Inquiry (采购产品): buying laser doing laser diffraction experiment in college on biological samples. Need a laser source to get the diffraction pattern and to take photograph. The pattern should be bright enough to be photographed. **** Hidden Message ***** Sumanta borthakur Assam, Guwahati 781007 IND Company: B Borooah College E-mail: montuborthakur@yahoo.com **** Hidden Message ***** montuborthakur@yahoo.com
