Search found 410 matches

by bigmack
10 Dec 2020, 12:51
Forum: Safety with Chemicals
Topic: Hazardous Chemical Register
Replies: 25
Views: 6261

Re: Hazardous Chemical Register

Ahhh , I just found this on the Assist Spreed sheet .....it kinda explains why ....Assist got their data from Chemwatch . Details about recommended concentration restrictions, safety and handling information or the nature of the specific chemical. Please refer to the 'Pictograms and Notes' page for ...
by bigmack
10 Dec 2020, 10:38
Forum: Safety with Chemicals
Topic: Hazardous Chemical Register
Replies: 25
Views: 6261

Re: Hazardous Chemical Register

I have finally converted to XL . I started by downloading the Database from Science assist a few years ago , picking and choosing off that to match what we have and have been using Chemwatch simultaneously until now when Chemwatch converted 95% of my manifest to garbage and made it totally unusable ...
by bigmack
07 Dec 2020, 13:27
Forum: Miscellaneous
Topic: Chemwatch have done it again
Replies: 34
Views: 10018

Re: Chemwatch have done it again

Chemwatch can be useful for adding new things to my XL spreadsheet . Particularly for the rest of the school . If I add a chemical in Chemwatch , say "Blitzem snail pellets" , them print a report on that chemical , it comes over with all the GHS and DG info I chose and I can copy and paste it instea...
by bigmack
07 Dec 2020, 12:57
Forum: Miscellaneous
Topic: Chemwatch have done it again
Replies: 34
Views: 10018

Re: Chemwatch have done it again

Well I did switch to XL but today I looked at our manifest on Chemwatch and there were approx 180 random entries in the Science section alone . What is more frustrating is that almost all Chemicals are listed as Multiple vendor and so I can't even edit the amounts anymore .I was told that they must ...
by bigmack
04 Dec 2020, 14:31
Forum: Sourcing Materials & Eq Repairs
Topic: Solar energy motor and Fan
Replies: 3
Views: 874

Re: Solar energy motor and Fan

Woow, 50 years old ,worth a try Merilyn .....but may be more to that one though :whistling2:
by bigmack
04 Dec 2020, 13:00
Forum: Sourcing Materials & Eq Repairs
Topic: Solar energy motor and Fan
Replies: 3
Views: 874

Solar energy motor and Fan

We got these out yesterday and they did not work ...only one apparently . OK to be fair , it was overcast and wet ,so the teacher used a couple of microscope lamps . We have done this in the past and it is usually enough to get them spinning if you hold the lamps right up to them . So I got them out...
by bigmack
23 Nov 2020, 10:37
Forum: Forum Support Desk
Topic: Automatically Logging Out
Replies: 9
Views: 1420

Re: Automatically Logging Out

works fine on my iphone but PC logs me out if I click on home or a link to another thread
by bigmack
17 Nov 2020, 14:38
Forum: Recipes and Pracs
Topic: Making Electro magnets
Replies: 8
Views: 1610

Re: Making Electro magnets

Good question Maria .Gosh , I thought our regular suppliers still sold it but no .....it's a lot worse than that as you say .
You can get 500KG spools @ around $2,500 from China :crazy:

or about 30 metre reels from the UK .
by bigmack
16 Nov 2020, 12:56
Forum: Chemistry and Labware - General
Topic: Electrophoresis Kits
Replies: 18
Views: 1256

Re: Electrophoresis Kits

75v supply.jpg Here's the schematic that the electronics teacher will understand .I added a 100 ohm resistor . This is only as a kind of fuse that will go up in smoke should the kids accidentally short the output leads rather than burn out the diodes and transformer . I'm not saying that this is th...
by bigmack
16 Nov 2020, 12:54
Forum: Chemistry and Labware - General
Topic: Electrophoresis Kits
Replies: 18
Views: 1256

Re: Electrophoresis Kits

Hi Bigmack, How do we get a hold of the 3D pattern please? I would love the 3D info so we can make it as well. Thanks oh yes please that would be great. Hopefully this link works .if not I can PM you the files . https://www.thingiverse.com/thing:3321702 I changed things a bit . the original used ba...
by bigmack
11 Nov 2020, 10:45
Forum: Recipes and Pracs
Topic: Making Electro magnets
Replies: 8
Views: 1610

Re: Making Electro magnets

I reuse the wire . We use cotton covered stuff as the plastic insulated stuff tends to melt and hurt children :whistling2: Electromagnet kits.jpg I prepare the ends ...IE cut back the cotton and add a dab of fingernail polish or PVC to stop it unravelling. We find a 2 meter length is ample .Any long...
by bigmack
09 Nov 2020, 14:57
Forum: Chemistry and Labware - General
Topic: Electrophoresis Kits
Replies: 18
Views: 1256

Re: Electrophoresis Kits

It printed OK . Got a piece of Perspex cut at TAS for the bottom and siliconed it in place . All setup waiting for the Agar to cool enough to pour . ready for casting.jpg When it had cooled ,the Comb and end stops come out cleanly . :clap3: This was my biggest concern but it was fine. Combs come out...
by bigmack
09 Nov 2020, 10:45
Forum: Forum Support Desk
Topic: Photo files too big for chemtalk
Replies: 8
Views: 677

Re: Photo files too big for chemtalk

Still not working Alice :console:
8F95FDC4-20C6-41EB-86A3-FB5DB24A18D5.png
by bigmack
06 Nov 2020, 13:52
Forum: Chemistry and Labware - General
Topic: Electrophoresis Kits
Replies: 18
Views: 1256

Re: Electrophoresis Kits

I been asked for 8 trays .We only have 5 and they only have 4 sample slots . found one on thingverse that looks good . 3D printing it now . It has to be cheaper than buying one . Fingers crossed [-o< Gel tray.jpg Failing this , I'll be Laser cutting some up in TAS out of Acrylic sheet . No way I'm p...
by bigmack
06 Nov 2020, 13:24
Forum: Safety with Chemicals
Topic: Chemical Sump/Pit
Replies: 8
Views: 688

Re: Chemical Sump/Pit

macca wrote: 06 Nov 2020, 12:24
Science sump was fine, all they found in the Art Department end was blocked up with paint brushes.
Haa Macca , sounds like what ends up in the Lab sink S-bends :cheesy:
by bigmack
06 Nov 2020, 11:00
Forum: Forum Support Desk
Topic: Photo files too big for chemtalk
Replies: 8
Views: 677

Re: Photo files too big for chemtalk

Just had to try .
still couldn't send a pic straight off phone ( approx 3000 x4000 pixels)
had to keep resizing it .
seems maximum size is around 1700 pixels on the longest side . 1750 pixels was file too large error
by bigmack
06 Nov 2020, 10:39
Forum: Safety with Chemicals
Topic: Chemical Sump/Pit
Replies: 8
Views: 688

Re: Chemical Sump/Pit

You would think so wouldn't you Merilyn .
Being the curious type ,I double checked , and yup , its just a box sitting on a concrete slab .( lifted it up and looked underneath it ).
Our labs are fairly new ...read 20 years old .
I might check with the GA if there are any plans around.
by bigmack
05 Nov 2020, 14:25
Forum: Safety with Chemicals
Topic: Chemical Sump/Pit
Replies: 8
Views: 688

Chemical Sump/Pit

Labbie said that most DET schools have a storage Pit for Chemicals . https://www.chemtalk.com.au/viewtopic.php?p=46717#p46717 I remembered seeing something under our building so went had another look . I was surprised. There certainly was a tank , but it was connected to the floor drains in our Chem...
by bigmack
05 Nov 2020, 12:39
Forum: Forum Support Desk
Topic: Photo files too big for chemtalk
Replies: 8
Views: 677

Re: Photo files too big for chemtalk

They need to be no larger that 800 pixels on the longest side. I use an App on my Iphone called "resize it". It also allows you to rotate pics if needed. Can't remember if it was free or cost @1.50 Maybe Westlabs can add the Auto resize feature to the board . Most Forums using the latest phpboard wi...
by bigmack
30 Oct 2020, 10:56
Forum: Chemistry and Labware - General
Topic: Electrophoresis Kits
Replies: 18
Views: 1256

Re: Electrophoresis Kits

Thanks for your reply. I was looking at these ones from Southern Biology Bluegel Electrophoresis Starter Kit Any feedback? They look like they can be used with both dye and DNA samples? I had a quick look ,very nice units and the internal light and special dye in sample is a big improvement on the ...