geysers of nitric oxide fumes are gushed up by the acids. They must be dumped into the pail of water by that time. Once the water dilutes them, the danger is past. 

With the first reaction vessel finished, one can then move on to the second one, and then the third one. The product layers from the second and third vessels are put in with the salt water wash that the product from the first vessel is sitting in. This salt water wash should be swirled around from time to time as the production is continuing to aid in getting traces of acid dissolved in the water. Since traces of acid are the enemy here, it is important that only the methyl nitrate layer be put into the salt water, not the acid it is floating on. One must take some care in separating the layers, or in sucking up the product layer with an eyedropper. 

The salt water wash bottle has about 175 ml (a little over 200 grams) of methyl nitrate in it. It should be swirled around some more, then allowed to sit for a few minutes. If one has a sep funnel, it should be poured into it, and then the water layer (the bottom one) is drained off. If an eyedropper is being used, the water layer should be removed with it. 

When the lye water treatment is completed, the final purification of the product is next. The lye water is drained off by use of a sep funnel or eyedropper, and then,30 ml of ice cold salt water (5 grams of salt) is mixed in with the methyl nitrate. After a few minutes of gentle shaking in the sep funnel, or good stirring, the mix is allowed to sit. The salt water will contain most of the unused lye that happened to find its way into the methyl nitrate. The salt water layer is separated, and thrown away ... 

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