Australia's Science Forum

Well Kim, it's a small world. I have been at Red Bend since 1981 so very likely our paths have crossed. I am the longest serving staff member (apart from Jenny Neilsen) she may have been here when you were here but the others are long gone! Not much has changed, glad to hear you enjoyed your time he...

Dear All - Wondering "who ya gunna call" when it comes to servicing portable fume cupboards. We are located in the central west and really need someone in the local area. Any suggestions? We have a Labworks RFC - 101, relatively new, and the last time it was serviced was by Hercules Plasti...

Thanks guys, for the tip on Barium sulphate and indian ink for faded graduations on glassware and thermometers. Also like the liquid paper remedy as well. Off to give it a go!! Cheers. Judy

Dear All - Have a problem with thermometers which (over the years) have lost their graduations. They are 110C in graduations of 0.2C and used for a couple of Yr. 11 Pracs requiring precise measurement of temperature. I have tried to find a supplier so that we might have some new ones, but to no avai...

Yes, me too Meg.

judygould@redbendcc.nsw.edu.au

Thanks so much. Cheers. Judy

Thanks Graeme - will definately look into the cheese cutter and TAS bench hook thingee. Cheers. Judy

Dear All - Just wondering how you cut the blocks of agar into the 1,2,3cm cubes. I always have trouble using a knife and ruler, I find the knife seems to skid off to one side in the jelly-like substance and I can never get a reasonably accurate square. I was trying to talk one of the maintenance fel...

Dear All - On the subject of burning magnesium in crucibles - anyone have a sure-fire way of removing the magnesium from the bottom of the crucible? I have tried acids (e.g. hydrochloric, oxalic) also napisan and elbow grease! Cannot get the crucibles back to their lovely porcelain white - am I bein...

Dear All - Many thanks for your suggestions - knew I could count on you guys! And yes, not the best time of year for flower dissection pracs, but can't be helped! Once again Thanks. Judy.

Dear All - Just need a little advice on flowers for dissection. We need to keep it very simple! Not being a gardener myself I have no idea which flowers would be suitable, could you name flowers you have found best. Many thanks. Cheers - Judy

Dear Rosalie - Whatman produce a narrow range pH paper (pH 4 - 6) Also Science Supply Australia (pH 3 - 6) However please refer to previous posts, I have had a great deal of difficulty keeping my narrow range papers "viable" We haven't had any success the last couple of years and I now hav...

Dear Tina - Purchased my Tip cleaning set of 10 from Q Stores for approx. $8 The item No: is 1969242. Hope this helps. Judy

Dear All - Just discovered "Screened" Methyl Orange indicator!!!! I have always battled trying to decide the "end Point" when using regular Methyl Orange for acid/base titrations - can never decide exactly when the orange goes to yellow or vice versa, very "iffy", alway...

Dear Lisa Just catching up - Can I put my hand up for a copy of your sideshow. Many thanks. Judy

judygould@redbendcc.nsw.au

I have purchased Thymol blue from Science Supply Australia (5g for approx $35) I notice you can also purchase from Q stores for around $45 I am unaware of a prepared solution, I think it is one of those indicators you need to freshly prepare each time. Hope this helps. Judy.

Dear All - Welcome back for 2009! Anyone using this Risk assessment produced by Phillip Crisp? We subscribed late last year to see what it was all about! (Still waiting!!!) I would be interested in comments, good or bad. Is it helpful or does it just create extra unnecessary work for the lab tech, w...

Dear Sassi - Can't believe you have been mistreated by your Science staff!!! I have found it's usually the ones that are not very sure of themselves or their subject and are completely disorganised - they tend to bite!! But the very good teachers, the ones that really know their stuff, they are ALWA...

Dear Chemtalk Family - Just finished the enzyme prac using Potatoes & Hydrogen peroxide. We were happy with the temperatures and substrate results however the pH results were'nt as expected! We were looking at pH 3, 6, 8, 11. pH 11 excellent - but pH 3, 6, & 8 the bubbles were the same heigh...

I would love the poster site as well, Thank you.

My e-mail address is: judygould@redbendcc.net.edu.au

Judy.

Red Hibiscus in diluted Metho (Pink) in acid sln (orange) in alkali sln (blue- green) red Rose "" (Pink) '' (Pink) (Olive green) red canna " (red) " (orange) "" (dark green) red dahlia " (red) (orange-red) "" (amber) mauve impatiens " (mauve) " ...