From owner-dros@hgmp.mrc.ac.uk Mon Aug 16 16:02:53 2004 Return-Path: X-Original-To: dros-outgoing Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with SMTP id F35E07D18F for ; Mon, 16 Aug 2004 16:02:52 +0100 (BST) X-Original-To: dros-list@hgmp.mrc.ac.uk Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 5D3EA7D196 for ; Mon, 16 Aug 2004 16:02:52 +0100 (BST) Received: by mercury.hgmp.mrc.ac.uk (Postfix, from userid 6020) id 1B9977D18F; Mon, 16 Aug 2004 16:02:50 +0100 (BST) X-Original-To: bionet-drosophila@net.bio.net Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 2CC8C7D1C9 for ; Thu, 12 Aug 2004 23:53:29 +0100 (BST) Received: by mercury.hgmp.mrc.ac.uk (Postfix, from userid 60001) id AF55D7D0D8; Thu, 12 Aug 2004 23:53:27 +0100 (BST) To: bionet-drosophila@net.bio.net From: lara.sekhon@petermac.org ("Sekhon Lara") Newsgroups: bionet.drosophila Subject: fly food acids' safety Organization: BIOSCI/MRC Rosalind Franklin Centre for Genomics Research Message-ID: content-class: urn:content-classes:message charset="Windows-1252" X-Original-To: dros@net.bio.net X-Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id B96897D1CC for ; Thu, 12 Aug 2004 23:53:26 +0100 (BST) X-Received: from mail2.petermac.org (mail2.petermac.org [203.4.167.8]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 33E147D0D8 for ; Thu, 12 Aug 2004 23:53:21 +0100 (BST) X-MimeOLE: Produced By Microsoft Exchange V6.0.6556.0 X-MS-Has-Attach: X-MS-TNEF-Correlator: X-Thread-Topic: fly food acids' safety X-Thread-Index: AcSANASm0bi+aexvEdiSfgAAwOGtvg== X-To: "FlyQueries" Date: Mon, 16 Aug 2004 16:02:50 +0100 (BST) Sender: owner-dros@hgmp.mrc.ac.uk Precedence: bulk Hi I was hoping you could help me with a fly food query? We currently make up an Acid Mix in a fume hood as follows: dH2O 546ml propionic acid 412ml phosphoric acid 42ml In the lab we then add 92ml Acid Mix (and 175ml 10% Tegosept) to 10L fly food at up to 80 degrees Celsius and spend 30-45mins dispensing the food into vials. We have recently found out that these acids are a safety hazard and are wondering what other labs do re: the safety aspect of pouring fly food? At these low concentrations are these acids considered safe in normal lab conditions? We pour 10L four times a week so this issue is important to those involved in making it. The MSDS was not helpful regarding lower concentrations and higher temperatures. I hope you can help us out. Thanks in advance, Lara Sekhon Manager Media and Lab Services Research Peter MacCallum Cancer Centre East Melbourne Victoria Australia --- .