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Mr. Riechel from Snohomish WA is requesting Lab Equipment through DonorsChoose, the #1 classroom funding site for teachers.

Got Vacuum Filtration? We don't, but really need it.

My students need chem lab equipment to filter extremely fine particles

  • $584 goal

Hooray! This project is fully funded

Hooray! This project is fully funded

My Students

AP Chemistry students, as well as general chemistry students, by virtue of signing up for the class, are highly motivated and responsible. They often go on to become the next generation of science and technology experts, making great contributions to all our lives. They willingly put in hours over the summer and on weekends in the lab, in addition to regular school days, to succeed in this challenging class. These are our highest achieving students.

These are the kids for whom extra resources make a huge impact.

By its nature, chemistry requires specialized equipment; some of which is slightly exotic and not found in a regular high school lab. Supporting these kids by helping to supply needed equipment is probably one of the most effective ways to make a direct difference in our public educational system.

My Project

A typical chem lab involves reactions that create very fine particles that must be separated from a solution. The gooch crucible contains a very fine, glass filter to trap those particles. The rubber crucible holder provides a seal between the crucible and the collection flask for the waste solution. The aspirator connects to the sink faucet and uses Bernoulli’s principle to generate low pressure through connecting to the filter flask that sits beneath the crucible.

A typical experiment using this equipment is determining the percentage of silver in a "silver" dime.

Dissolving the metal in nitric acid, then turning the silver atoms into small particles of solid silver chloride that are caught by the vacuum filtration system, makes up this lab.

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4 donors4 donors have given to this project.

This project will reach 295 students.

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Where Your Donation Goes

Materials Cost Quantity Total
American Educational Clear Borosilicate Glass 1000mL Bomex Filtering Flask • Amazon Business $16.50 9 $148.50
Plasticoid 3332H60PK M29 Stopper Natural Rubber Crucible Holder, 57mm Length (Pack of 12) • Amazon Business $110.05 1 $110.05
Humboldt H-12100 Stainless Steel Aspirator Filter Pump, 3/8" NPT, 3" Length • Amazon Business $102.60 1 $102.60
Kimble 28260-303 Glass 30mL Fine Low Form Gooch Crucible, with Kimflow Fritted Disc (Case of 12) • Amazon Business $61.60 1 $61.60

Materials cost


Vendor shipping charges


State sales tax


3rd party payment processing fee


Fulfillment labor & materials


Total project cost


Suggested donation to help DonorsChoose reach more classrooms


Total project goal


How we calculate what's needed

Total project goal


3 Donors


Donations toward project cost


Donations to help DonorsChoose reach more classrooms


match offer


Match offer toward project cost


Match offer to help DonorsChoose reach more classrooms


Excluded support for DonorsChoose


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Project Activity

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