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Conductivity Indicator Tester

Avg. Ratings: 4.0 (1 Review)
300M
Nine Level Conductivity Meter shows the relative conductivity/resistance of liquids and solids. As the conductivity of the tested material increases, the number of glowing red LEDs will increase to a maximum of 8, which indicates a very good conductor. There will be zero glowing red LEDs if the material has a very low electrical conductivity (is a good insulator). The Nine Level Conductivity Meter is well constructed. When treated with proper care and concern it shoul provide you with many hours of exemplary service. After each use, the probes should be thoroughly cleaned and dried. When storing, the 9V battery should be unsnapped from the battery posts. 1.9V battery is required, but is not included.



   
 

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Item # Description Unit Availability Price Quantity
470007-076 Conductivity Indicator Tester
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REVIEWS (1)

Total Ratings: 1
Avg. Ratings: 4.0 out of 5

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KG Education / teacher / Ypsilanti, MI
Yes, I recommend
We bought these this year with ACH-Hach grant money. While they are pricey, they have worked VERY well so far. These take 9V batteries (not included). We used them in our metals-nonmetals-metalloids lab (on samples to show metals conduct best) and in our covalent vs. ionic bonds lab (to show that ionic solutions conduct and covalent solutions do not). Compared to the ones from another supplier we have used for several years, these seem sturdier (probes seem stronger), are slimmer (so they fit into smaller beakers), and do not have an on-off switch (so kids can't leave them on--HOORAY!). Our students made solutions in a ceramic spot plate--so a small amount of solution was used--and still got great results. (Each tester comes with a plastic spot plate that we have not used yet.) The only issue we've had so far is the LOW-HIGH light process. Students start by pressing the LOW button and recording the number of red lights they see, then they have to press the HIGH button to record the number of red lights. While this is preferred to the results from our previous ones, it is still a bit confusing to explain to struggling student.
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BOREAL.com associate Published 02/14/2018
Thank you for sharing!
 
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