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It is important to rinse out the test tube when we are done using it, so we do not get false positives. If we do not rinse out the test tubes some substances may still be inside the test tube and give wrong results.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoif you do not wash them chemicals from previous labs could dry in them. the results of your next experiment using these test tubes could be flawed because the old chemicals in the test tubes mixed with new ones.
Wiki User
∙ 7y agoAvoiding contamination from prior experiments ...
and don't forget drying - you don't want excess water either.
Wiki User
∙ 10y agoBasic homework question and the answer is; Yes. Unless the test tubes come from a reliable sterile source. The reason; cross contamination with previously used chemicals.
Wiki User
∙ 12y agoSo its clean.!
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What do you put your test tubes in safely?
Well you are going to need a test tube holder, but make sure you clean your test tubes thurally before you put them in the holder.
Can You Clean What if your Dirty Phone With Rubbing Alcohol?
Yes, you can clean a dirty phone with rubbing alcohol. The alcohol will need to be applied using a rag or a Q-tip. Never pour the alcohol on the phone.
What strength hydrochloric acid should you use to clean brass?
Very simple 2% hydrochloric acid will clean anything off of your brass. you will have a 30 min window before the acid will starts eating the brass. you should always keep a wash solution by your side of 50% baking soda and water.after Whice i always like using a polishing cloth to shine the bass. 30mins is more time then you will ever need because the bass will be come clean instantly.
What do you need to check for when a patient has gastroenteritis before using potassium chloride?
For IV potassium chloride, the patient must able to void.
How do you clean the Mop and Glo white residue film from floors?
You need to make sure that you rinse the floor before being finished with it. A small amount of water will get rid of the film.
What do you put your test tubes in safely?
Well you are going to need a test tube holder, but make sure you clean your test tubes thurally before you put them in the holder.
Do you have to remove IUD before tied your tubes?
There is no need to remove the IUD before (or after) having your tubes tied. Leaving it in will ensure continuous protection.
How do you clean ram using notepad?
you dont need to clean ram
What do I need to do to a wok pan before using it the first time and to maintain it?
Make sure to take the proper prepping procedures before using your pan and clean after every use. Misuse of your pan can lead to burning.
Will three days be enough time to summit a clean urine after using crack cocaine for 5 hours?
NO you need to be clean for 7 to 8 days before pissing clean.. Go get a detox kit at a hemp shop..
What is a test tube brush used for?
you use it to clean the test tube outUm... to clean test tubes! Test tubes are used very often to perform experiments on a small scale, hence they need to be cleaned quite often.it is used for cleaning the testube.
How to clean vegetables before juicing?
To clean vegetable before juicing, you simply need to pass it through water.
Do you have to sand before using primer?
Yes, you'll need to remove any gloss, along with ensuring that the surface is clean, prior to applying a primer.
Ways to clean out your sysyem while pregnant?
i need to clean out my system before i have my baby
Why do we need to clean or wash the glassware after using?
To get rid of germs.
Why transistor is so necessary?
Without the transistor you would need vacuum tubes to accomplish the same thing. None of our inexpensive portable electronics would be possible using vacuum tubes.
How long after having your tubes tied do you need to wait before not using protection?
Once your tubes are tied after your next period just in case you've already ovulated (max of 4 weeks depending on what part of your cycle you are in) To be sure, ask a doctor about this before or after the procedure.
