When a soda is filled in a foam cup, it foams right away. Is there a way to fill the cup without causing a lot of foam?
tilt the cup until it is on a diagonal, and pour slowly, so that it hits the side of the cup.
Use an electric knief…the kind you use to carve a turkey. Its what is used by people who have to cut foam rubber for furnature
I bought a Therapedic memory foam mattress – it was great in the store – it molded to my body right away. When it was delivered to my house and I lay down on it, it was seriously as hard as a rock. I am unable to sleep on it at night. Is that normal when it’s brand new or is something wrong with the mattress? Does anyone else own one of these and had this happen to them? I’m pretty upset since I spent close to $1000 on it.
I would call the store!! They may have delievered the wrong one, if its supposed to be like foam…
Or, you could have tried out a different model, and bought the wrong one, thinking it was the right one and it wasnt…
Talk to your store rep and see what the problem is.. (Do it before too many days have passed or they may not take it back!).
I wish you well..
Jesse
We did a lab where we extracted DNA from a germ wheat cell. Here is what we did: first we heated a beaker of water to around 60 degrees Celsiuswe added 15 ml of the water into a beaker. we also added meat tenderizer and about 1 gram of germ wheat (which is the germ wheat cell before it is processed into flour). Then we mixed the solution for around 3 minutes. After, we added 1mL of alcohol to the beaker slowly so no foam produced. After, we mixed the beaker slowly so no foam produced for approxmapproximatelytes. Next we took cold alcohol (ethyl alcohol) and added it slowly to the solution so it created a layer on the top. Once the alcohol was added, the DNA floated to the top in a white stringy substance. That was our control experiment. For our experimental group, we changed ethyl alcohol with isopropyl and re did the experiment. The only noticable change was that the DNA didnt flow to the top as high as if we used ethyl alcohol but the amount of DNA that was extracted was about the same. My teacher explained to me that she thought that Ethyl Alcohol was more dense than Isopropyl and thus, the DNA was higher in the Ethyl Alcohol than the Isopropyl. Yet the density of ethyl alcohol is 0.791 g/cm3 and the density of isopropyl is 0.785g/cm3. This theory would make no sense becaue the difference in density is too small for something notable would happen like that. Speculate reasons why.
I mean speculate reasons why that the isopropyl acts this way and the ethyl alcohol acts this way in the experiment. Thank you and please answer.
Dont ask people to do your homework for you
ive only ever had the blown rubber type but the foam stuff is cheaper is there are difference or do they do the same job, there seems to be so many on the market. help
I check all thing I buy on google, but you get what you pay for as a rule
Can it be washed in a washing machine?
What would happen if I did wash it in a washing machine although it shouldn’t be?
It’s turned yellow since last year when I bought it and its supposed to last 5 years according to the package. I have no real problem with the color, but I assume it should be cleaned after a while like almost everything else on a bed (except for the matress being of course).
There aren’t any details on how to wash it and since this is the first time I’ve ever used on I’m pretty much clueless.
I just read somewhere the yellow color is completely normal, but still want to know if it can be washed (out of curiosity).
YOU CAN WASH IT AND YOU DEFINITELY SHOULD. HOWEVER, DUE TO ITS POROUS NATURE, WASH IT ON THE "GENTLE CYCLE" OF YOUR MACHINE. DO NOT DRY IT IN THE DRYER…JUST LET IT AIR-DRY. PUT SOME FABRIC SOFTENER IN TO MAKE IT SMELL GOOD!
IF YOU WASH IT IN A MACHINE ON A SETTING LIKE, "HEAVY" IT MAY TEAR PIECES OF IT OFF. THEN, YOU’RE STUCK PICKING THE PIECES OUT OF THE WASHER.
How isP U foam made before it is cut in sheets
Foam is made through the following process: A big pile of goop (usually in your case urethane monomers that will eventually become foam) sits there. What it is, is basically a very poor fuel. It’s a bunch of unlinked hydrocarbons ready to release some of its energy.
Then what happens is you start the chemical reaction somehow (either with catalyst, a small fire underneath it, or some other means depending on your monomers), and that gets a chain reaction going where the hydrocarbons break their original bonds and form new ones.
This generates a bit of heat (which is why I said it’s basically a crappy fuel), but instead of forming CO2 and water as a waste product, it produces so little heat that all it can do is fuse itself into a larger clump (hence poly-meaning multiple-mers).
But as this reaction happens, some gas IS also released, whether it be steam, co2, (or an ozone depleting gas that was used to make surfboard foam). That’s what causes the styrofoam to puff up as it hardens (kind of like baking bread). Actually, a lot like baking bread.
I have to buy it in a store not online.
I want maybe polyethylene or polyurethane.
Here’s what I have in mind if my description wasn’t coherent:
http://www.amcases.com/images/FoamInsert…
http://www.onboard.tv/images/product_ima…
http://shashinki.com/shop/images/PLC-160…
I can’t see your links but you might want to look in your telephone yellow pages for "foam suppliers"… there should be at least one in most cities. They sell all kinds of foam and generally will also cut it for an extra fee.
You might also want to check out or ask at photography stores (*real* ones) since a lot of photographers carry their lenses and various other pieces in carriers, nestled into shaped-foam sheets.
HTH,
Diane B.
The foam always seems to get dirty before the filter needs to be changed. I always end us gently washing & reusing them. Is there a particular foam I can buy so I can make my own?
It is called open cell foam. The kind that I have seen that is sold in bulk is a larger mesh that is used for air conditioner filters. The vacuum cleaner filters have a finer mesh to catch finer particles.
My four year old son spilled chocolate milk in the back seat of my car. I soaked up the milk as soon as it happened (or so I thought), but a few days later my car began to STINK! After trying a carpet cleaner with a scubbie top, thinking it was just on the upholstery with no results, I finally took out the back seat of my car to find that the cushion/foam that the seat is made of is growing mold and covered with dried chocolate milk. Any suggestions to help get rid of the smell?? My car is a lease and I MUST get this taken care of! I did try saturating the seat with Kids N’ Pets cleaner and it is sitting outside drying, but last I checked it still smells… HELP!!
In my opinion I would try a steam cleaner that has an uphoulstry attachment and steam clean the seat, top and bottom including the foam. Cleaner and hot water with a steam cleaner should do the trick by ridding it of the milk and mold, and the heat will kill the odor causing bacteria.