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Iron metal filings, 30 gUse these fine mesh iron filings to show magnetic fields of magnets. For less mess, sprinkle iron filings into a clear plastic page protector or into a plastic petri dish. Hold the magnet underneath to see the filings form the pattern of its magnetic field.
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- Friday, January 11, 2013
Fine and fast!
Reviewed By: Megan
The filings are very fine, and shipping was super fast. Great service and excellent quality.
- Sunday, November 20, 2011
the perfect amount
Reviewed By: jordan
There are plenty of filings in her for several experiments! We're using them in the petri dishes to show the field of magnetism, and there's enough in there for at least 6-8 sets!
- Tuesday, July 12, 2011
Reviewed By: Elizabeth
This is the perfect amount of iron filings for a magnet lesson demonstrating the pull of north and south poles. I agree with both previous posters on using a container in which to demonstrate the activity. Thanks again, HST.
- Monday, January 24, 2011
The Perfect Amount
Reviewed By: Lorrie
This item contains just the right amount of shavings to experiment with. I also purchased a set of petri dishes in order to contain the filings as we work the experiments. As the previous reviewer pointed out, these should be worked with in an enclosed container - especially if your kids are younger scientists.
- Saturday, December 20, 2008
Reviewed By: Suzanne Mallery
Loose iron filings allow a lot of flexibility in types of experiments, but they are not a great idea for younger children, particularly without close supervision. For elementary aged kids, I recommend getting the iron filings in a sealed case or using these to make your own sealed apparatus. In addition to being "messy," loose iron filings can be a health hazard if they are inhaled or if they get into eyes. We do have a container of these, but the adults use them to make experiment set-ups for the kids (e.g. iron filings in oil in a sealed bottle, iron filings in a CD jewel case that is well-sealed around the edges, etc). We don't let the kids have a jar of them to use on their own. If you're trying to decide whether your child is ready to work with loose filings, read the MSDS (link above) about necessary precautions. Having said that, there are some types of experiments and demonstrations that you can't do unless you have loose filings, and using loose filings to give "hair" to a magnet is a crack-up. I simply recommend knowing the safety precautions and making informed decisions about how much supervision any given child needs when working with iron filings.
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