Search found 1048 matches

by bigmack
20 Apr 2026, 12:24
Forum: Forum Support Desk
Topic: Bots attacking forum
Replies: 6
Views: 23327

Re: Bots attacking forum

What ever Westlab is doing is working great . Other forums I am on are now regularly crashing and dead for hours due to these Bot attacks , often with less than 1000 guests .
Chemtalk regularly has 35,000 "guests" online and it is chugging along nicely .
Lets hope it stays this way . [-o<
by bigmack
20 Apr 2026, 12:18
Forum: Announcements
Topic: Chemtalk 20years old
Replies: 9
Views: 2005

Re: Chemtalk 20years old

Bump

Less than a month to go
by bigmack
20 Apr 2026, 12:05
Forum: Sourcing Materials & Eq Repairs
Topic: Cheap acetone and HCl
Replies: 6
Views: 149

Re: Cheap acetone and HCl

We've got Diggers Acetone in our Flammables Cabinet.Thats what I send out when requested .No complaints .
There is also the dregs of Bondall HCl in a 5L container in Corrosives .Agree , It's probably just as good for junior classes and probably most senior classes too .I just like to use the smaller ...
by bigmack
02 Apr 2026, 16:16
Forum: Sourcing Materials & Eq Repairs
Topic: tube nozzle/tap connector for water
Replies: 1
Views: 449

Re: tube nozzle/tap connector for water

I remember going down this route a few years ago in NSW .
Found those same hose barbs . I’m pretty sure Reece's plumbing ordered them in for me . Was bloody expensive IIRC .

Have you asked Westlab ? They do full Lab fitouts so
I’m sure they would have the hose adaptors and standard aerators ...
by bigmack
31 Mar 2026, 10:41
Forum: Chemistry and Labware - General
Topic: Test tube racks - Wood or aluminium?
Replies: 4
Views: 1438

Re: Test tube racks - Wood or aluminium?

What she said 100%

incidentally , I believe those metal racks would be Stainless steel .Aluminum doesn't last very long in a dish washer :-(
by bigmack
04 Mar 2026, 12:29
Forum: Recipes and Pracs
Topic: Osmosis and diffusion
Replies: 32
Views: 48697

Re: Osmosis and diffusion

We just did that I believe Rosalie .
They put Glucose is one tubing and then thoroughly rinsed it and put in a boiling tube and only just cover it in water . Also needed about 5% Glucose solution to work .

Do the same with the starch in tubing .

Then as soon as they have added the water , they ...
by bigmack
03 Mar 2026, 17:14
Forum: Sourcing Materials & Eq Repairs
Topic: Autoclave / 'all american' electric pressure steam steriliser
Replies: 12
Views: 1915

Re: Autoclave / 'all american' electric pressure steam steriliser


An autoclave is a pressure vessel, you must have it checked and tested each 12 months.

That must be a Victorian thing Anna ?

Another ridiculous pile of compliance . For every Highschool pressure cooker there is possibly several hundred in the homes of the students that would never be annually ...
by bigmack
27 Feb 2026, 14:14
Forum: Sourcing Materials & Eq Repairs
Topic: Autoclave / 'all american' electric pressure steam steriliser
Replies: 12
Views: 1915

Re: Autoclave / 'all american' electric pressure steam steriliser

Can't say I've ever heard of getting them tested before . Now you mention it , I'm getting all worried about it .

In the good O'l days , we used a "normal" pressure cooker that had a pressure gauge and a safety valve on it .So long as it reached pressure , you knew you were good .
Now all these ...
by bigmack
27 Feb 2026, 08:53
Forum: Announcements
Topic: Chemtalk 20years old
Replies: 9
Views: 2005

Re: Chemtalk 20years old

RosalieL wrote: 27 Feb 2026, 08:19 PS bigmack - how did you just happen to work this out?? :clap3: :party:
Just happened to accidentally click on "Members" and as they were in Join date order , I took a punt :D
Members.png
by bigmack
25 Feb 2026, 22:15
Forum: Announcements
Topic: Chemtalk 20years old
Replies: 9
Views: 2005

Chemtalk 20years old

Well not quite , but not far off .
Friday 12 May 2006 first member voice joined .
:clap3:
IMG_3869.jpeg
by bigmack
25 Feb 2026, 08:53
Forum: Sourcing Materials & Eq Repairs
Topic: Specimen Supply – Sourcing, Pricing & Quality
Replies: 13
Views: 2751

Re: Specimen Supply – Sourcing, Pricing & Quality


New England Lamb Brains. Packaged in these neat red boxes with 4 frozen brains in individual plastic bags.


Yeah , that's the ones .
Hmmm , maybe I might contact them and see if they have a frozen truck going north [-o<


Next time try soaking them in metho for 24 hours. It firms them up a bit ...
by bigmack
24 Feb 2026, 15:10
Forum: Sourcing Materials & Eq Repairs
Topic: Specimen Supply – Sourcing, Pricing & Quality
Replies: 13
Views: 2751

Re: Specimen Supply – Sourcing, Pricing & Quality

Arrrrg
Our local Butcher seems to have changed his supplier of Brains .
I was warned by my Wife who works at another school around here that the brains they got were all mush and totally useless .
Now this is from the same place I get mine and they have always been good .

Well I just got some and ...
by bigmack
20 Feb 2026, 12:26
Forum: Sourcing Materials & Eq Repairs
Topic: Tablet press
Replies: 8
Views: 1372

Re: Tablet press

PeterK wrote: 20 Feb 2026, 10:54 Think that will move you up the watchlist. We buy all the precursors and then we are suddenly buying a tablet press. :D
:clap3:
by bigmack
18 Feb 2026, 11:58
Forum: Sourcing Materials & Eq Repairs
Topic: Microscope camera software - Digitech QC-3197
Replies: 2
Views: 929

Re: Microscope camera software - Digitech QC-3197

From what I can see , it was listed as suitable for Windows 2000, vista, XP ,win7.
I'm guessing that's why there is no support for it ....and probably why they were gifted to you .

Found it listed on Digitech website but the driver download just returns Forbidden 403 error .

http://www.digitech-i ...
by bigmack
12 Feb 2026, 22:06
Forum: Safety with Chemicals
Topic: Audit time
Replies: 2
Views: 1948

Re: Audit time

A small point . MSDS were changed to SDS in June 2015
The change from Material Safety Data Sheets (MSDS) to Safety Data Sheets (SDS) was mandated by OSHA, with the transition officially taking place by June 1, 2015. This change was part of the adoption of the Globally Harmonized System of ...
by bigmack
06 Feb 2026, 16:09
Forum: Sourcing Materials & Eq Repairs
Topic: balloons
Replies: 5
Views: 1360

Re: balloons

Was just in Woolies and they have 100 balloons back again :clap3:
IMG_3800.jpeg
by bigmack
05 Feb 2026, 10:09
Forum: Sourcing Materials & Eq Repairs
Topic: balloons
Replies: 5
Views: 1360

Re: balloons

I get mine from Coles .Have 50 packs for $6 in store .
Balloons.png
by bigmack
03 Feb 2026, 14:07
Forum: Safety with Chemicals
Topic: same chemical - different sds
Replies: 6
Views: 1692

Re: same chemical - different sds

Just got Sodium Acetate Anhydrous from Westlabs ( home brand)
It also has a Chemwatch SDS and is Hazardous whereas the Chem supply brand is not hazardous .
by bigmack
03 Feb 2026, 08:37
Forum: Biology, Physics...
Topic: party poppers
Replies: 3
Views: 1113

Re: party poppers

Can't say I've ever seen it before either .
Give them a broom ,goggles and let them have fun.
by bigmack
30 Jan 2026, 10:04
Forum: Biology, Physics...
Topic: purchasing a dissolved oxygen meter
Replies: 3
Views: 956

Re: purchasing a dissolved oxygen meter

LOL , don't buy one ......unless you have a big budget and expect to keep spending to keep it working .