From grimm@MUSEUM.STATE.IL.USWed Aug 14 12:18:53 1996 Date: Mon, 3 Jun 1996 13:44:46 -0500 From: "Eric C. Grimm" Reply to: Research in Quaternary Science To: Multiple recipients of list QUATERNARY Subject: Ultrasound and Nitex I've had several emails about Nitex screening and using an ultrasound device to speed it up. A couple of follow up comments: 1. Pietra Mueller who works here at the ISM says that the ultrasonic probe works much better than the untrasonic water bath. 2. We obtained our Nitex screens from Tetko, Inc., 333 S. Highland Ave, Briarclifff Manor, NY 10510, Tel: 914-941-7767. The stuff is pretty expensive, but a couple of yards lasts a long time. It can be reused. We give it a good wash with water. We used to bleach it to theoretically dissolve any pollen grains stuck to it, but bleaching wrecks the Nitex. Microscopic examination after washing with water showed nothing stuck to it, so we now skip the bleaching. Eric Grimm ******************************************************************* Dr. Eric C. Grimm Office: 217-785-4846 Illinois State Museum Database: 217-524-0493 Research and Collections Center Fax: 217-785-2857 1011 East Ash Street E-mail: grimm@museum.state.il.us Springfield, IL 62703 USA 39d,46m,48s N, 89d,38m,34s W *******************************************************************