Spatula, stainless steel

Spatulas. Stainless steel, nickel and porcelain spatulas are available commercially. Some of these are shown in Fig. 11,1, 9 (a) is a spatula with a flexible stainless steel blade and is provided with a wooden handle (6) is a nickel spatula and has a tumed-up end to facilitate the handling... 

Pipets, volumeAic, Class A, various sizes Separatory funnels, 1-L Spatulas, stainless steel... 

Bunsen burner and tubing spatula, stainless steel... 

Bar-code label (with also alphanumeric readout) Adhesive label, 8 mm x 20 mm (approximately) Sample preparation form, carbonless, duphcate Chpboard for sample preparation form Laboratory notebook Pen, permanent, archive approved Marker, permanent Pair of scissors Forceps, stainless steel Sealing film Spatula, stainless steel, spoon type Absorbent wipe, standard Laboratory coat Gloves, latex Gloves, durable, chemically resistant Disposable items (continued) Waste bottle, wide mouth, volume 2 liters with chemical resistant lid Waste bottle, wide mouth, volume 4 liters with chemical resistant lid Wash bottle, polyethylene, 250 ml 1 pack 1 pack 1 set 1 1 2 4 1 5 1 pack 12 4 2 boxes 2 coats 2 boxes 1 pack 1 pack Minimum number 1 1 2... 

The sample will continue to absorb moisture while on the balance pan, the initial rate being about 0.01% min A The use of a well-balanced spatula (e.g. a wooden handled 75 mm stainless steel-bladed palette knife) and glass weighing funnel will speed the weighing process and reduce moisture absorption. 

Caution. Use only plastic or ceramic spatulas when handling these wet products, inasmuch as metal (even stainless-steel) spatulas will cause reduction of the tungstates to a blue, reduced form. 

Disaggregate spleens or nodes by forcing through a fine stainless-steel mesh (e.g., tea strainer) into 10 mL of serum-free DMEM using a spoon-head spatula (dipped into ethanol and flamed to sterilize it). 

Spatulas in stainless steel, nickel, flexible horn, or moulded polythene are available commercially. One such design of palette knife has a flexible stainless steel blade provided with a wooden handle. Nickel spatulas may have turned-up ends, or spoon- or blade-shaped ends, and are available in sizes from 100 mm x 5 mm (for semimicro work) to 200 mm x 10 mm (for macro work). 

Stainless steel spatulas, disposable plastic scoops, or wooden tongue depressors... 

Collect a soil sample into a glass jar using a disposable sampling scoop or a decontaminated stainless steel spatula. Remove stones, twigs, grass, and other extraneous material. Fill the jar to the top with firmly packed soil. 

Using the same apparatus as described above, 40 g. of freshly cut sodium and 8 g. of clean calcium turnings (or bulk calcium) are heated to approximately 850° under an argon atmosphere. After mild agitation at this temperature with the stainless-steel thermocouple well, the sodium-calcium solution is permitted to cool to room temperature. (The thermocouple well is removed before the sodium solidifies i.e., at about 100°.) Fifty milliliters of mineral oil is added to the solidified melt, and the metal mixture is then reheated to 110° and poured into 200 ml. of cold mineral oil in a 1-1. beaker. The melt may be too viscous to pour cleanly if so, the product may be removed with a spoon or spatula. The solidified product is then cut into pieces small enough to pass through a 24/40 standard taper joint and the calcium is separated by the procedure1 described in the previous synthesis. 

Sift the powdered sugar in another stainless-steel bowl. Make a well in the center of the powdered sugar, and pour the warm gelatin mixture into the center. Use a rubber spatula to mix, and once incorporated, use your hands to knead the gumpaste into a dough. 

The oxide characterization steps are carried out with laboratory equipment that has been adapted as necessary to facilitate handling in-cell with the manipulators. The items include a 210-yin-opening stainless steel screen assembly, a 300-g-capacity triple-beam balance, a 10-mL glass graduated cylinder and assorted weigh pans, spatulas, and oxide containers. A remotely operated calorimeter is used to assay the 244Cm content. 

Removal of the precipitate from the filter If the precipitate is bulky, sufficient amounts for examination can be removed with the aid of a small nickel or stainless steel spatula. If the amount of precipitate is small, one or two methods may be employed. In the first, a small hole is pierced in the base of the filter paper with a pointed glass rod and the precipitate washed into a test-tube or a small beaker with a stream of water from the wash bottle. In the second, the filter paper is removed from the funnel, opened out on a clock glass, and scraped with a spatula. 

I) polyethylene wash bottle (m) single-pan electronic balance with automatic zeroing and digital readout, 100 g 0.001 g capacity (n) electric flask heater (o) solid-state control for electric flask heater (p) stainless steel spatula (q) Keck clamp. 

To test the solubility of a solid, transfer an amount roughly estimated to be about 10 mg (the amount that forms a symmetrical mound on the end of a stainless steel spatula) into a 10 x 75-mm test tube and add about 0.25 mL of solvent from a calibrated dropper or pipette. Stir with a fire-polished stirring rod (4-mm), break up any lumps, and determine if the solid is readily soluble at room temperature. If the substance is readily soluble in methanol, ethanol, acetone, or acetic acid at room temperature, add a few drops of water from a wash bottle to see if a solid precipitates. If it does, heat the mixture, adjust the composition of the solvent pair to produce a hot solution saturated at the boiling point, let the solution stand undisturbed, and note the character of the crystals that form. If the substance fails to dissolve in a given solvent at room temperature, heat the suspension and see if solution occurs. If the solvent is flammable, heat the test tube on the steam bath or in a small beaker of water kept warm on the steam bath or a hot plate. If the solid completely dissolves, it can be declared readily soluble in the hot solvent if some but not all dissolves, it is said to be moderately soluble, and further small amounts of solvent should then be added until solution is complete. When a substance has been dissolved in hot solvent, cool the solution by holding the flask under the tap and, if necessary, induce crystallization by rubbing the walls of the tube with a stirring rod to make sure that the concentration permits crystallization. Then reheat to dissolve the solid, let the solution stand undisturbed, and inspect the character of the ultimate crystals. 

Other macro apparatus. Either a porcelain or a stainless steel spatula is very useful in the organic laboratory. A glass spatula may also be made by heating a piece of glass rod and pressing it to the desired shape. 

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