What would be the control group is i was to try and find the viscosity of different liquids?
474395
one generally uses pure water as a base point. other liquids are typically refrenced as lighter or heavier than water.
832640
If you mean by TLC or HPLC, that would depend on the stationary phase and the eluting solvent.  Sorry - not enough info.
323024
All fluids are viscous.  Some are more so than others, and that has to do with how the fluid interacts with itself on a molecular level.
362583
go here for the answer to your question:\n\nhttp://www.2spi.com/catalog/ltmic/cargille-liquid.html\n\ngood luck.
621030
see if this page helps:\n\nhttp://www.chemsoc.org/visElements/pages/data/intro_groupi_data.html
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This might help\nhttp://www.labxnews.com/labxnews185.htm\n\nor\n\nChiller Assembly &\n® Operating Instructions\nModel 75 Viscometer\nCHILLER ASSEMBLY\nThe two modes of operation for the Model 75 Viscometer are: (1) standard heat with tap water cool-down mode and (2)\nchilled sample mode.\nFor most efficient operation in the chilled sample mode, enter the desired temperature using the front panel keypad, the\nsample temperature will be indicated on the LCD readout.\nChiller operation:\nRefer to Fig. B.\nDisconnect the Drain Line from the “Drain” connection on the manifold, and replace with the chiller Liquid In line.\nConnect the Liquid Out line to the “Chiller” connection on the manifold. The “Water Inlet” connection on the remote test\nstation can remain connected as the internal solenoid valve will stop tap water from entering the unit.\nSet the chiller operating temperature 4?C to 8?C colder than the desired sample temperature (this will speed-up the cooling\nprocess). When the sample temperature is within this 4?C to 8?C range, change the chiller temperature setting to with-in\n2?C below the desired sample temperature.\nNOTE: The coldest temperature that can be set on the chiller is minus 12?C.\nThe chiller assembly can cool a 200 Centipoise silicone calibration fluid from room temperature to -7?C in less than 30\nminutes (with sample stirred at 40 RPM). When the sample is maintained at a temperature below freezing for any length of\ntime, an ice shell builds around the cell holder. This ice can be heated off or allowed to slowly melt off, but in either case a\nconsiderable amount of water will accumulate on the base plate.\nA mixture of 50% ethylene glycol (P/N F4173) and 50% distilled water (P/N 52717) can be used as the chiller coolant. This\nmixture should be replaced after three months of service.\nDuring operation of the chiller, the pressure gauge at the outlet should read in the 15 - 25 PSI range. A pressure reading\nbelow 15 PSI indicates: (A) a possible leak in the system, or (B) the bypass valve has been opened too much. A reading\nabove 30 PSI indicates: (A) the possibility of an obstruction, or (B) the bypass valve is closed too much.\nThe use of the cell insulator cap (P/N C6121) is required for sample temperature equilibrium, and prevents an ice shell from\nforming on the top cap. The cell insulator cap must be removed for heated operation as its upper limit is 120?C before\nmelting.\nStandard heated sample/tap water cool down operation:\nRefer to Fig. A\nConnect the Water Drain line to the “Drain” connection on the manifold. The Tap Water In line should be connected to\nthe “Water Inlet” on the manifold. The liquid out line from the chiller can be left connected to the “Chiller Inlet” on the\nremote test station during the heating operation, as the check valve will prevent contamination of chiller coolant.\nPart No. E10890001EA Rev. -\nCHILLER SPECIFICATIONS:\nPower Required………………8 amps at 115VAC, 60hz\nReservoir………………………0.5 gallon (2 liters)\nPumping rate………………….1.6 gallon per minute at 45-60 psig\nWeight………………………….80 pounds\nDimensions……………………13” X 21” X 19”
662479
that depends upon wheather you are going to design experiments for bulk product aspirin or formulations like aspirin tablets.\nfor bulk products tests like melting point, assay(percentage purity), solubility testing .... etc,.\nif that is a tablet you have to proceed with release rate, tablet weight, frightness test,etc.....
228013
Do a web search for the parameters.  We would need much more information from you on sample types, volumes, etc and you capabilities, instrumentation available, etc.  All of these are factors in deciding a method.
961110
Viscosity can be measured in a variety of\nunits. A convenient unit to use is the Poise.\n\nThe viscosity of water at room temp is\nabout 1 cP or 0.01 Poise.\n\nThe viscosity of glycerol or honey is probably\nsomething like 500-1000 cP..ie thicker than\nwater.\n\nShampoo is from my experience something\nlike 10-100 cP, ie. thicker than water but runnier than honey..\n\ns.
980626
ChemDraw from CambridgeSoft Corporation may be help you. Look at www.cambridgesoft.com
358092
Check the Omega online catalog. They have an extensive supply of measuring devices for lab, process, and manufacturing uses. Customer service is top notch.\n\nwww.omega.com
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LIQUID-VAPOR EQUILIBRIUM IN BINARY SYSTEMS\nApparatus\nBoiling apparatus with heating mantle and variac (S), 1/100o thermometer (S),\nrefractometer (L), glass beads or boiling chips (S), weighing bottles (D), small\nstoppered vials (D), 250 ml n-hexane (S) and 250 ml absolute ethanol (S).\nOther binary systems which may be investigated are (1) cyclohexane (S)-\nethanol (S); (2) ethyl acetate (S)-ethanol (S); (3) Methanol (S)-ethyl acetate (S);\n(4) isopropanol (S)-n-hexane (S); (5) isopropanol (S)-cyclohexane (S); (6)\nisopropanol (S)-ethylacetate (S); (7) Acetone (S)-cyclohexane (S); (8) Acetone\n(S)- hexane (S); and (9) cyclohexane (S)-2-propanol (S), (10) 1 Propanol-water.\nCONSULT YOUR LAB INSTRUCTOR TO FIND OUT WHICH SYSTEM YOU\nARE TO INVESTIGATE.\nCAUTION: The ORGANIC LIQUIDS are TOXIC and FLAMMABLE! Use all\nnecessary precautions to avoid accidents!\nCAUTION: DISPOSE OF THESE ORGANIC LIQUIDS by placing in the\nWaste Containers provided. DO NOT POUR DOWN THE DRAIN!\n\nAssemble the apparatus with care; consult instructor if you are at\nall doubtful how to put the pieces together. A 3-way stopcock (shown in Figure\n2) is provided as a means of withdrawing samples of distillate and residue at the\nappropriate time. Best procedure is to withdraw distillate first, then the residue.\n\nProcedure\nClean the apparatus by rinsing with a few milliliters of pure n-hexane. Make sure\nvials are clean and DRY and have labels for marking. Add glass beads to flask\n(carefully).\nThere are three particularly important requirements in this experiment.\n• Make sure that the condensed distillate and the liquid residue samples are\ncollected under equilibrium conditions\n• Read the equilibrium temperature accurately\n• Analyze the compositions accurately\nPlace the thermometer in a position near the top and center of the three legs of\nthe first insert as seen in Figure 3. The hole in the second insert should be\nplaced pointed towards the condenser\nPlace 50 ml n-hexane in a flask. Adjust the variac (not more than 100 -110 volts)\nso that liquid boils "reversibly" (very moderate boiling with only very tiny bubbles\nformed) and so that distillate comes over at a rate which will fill the sample tube\nonce every two or three minutes.\nDraw off the first fraction (containing impurities) which comes over and discard\n(use waste container). When a constant boiling mixture is obtained, record the\nboiling point and withdraw samples from distillate and residue into marked vials.\nAdd 1 ml ethanol to the distillate in the flask, obtain equilibrium-boiling, record the\nboiling point, and again withdraw samples of distillate and residue for analysis.\nBoiling points and refractive indices of the distillate and residue are then\ndetermined after successive additions of 0.2, 0.5, 1, 2, 5 and 5 ml of ethanol. The\nrefractive indices are used to obtain the mole fractions of ethanol in these\nsolutions.\nClean the apparatus by rinsing with a few milliliters of ethanol, and repeat the\nprocess starting with 50 ml of ethanol in the flask. Now, however, boiling points\nare to be determined after successive additions of 0.5, 1, 2, 5, 15 and 20 ml of nhexane\nto the flask.\nIn order to construct a plot of refractive index versus mole percent ethanol, the\nrefractive indices are determined for the pure hexane and ethanol and for a\nseries of solutions containing accurately known weights of hexane and ethanol.\nMixtures about 5 ml in volume containing approximately 1 volume of ethanol to 1,\n3, and 6 volumes of hexane are convenient. To obtain a decent standardization\ncurve of refractive index versus mole fraction, a series of 6 to 8 solutions\ncontaining accurately known weights of n-hexane and ethanol must be prepared\nand their refractive indices measured. Only a few milliliters of each of these\nsolutions are required, so do not waste chemicals when preparing them. The\nrequired data for the vapor pressures of the organic liquids are availab
388409
You can take many physical and sensory measurements on the dried materials before and after the experiment, such as crystal structure, color, odor, density, pH, approximate hardness/strength (i.e., resistance to grinding). \nYou can measure the temperature it reached when boiling and look up the decomposition temperature in the Handbook of Chemistry and Physics if you can find a copy; probably can find something like it on web. Look up boiling point of solution and be sure you use one of the strengths you find in the actual solution; compare to actual boiling point.\nDepending on the type of sugar, you might be able to use Benedict's test for sugar (ref.)
964608
There's quite a few. Just google solubility chart. Here's one I found.
851431
MASS / VOLUME\n that's way you measure it in g/mL
5174
"Viscosity" is the degree to which a substance is fluid.\nIf a substance undergoes a decrease in viscosity when agitated, it is said to be "thixotropic."  The character of being thixotropic is called "thixotropy."
225634
None. They are two different compounds.\n\nIt looks like you want to compare a specific property of the alcohols. Please specify!