Rinsing solution

Alternatively, immerse for 5 min in hot 5% ammonium acetate solution, rinse and scrub lightly. This removes PbO and PbS04. 

The instrument is occupied for 5 minutes per determination, including changing the solutions, rinsing the cuvettes, etc. 

Transfer the filtrate from Section 6.1.1 or 6.1.2 to a 500-mL separatory funnel and add 150 mL of 5% aqueous sodium chloride solution. Rinse the filter flask from the extraction procedure with two 40-mL portions of dichloromethane. Add both 40-mL rinses to the separatory funnel. Partition the residue into the dichloromethane. Filter the dichloromethane extract through a 10-cm filter funnel containing ca 50 g of anhydrous sodium sulfate supported on a plug of glass wool. Collect the dichloromethane in a 500-mL round-bottom flask. Repeat the partition and filtration steps with an additional 60 mL of dichloromethane. Rinse the sodium sulfate filter cake with 20 mL of dichloromethane and combine the partition and rinse solvents. Concentrate the combined dichloromethane solvents to dryness in a rotary evaporator under reduced pressure at <40 °C. 

Dichloromethane partition. Transfer the aqueous extract into a 500-mL separatory funnel and add 150 mL of 5% sodium chloride solution. Rinse the round-bottom flask with 80 mL of dichloromethane and transfer into the separatory funnel. Shake the separatory funnel vigorously (with occasional venting) for 1 min and allow the phases to separate. Drain the lower dichloromethane through sodium sulfate (approximately 50 g suspended on a glass-wool plug in a 10-cm diameter filter funnel, pre-rinsed with 25 mL of dichloromethane) into a 500-mL round-bottom flask. Repeat the partition with another 80-mL portion of dichloromethane. Drain the dichloromethane through the sodium sulfate as before, and rinse the sodium sulfate with three 10-mL portions of dichloromethane. Evaporate the combined dichloromethane extract just to dryness using rotary evaporation under reduced pressure in a <40 °C water-bath. 

Citrus Fruit Types. The method previously described 11) consisted essentially of scrubbing the fruits with a warm 10% trisodium phosphate solution, rinsing with distilled water, halving each fruit, and reaming the juice and pulp from each half with a power juicer. Pieces of pulp adhering to the insides of the individual hemispheres of peel were carefully scraped free and combined with the remainder of the pulp and juice. Independent analyses were then completed on the discrete peel and pulp-juice samples. Whenever desirable the flavedo and albedo components of the peel were separated with peeling tools, and each was pooled and analyzed. 

These techniques are especially useful for studies of the adsorption of reactants, intermediates and products of electrode reactions. The simplest case corresponds to adsorption that is so strong that the electrode can be removed from the solution, rinsed and its activity measured without interference from desorption. When this procedure is impossible, the activity of the adsorbate can be measured by the electrode lowering method . The radioactive counter is placed under the bottom of the cell, which is made of a plastic foil. The electrode can be located at large distances from the bottom or can be placed so close to the bottom that only a thin layer of solution remains beneath it. The radioactivity values at the two electrode positions permit determination of the adsorbate activity. This procedure can be repeated many times, thus supplying data on the kinetics of the adsorption process. 

When all equipment is removed from the decontamination site, the containment pits will be sprayed with decontamination solution, rinsed, and checked for contamination. All bag items meant for disposal will be picked up by another agency. Once the site has been... 

This flask must be cleaned with h ot chromic acid solution and then, along with all other glassware used in this preparation, soaked in a base solution, rinsed with distilled waiter, and oven dried. Thermal rearrangement of the intermediate vinyl ether in a new (untreated) flask resulted in elimination. 

Thoroughly wash the entire body with soap and water (or dilute hypochlorite solution), rinse with copious amounts of water. 

Remove the cuvette and pour out the solution. Rinse the inside of the cuvette with distilled water and dry it with a clean cotton swab. Repeat this step for test tubes 2 through 5. 

Fixation Fix tissue in 10% neutral buffered formalin (or equivalent) by placing slides in a shde rack and incubating them in a staining dish containing the fixative. Upon removal from formahn solution, rinse with tap and double distilled water (ddH20) to remove salts. 

Aluminum Amalgam. Immerse thin strips of aluminum foil in a two percent aqueous solution of mercuric chloride for 30-60 seconds. Use a big bowl and plenty of solution for a moderate amount of foil. Decant off the solution, rinse the foil strips with dry ethanol, ether, and cut them into pieces of about Icm. ... 

Reductions with aluminum are carried out almost exclusively with aluminum amalgam. This is prepared by immersing strips of a thin aluminum foil in a 2% aqueous solution of mercuric chloride for 15-60 seconds, decanting the solution, rinsing the strips with absolute ethanol, then with ether, and cutting them with scissors into pieces of approximately 1 cm [141,142]. In aqueous and non-polar solvents aluminum amalgam reduces cumulative double bonds [143], ketones to pinacols [144], halogen compounds [145], nitro compounds [146, 147], azo compounds [148], azides [149], oximes [150] and quinones [151], and cleaves sulfones [141, 152, 153] and phenylhydrazones [154] (Procedure 30, p. 212). 

RT for 30 min. Remove blocking solution, rinse once with Soln. B and add 100 pl/well of a dilution series (e.g., 1 500,1 1500,1 4500, 1 13 500,1 40 500,1 121 500,1 364 500 in TBS) of antibody-enzyme conjugate to the wells. Shake at RT for 30 min, remove conjugate solution, knock out the plate on paper tissue, and rinse three times with Soln. B. 

The distilling flask and Vigreux column to be used should be washed with 25% aqueous sodium hydroxide solution, rinsed... 

Add the glycerol and flavor to the bulk solution. Rinse the glycerol container with the remaining water and add to the bulk. Make up to volume with the sorbitol solution. 

Do not wash the apparatus with water Carefully pour out the excess oleum into a jar with a 70% sulphuric acid solution. Rinse the parts of the apparatus with a sulphuric acid solution, gradually lowering its concentration. 

Solutions Rinse Waters Material Substitution Zinc for Cadmium SR (this report) Bayne 1977,... 

If a saturaled salt sensor does become contaminated, il can he washed with an ordinary sudsy ammonia solution, rinsed and recharged with lithium chloride. It is seldom necessary to discard a saturated salt sensor if proper maintenance procedures are observed. 

Remove the buffer solution, rinse the cell with water and dry, taking care not to contaminate or touch the outer surfaces. Refill the cell with the clarified sample solution and scan the sample using the same instrument settings as for the buffer. 

The thin-layer DNA biosensor was immersed during 3 min in an adriamycin solution, rinsed with water, and later transferred to buffer, where a DP voltammogram was recorded. The peak for adriamycin oxidation occurs at + 0.50 V, and only after applying the potential of —0.60 V during 60 s, the oxidation peak for guanine, at +0.84 V, and the oxidation peak for 8-oxoGua, at + 0.38 V (Fig. 20.7) appeared. 

To evaluate the effect of the adriamycin reduction products on the dsDNA, the thin-layer dsDNA electrochemical biosensor is immersed for 3 min in an 0.1 pM adriamycin solution, rinsed with water and afterwards transferred to buffer, where DPV is performed. The procedure is repeated with a new biosensor, but after being transferred to buffer, the sensor is subjected to an applied potential of -0.60 Y during 30 s [2],... 

On skin and clothing. Immediately wash skin with strong soap solution. Rinse thoroughly. Contaminated clothing should be removed, dried, and washed with strong soap solution or destroyed. It may be necessary to destroy shoes by burning. 

On skin. Wash immediately with soap solution. Rinse thoroughly. 

Step 24. Remove the electrode from the cell and turn off the power. Promptly use transfer pipette to discard the solution. Rinse the disk in the cell with 1% solution of ammonium nitrate in 1 99 ammonium hydroxide from a squirt bottle. Discard rinse. 

Electrodes B consist of fine platinum wires supported upon glass rods, and are to be used with a lamp of about 15 watts. They are to be used in testing the conductivity of solutions of weak electrolytes in a 3-inch vial. This vial may be raised until the electrodes are immersed in the liquid. Before testing the conductivity of any given solution rinse the platinum electrodes with... 

In museum collections, most invertebrates will be encountered as natural history specimens, which are divided into dry and wet-preserved. Those animals having a shell or tough exoskeleton, like starfish, shelled mollusks, and lobsters, may be dried after death. The tissue may be removed, but it is often left inside the shell or carapace to shrivel and dry. Wet-preserved specimens are usually fixed in a solution of formalin or some other preservative to prevent the tissues from deteriorating quickly after death. After a brief period, the specimen is usually removed from the toxic fixing solution, rinsed, and placed in a storage solution of 70% ethanol (alcohol) mixed with water. 

If the iron-efficient roots were given iron as FeHEDTA for 20 hr, then taken out of the nutrient solutions, rinsed free of FeHEDTA, and placed in nutrient solutions containing K3Fe(CN)6, Prussian blue formed throughout the protoxylem of the young lateral roots up to the meta-xylem (13). Ferrous iron was continuous in these areas of the roots and in the regions of root elongation and maturation of the primary root (13,19). 

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