Search found 646 matches

by Ocker
29 Mar 2018, 13:31
Forum: Sourcing Materials & Eq Repairs
Topic: Repairs to Science equipment
Replies: 27
Views: 15082

Re: Repairs to Science equipment

Yes! But pension mob won't let me charge ,so would look at it, and see if it can be repaired.
If the coil is burnt out you would have to buy a new one. Either phone me or email me
by Ocker
27 Mar 2018, 06:25
Forum: Chemistry and Labware - General
Topic: Electricity to heat experiment
Replies: 10
Views: 4691

Re: Electricity to heat experiment

Yes I always used the 22# wire and rolled it round a pencil, now the heating effect is P=I E Watts = Amps × Volts this is constant regardless of what size wire/length you use
by Ocker
04 Mar 2018, 13:49
Forum: Chemistry and Labware - General
Topic: Electricity to heat experiment
Replies: 10
Views: 4691

Re: Electricity to heat experiment

So you have thick copper or brass rods through to the water and connect with screw lugs, to the resistance element.
The heating only occurs in the element, P=IE thats power in watts equals current in amps times voltage in volts
by Ocker
15 Dec 2017, 09:11
Forum: Biology, Physics...
Topic: Radiation sources
Replies: 21
Views: 7266

Re: Radiation sources

The lead seals in the radiation, then just make secure.
by Ocker
21 Aug 2016, 13:38
Forum: Sourcing Materials & Eq Repairs
Topic: transformers/powerpacks
Replies: 24
Views: 5058

Re: transformers/powerpacks

Yes you are right the amount of work to separate the two boards makes them not worth it, if paying labor costs, the older type were easy to repair,and better quality components.
Such is life.
by Ocker
20 Jun 2016, 10:36
Forum: Miscellaneous
Topic: Diazo paper
Replies: 18
Views: 6160

Re: Diazo paper

It was used to copy plans on transparent paper exposed to light then lightly spray with ammonia solution to set image but with modern plotters I think it would be obselet
by Ocker
17 May 2016, 09:13
Forum: Sourcing Materials & Eq Repairs
Topic: transformers/powerpacks
Replies: 24
Views: 5058

Re: transformers/powerpacks

P M me to let me know where you are, if not too far I will collect
by Ocker
17 May 2016, 09:05
Forum: Sourcing Materials & Eq Repairs
Topic: transformers/powerpacks
Replies: 24
Views: 5058

Re: transformers/powerpacks

Save them for me, I can often make one good from two crook especially the older type can all be fixed they are of basic construction the later type constructed on production line are too hard to apart to be worth it but a lot of goodies can be salvaged
by Ocker
09 Jun 2015, 19:48
Forum: Sourcing Materials & Eq Repairs
Topic: Repairs to Science equipment
Replies: 27
Views: 15082

Re: Repairs to Science equipment

I will be attending the ASET annual general meeting any Sydney siders can dump gear on me there I will take home and quote for repair, then have 1 trip to Sydney to return all gear. I also will be building some equipment and will offer it on approval. Espicially hi - voltage power supplies for drivi...
by Ocker
04 Jun 2015, 10:08
Forum: Sourcing Materials & Eq Repairs
Topic: Repairs to Science equipment
Replies: 27
Views: 15082

Re: Repairs to Science equipment

Thanks all, my plan is to do all repairs in school unless I have to take it away to use special gear to fix it.
Get all your broken equipment on a trolley or bench and I will decide what can be fixed or binned then work on it in a prep room.
If you have time I will also show you how to repair
by Ocker
02 Jun 2015, 16:17
Forum: Sourcing Materials & Eq Repairs
Topic: Repairs to Science equipment
Replies: 27
Views: 15082

Repairs to Science equipment

G'Day all, last week I visited a school in central coast area, and spent the day repairing equipment and enjoyed myself no end. All the stuff I loved in the job, and none of the mundane, so I have taken out an ABN No and will visit schools on invitation, to repair equipment and show labbies the way....
by Ocker
04 Feb 2015, 03:20
Forum: Safety with Chemicals
Topic: Dewar Flask for liquid nitrogen
Replies: 8
Views: 1942

Re: Dewar Flask for liquid nitrogen

I think I just said No!
Gotta love the nanny state
by Ocker
03 Feb 2015, 12:03
Forum: Safety with Chemicals
Topic: Dewar Flask for liquid nitrogen
Replies: 8
Views: 1942

Re: Dewar Flask for liquid nitrogen

I used to deal with a mob called "all ag services" they supplied the flask.
You could opt to pay extra fee for delivery & Piuck-up, but I used to transport in my car.
Would never do that these days, all the rules prevent it
All the best to friends out there Ocker!
by Ocker
23 Oct 2014, 10:13
Forum: Recipes and Pracs
Topic: Enzyme Prac that allows for variables in temp, pH and substr
Replies: 15
Views: 3620

Re: Enzyme Prac that allows for variables in temp, pH and su

Hey if it works that well, goodbye to liver forever
by Ocker
19 Sep 2014, 08:27
Forum: Announcements
Topic: ASET NSW 2 day conference
Replies: 24
Views: 4564

Re: ASET NSW 2 day conference

I just want to praise the organisers on a job well done
by Ocker
08 Sep 2014, 12:51
Forum: Recipes and Pracs
Topic: Benedicts Reagent wrong positive
Replies: 10
Views: 2202

Re: Benedicts Reagent wrong positive

Right on sister.
I saw anemail once with all the abreviations especially those pertaining to seniors
by Ocker
07 Sep 2014, 09:00
Forum: Recipes and Pracs
Topic: Benedicts Reagent wrong positive
Replies: 10
Views: 2202

Re: Benedicts Reagent wrong positive

Yep, all the above
I'm sitting here with my new tablet on fathers day and remembering all those times when things went wrong in prac tests and LMAO instead of tearing my hair out
I feel for you sunray but I now have a life
Ha Ha!
by Ocker
27 Aug 2014, 10:48
Forum: Chemistry and Labware - General
Topic: Penolphthalein Agar Prac
Replies: 11
Views: 2776

Re: Penolphthalein Agar Prac

Yeah! Smiley
I always chopped up left over gel real fine then put in microwave for about 20 seconds first then 10 secs at a time depending on amount but you can get a feel forit and add extra Na OH if necessary as it fases in acid atmosphere!
by Ocker
26 May 2014, 08:43
Forum: Recipes and Pracs
Topic: Pre-paring Solutions
Replies: 41
Views: 13346

Re: Solutions

When all else fails read the instruction manual (notes at top of page) Ha Ha