Australia's Science Forum

Just outside one of our Labs , some Native Bees made a hive underground . Native Bees can't harm you . One of our teachers is into native Bees so he built a hive Box to encourage the bees out of their underground Hive . The kids are quite fascinated by them . every so often he opens it to see inside...

Been Googling ABS . Apparently its glass transition temp is 105 degC so I guess if your dishwasher was very hot , close to 100deg , it's quite possible it may start to deform . Likewise , if your dishwasher doesn't run quite as hot , say around the 80 deg Mark , it wouldn't effect it .

Thanks for the Photographic developing trays . They certainly do look like that's what they were . Interestingly, all the ones available nowadays have a pouring spout molded into the corner .

They certainly are a lot cheaper than the ABS ones available from Haines or SCA.

I found this , thought it might be helpful . It also has a list of first aid for various substances

https://www.uq.edu.au/_School_Science_L ... epare.html

Thanks Prima ,they sound good .
Just noticed Science Supply Aussie has what appears to be the same ones and quite a few bucks cheaper.

Hi all , we have these plastic dissection trays . They are dated 1986 but are still as good as the day they were made . Looking to get some more as they seem to be very handy for setting ISRP pracs ready , unfortunately I never seem to have enough. Been looking around and can't seem to find anything...

easy to "unplate" them . Before Copper plated.jpg beaker of HCl 0.1M . old scrap of copper . positive ( Red ) on the Carbon .Negative (Black) on the scrap of Copper. Unplating.jpg Few minutes Later ..... Carbon cleaned.jpg Warning , it does make a bit of Chlorine gas . So best off in the F...

I open them in a bucket of bleach . You could wear gloves when you do it , I don't . Hold them under with one hand , pull out the stopper with the other . If you do it slowly , Bleach fills the inside ,and the air inside has to bubble up through the bleach to get out . Then I just wash them as normal.

I'm pretty sure it was salicylic acid that our Chem teacher used last year . he'd never used it before . Next minute , I'm driving the Physics teacher around to the ER ( hospital is only 500m up the road) with a bad Asthma reaction . This year he didn't use it , no issues from the physics teacher . ...

About 4-5 years . No issues with it so far

We got one of these off Serrata and the teachers have been happy with it so far. heating Mantle.JPG Note: it has a Power controller not a Temperature controller .Despite saying Temp adjust on the front . This in my opinion is a better option than a temp controller . Why, ...because when teachers who...

I think we did this last year . We still had some old optical tracks from years ago . Put a Light box at one end , a Datalogger with Lux sensor ( probably could have used a regular Lux meter ) at the other and used a IEC Polaroid Filter ( HL1883-060) in between . I think they plotted Lux against the...

We get ours from
Northern Co-Operative Meat Company Ltd
10615 Summerland Way
Casino NSW 2470

(02) 66600790
Email: shipping@cassino.com.au

They are free to schools . They deliver to our local butcher who we have to pay $15 delivery . They are fresh .

Note : the double S in the email is correct .

Not sure how to post them here? Click on "full editor and preview" Then when you write a reply , you will see an attachments button . he you can find a pic or file on your PC and attach it . Just be aware that pics have to be resized to 800x600 pixels or they will be rejected . You can re...

MariaQ wrote: ↑18 Feb 2020, 07:24 and BTW Im still waiting for a reply to my email........

Give them a ring . Have your invoice /order number ready and they will sort it there and then …….well that was my experience .

Alas I just dug our set out which does have the index but its the 2nd edition 1999, sorry .

have to wonder how much different they are and if one could be compared to the other . If you are interested I might see if I can copy some for you .

May gets some hints Here

MariaQ wrote: ↑11 Feb 2020, 08:47 Thing is, I didn't think I was buying cheap, I was buying what I saw in the catalogue which matched my previous purchase.

That's what I did too Maria .

Incidentally , the new MTA catalogue arrived yesterday and I looked up the switch and sure enough they have the same deceiving picture .

Had a similar problem last year . Pic in Catalogue showed a Switch that was labelled with OBB ……we've had them before and they were good . When my parcel arrived they were a Chinese copy . One screw instead of two holding the lever so it could easily loosen and be turned out of alignment and the spr...

MissKat wrote: ↑06 Feb 2020, 10:08

bigmack wrote: ↑06 Feb 2020, 09:28 Curious what the metal in water Demo is

Sorry, I missed out the 'alkali' part in the title.

Oh thanks Misskat ….LOL , should have worked that out