Hi, I'm also interested in purchasing this kind of chemical resistant trays, but to RCA clean ~10 wafers simultaneously. The only company that we have found is Tousimis, which have a wafer holder for 5 wafers. Do any of you know of any other supplier? About the wafer shipment box, do you know if it withstands RCA cleaning? (H2O2:NH4OH:H2O and H2O2:ClH:H2O at 80ºC) Thanks! Enrique San Andrés. UCM, Spain. -----Mensaje original----- De: Ivan Baturin [mailto:ivan@labfer.usu.ru] Enviado el: jueves, 13 de enero de 2011 7:09 Para: 'General MEMS discussion' Asunto: Re: [mems-talk] Single wafer wet processing tray/basket Hello! For this purpose we have just cut-off part of 25 wafers shipment box (leaving 1 or 2 slots)... it is made from something like HDPE and have removable top cover and bottom part as well. Box like this one: http://www.netmotion.com/graphics/oth/wafercase/can11a.jpg. Hope this can help you, at least as temporary way. Regards, Ivan