Gel electrophoresis is used to separate things (DNA, RNA, or proteins) by their size. Gel electrophoresis is used to separate things (DNA, RNA, or proteins) by their size. For example, say you have a sample of protein that you have prepared accordingly and want to separate by size. You would run it through a gel, and after a designated amount of time, would view the progress that the protein has made through the gel, and then image the gel.
Most states require plumbers to be licensed, and they typically provide a number you can call to verify that the license is current and that there are no active complaints against it. Any plumber you consider should also hold a current workers' compensation policy and a minimum of $500,000 liability insurance. All states issue plumbing-contractor licenses, and the licensing board can confirm a plumber's legitimacy.
On the other hand, hiring a plumber to fix the problem usually costs much less. The average cost to hire a plumber is $284. Although plumbing projects can run as low as $95 or as high as $800, most homeowners spend between $170 and $458. Some plumbers charge a flat-rate service call plus an hourly rate for their labor. The plumber may be able to break down their labor rate into quarter-hours. The average hourly rate ranges from $45 to $150.