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Melting-point apparatus - Wikipedia

Melting-point apparatus - Wikipedia

A melting-point apparatus is a scientific instrument used to determine the melting point of a substance. Some types of melting-point apparatuses include the Thiele tube, Fisher-Johns apparatus, Gallenkamp (Electronic) melting-point apparatus and automatic melting-point apparatus.. Design. While the outward designs of apparatuses can vary greatly, most …

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5.2 Calorimetry - Chemistry 2e - OpenStax

5.2 Calorimetry - Chemistry 2e - OpenStax

A thermometer and stirrer extend through the cover into the reaction mixture. Commercial solution calorimeters are also available. Relatively inexpensive calorimeters often consist of two thin-walled cups that are nested in a way that minimizes thermal contact during use, along with an insulated cover, handheld stirrer, and simple thermometer.

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Ammonium Sulfate Calculator from ... - EnCor Biotechnology

Ammonium Sulfate Calculator from ... - EnCor Biotechnology

Ammonium Sulfate Calculator: Ammonium Sulfate Precipitation is a simple and effective means of fractionating proteins. It is based on the fact that at high salt concentrations the natural tendency of proteins not to aggregate is overcome, since the surface charges are neutralized.

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Distillation - Wikipedia

Distillation - Wikipedia

Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation. Dry distillation is the heating of solid materials to produce gaseous products (which may condense into liquids or solids). Dry distillation may involve chemical changes such as destructive distillation or cracking and is …

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Preparation of DOPC and DPPC Supported Planar Lipid ...

Preparation of DOPC and DPPC Supported Planar Lipid ...

Feb 06, 2013 Stir using magnetic stirrer for 30min at 1100 rpm (the solution should appear homogeneous and milky). Place the solution at 4 C and allow to swell for 1 hour. Stir using magnetic stirrer at 1100 rpm for 30min at room temperature. Place the vial in the middle of the sonicator where cavitation is greatest.

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IRON OVERLOAD AND CHELATION - Guidelines for the ...

IRON OVERLOAD AND CHELATION - Guidelines for the ...

Iron overload occurs when iron intake is increased over a sustained period of time, either as a result of red blood cell transfusions or increased absorption of iron through the gastrointestinal (GI) tract. Both of these occur in thalassaemias, with blood transfusion therapy being the major cause of iron overload in thalassaemia major and increased GI absorption being more …

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Potentiometry - SlideShare

Potentiometry - SlideShare

Jul 13, 2018 INSTRUMENTS PH meter Reference electrode. Indicator electrode. Voltmeter which measures the potential difference. Magnetic stirrer. hot plate ( use the stirrer and make sure heat is off ). magnet capsule . •Glass (burrete and beaker) 52. of 0.1 N NaOH Potentiometric titration curve of (0.1 N) NaOH against (??

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How to Make Phosphate Buffered Saline (PBS) - ThoughtCo

How to Make Phosphate Buffered Saline (PBS) - ThoughtCo

Jun 02, 2019 Phosphate buffered saline (PBS) is a buffer solution that's commonly used for immunohistochemical (IHC) staining and it's often used in biological research. PBS is a water-based salt solution containing sodium hydrogen phosphate, sodium chloride and, in some cases, potassium chloride and potassium dihydrogen phosphate.

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Processing Guide for Developing Latent Prints

Processing Guide for Developing Latent Prints

Magnetic stirrer and stirring rod or other stirring device Orbital shaker Oven Paper towels Plastic bottles or containers. ... occurs. Use on all surfaces •Nondestructive to specimen and subsequent examinations •Detects prints on surfaces not suitable for powders or chemicals

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Melamine formaldehyde: curing studies and reaction ...

Melamine formaldehyde: curing studies and reaction ...

Oct 17, 2012 And there occurs a generation of new strong peak at 2338 cm −1 that corresponds to the stretching vibration of bridged CH 2 group, which gave a strong evidence for methylene bridge formation. 15 ...

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Hemocytometer - an overview | ScienceDirect Topics

Hemocytometer - an overview | ScienceDirect Topics

Robert M. Fauve, Dragan Dekaris, in In Vitro Methods in Cell-Mediated Immunity, 1971 C Quantification. All macrophages and spread macrophages must be tallied in the 2 ruled areas of the hemocytometer.It is to be noted that the percentage of spread macrophages in control animals can vary from 20 to 70% depending on the cleanliness with which the mice are raised.

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What are the different types of distillation process ...

What are the different types of distillation process ...

Specifically, it is the temperature where a phase change occurs from liquid to vapor. Before we go over the process of fractional distillation, let’s look at some examples where this process is commonly used. Fractional distillation is often used to separate mixtures of liquids that have similar boiling points.

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The Physics of Microwave Ovens - Toby Zerner

The Physics of Microwave Ovens - Toby Zerner

The frequency at which this resonation occurs is consistent with that of microwaves; since electric and magnetic fields are emitted perpendicularly to each other and perpendicular to the direction of travel at this frequency, microwaves are effectively emitted. ... and so they reflect off of the “stirrer fan” and into the oven chamber. The ...

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BOILING POINT DETERMINATION - Faculty of Science

BOILING POINT DETERMINATION - Faculty of Science

The stirrer bar is important to avoid “bumping” of hot liquid Set up and use apparatus in a fumehood The sample liquid (approx. 0.5 mL) is introduced into a 150mm diameter test tube using a Pasteur pipette and a small magnetic stirring bar is …

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