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<http://code.google.com/p/homecmos/wiki/Vendors>
# cleanroom accessories
* Harmony Cleanroom <http://www.harmonycr.com/>
# etchants
* Local grocery or home improvement store
* * Whink brand rust remover contains 2-3% HF.
* Duda Diesel <http://www.dudadiesel.com/>
* * HCl for metal etching
# photoresist
* Injectorall <http://www.injectorall.com/>
* * Shipley SP24 positive photoresist. DNQ-novolac based, peak sensitivity at 405nm.
# solvents
* Duda Diesel <http://www.dudadiesel.com/>
* * Technical grade acetone and isopropanol. May have lower impurity levels than hardware/paint store grades.
* Local hardware store
* * Acetone, denatured alcohol. May have lower purity.
* Harmony Cleanroom <http://www.harmonycr.com/>
* * 99% isopropanol / 1% DI water.
* Pharmacy or some grocery stores
* * Isopropanol (rubbing alcohol). Go for the highest concentration you can get (91% is ideal)
# wafers
* MTI <http://www.mtixtl.com/> - Materials science related supplies including wafers up to 6 inch diameter sold in units of one.
* University Wafer <http://www.universitywafer.com/> - Has a wider selection than MTI but minimum orders are high.
* Singapore Optics Shop <http://optics.sg/main.html> - This supplier does not have much of a minimum order (Keep orders above or equal to 5 wafers) but prices can be quite high for small wafers. They do have other wafers like Germanium and also has quite a lot of other cool stuff. They do ship to countries outside Singapore. Price will include SGD $30 handling fee.
* Latech Scientific Supply <http://www.latech.com.sg/> - I am putting them back on here after they have updated their information. They do have a minimum order of 25 pieces for wafers of size 3 inches and above. According to their sales representative, wafers smaller than 3 inches can be bought in small quantities. If you want to get a large amount of wafers, I suggest using Latech as their prices are cheaper than the ones at Singapore Optics Shop. They also have some lab stuff that experimenters might be interested in.
# other vendors
* <http://www.cleanroom.byu.edu/EW_Purchase.phtml>
* <http://mmoll.web.cern.ch/mmoll/links/silicon.htm>
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