I think you're talking about a bottle brush. It has a bunch of bristles organized 360 degrees around a piece of wire so that you can scrub the nasty bits out of glassware. There's a picture in the following link: http://www.homebrewery.com/images/bottlebrush.jpg.
another name for test tube is culture tube or sample tube
It depends on what size test tube you are using.
If a test tube is clean and dry, then there should be nothing in it.
You first get a bowl of tap water, get a test tube with the argon in it. Take out the cork screw out of the test tube. Get a splint put it over the test tube when you open it and it it pops that means it is a metal
It is subjective as to whether a test tube baby is immoral or not. Some religions feel that it is.
A test tube cleaner is a tool used to scrub and clean test tubes, typically made of durable materials like nylon or stainless steel. It is used by inserting it into a test tube along with cleaning solution or water, and then rotating the cleaner to remove any residue or contaminants from the interior surface of the test tube.
A test tube cleaner is used as suggested -- it is used to clean test tubes. It is round, and has a modestly long handle so the bristles can reach the bottom of the test tube being cleaned.
Usually a test tube brush is used or if it is small, a pipe cleaner.
A red or yellow test tube is typically used for an hCG test, as these tubes contain a gel separator to separate serum from the blood after centrifugation. This allows for better and cleaner sample collection for the test.
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A thin, long brush called a 'test-tube brush'.
A test tube holder, also known as test tube clamp or test tube rack, is used to hold a test tube in place when the tube is hot or should not be touched. It allows safe handling of test tubes during heating or when conducting chemical reactions.
A test tube (or sample tube) has no errors.
Clamping a test tube
to hold the test tube
Test tube holder
Follow 1/2 inch tube from air cleaner on right side of car behind headlight bucket.