What is best method for non ferros tube inspection?
364018
Ultrasonics appears to be a possible way. You can also check on www  GlobalSpec.com  , lots of stuff there.\nI forgot ! Eddy-current testing has been used for many years in non-destructive testing of non-ferrous metals.A probe with an alternating current of a frequency decided by the skin-depth of penetration can be used to measure impedance change near a crack etc. Alternately a dc current could be applied via a probe and possibly use a Hall plate sensor to detect field distortions. The subject is very interesting and there is much relevant work to be done.\nNow in the case of non-metallic materials, we can consider a capacitance measuring device; there must have been work done on this method.
363367
something really harsh like paint stripper would have an effect as its quie volatile. if you can pour a flammable liquid into the tube such as petrol etc this will light from a distance but be super careful
881901
Have a look here: http://en.wikipedia.org/wiki/Cathode_ray_tube Scroll down to the Health Danger section.
1130690
try netdetective.  that sight is reliable.
911974
Go with a line graph, that way you can also find out (or estimate) temperatures at times when you didnt measure it.
857117
Run a borax bead test...for info see:\nhttp://en.wikipedia/wiki/borax_bead_test\n\nOr, iron ppts out as its hydroxide...a flocculent ppt... in basic soln, while sodium does not. Dissolve some in water and slowly add NaOH soln, watching for ppt.  This is only good if you are CERTAIN that spl contains only Fe or Na.
1167272
You can buy a simple Radio Shack police/fire scanner. Essentially the same thing, but a much lower price.
273925
The simplest way is spectography. if you are speaking of a breathalizer test it is via conductivity.
436829
What you are asking about is in the realm of surface science.  There are many analytical techniques and I will not try to go through all of them.  This is a good starting place: http://www.uksaf.org/tech/list.html
448060
The simplest way to determine wether a water sample has microbes or not is MICROSCOPIC EXAMINATION ie,to view a drop of that water under a microscope and observe for any micro organisms.
967829
For uneven shape , use graduated cylinder.\nFor regular shape, use vernier caliper or micrometer for more accuracy.\n\n(A graduated cylinder (Grad or graduate for short), also referred to as a measuring cylinder, is a type of laboratory glassware comprised of a tall cylinder with a range of calibrated markings that is used for visually measuring the volumes of liquids in a quantitative manner. A graduated cylinder can be made of translucent plastic or borosilicate glass such as Pyrex. Often, the largest graduated cylinders are made of polyethylene or other rigid plastic, making them lighter and less fragile than glass, but more difficult to sterilize.)\nFor more pl. visit:\nhttp://en.wikipedia.org/wiki/Graduated_cylinder
1057680
Go to this website:\n\nhttp://www.extension.csuhayward.edu/certificate/home_inspection/index.shtml
494816
The best test is a streak test. If you are not familiar with this, it is when you rub the mineral across a piece of unglazed porcelain plate or tile.\n\nIn a streak test the gold will leave behind a gold streak while pyrite will leave behind a black one. This works, trust me, I know. All you need is a piece of unglazed porcelain.\n\nYou said earlier about rubbing it across the skin. I have never seen this work however some cheap jewlery is made of pyrite & will leave the fingers, etc. black looking. That is after you wear it a while.\n\nGold is very dense for its size. Pyrite is not nearly as dense. You could do a density test by displacement in water but I assume from what you told me that the "gold" is in a matrix.\n\nPyrite is usually found as a mass of cubic crystals. Sometimes they take on the appearance of a nugget b/c the cubes are very tiny. Gold will not have these cubes.\n\nGold is sometimes found in quartz veins. If you have a chunk of quartz it is possible that there is some gold in there.\n\nGo with the streak test & let us know what happens.\n\n:)
647307
Try the sonometer or the resonance experiment
1096134
you should wear lab coat and gloves.you should handle carefully all the chemicals and do the experiment stepwise.be patient in taking the readings even a small mistake can make a lot of difference.wash the test tube and spatula before using it.dont keep the test tube directly on the burner.take zerro reading bfore using any instrument.
759217
Burn it in a sprectrophotometer.  Look at the emitted light.
311080
Your question is not clear.\n\nThe parameters will depend on what exactly you wish to inspect except that it should be possible to visually inspect it i.e. should be visible & visually distingushable.