Search found 22 matches

by harveyradar
14 May 2023, 22:44
Forum: Biology, Physics...
Topic: Digital Oscilloscopes
Replies: 2
Views: 1437

Digital Oscilloscopes

What model digital oscilloscope do you have?
I 'm preparing a workshop on Oscilloscope use for a workshop at this year's Labcon and would like to compile a list of which brands and models of digital oscilloscopes schools have.
I will be most appreciative of your help in compiling the list.

Harvey
by harveyradar
07 Mar 2023, 21:09
Forum: Sourcing Materials & Eq Repairs
Topic: Wheatstone bridge
Replies: 14
Views: 1620

Re: Wheatstone bridge

Probably the most common use of a Wheatstone Bridge in your environment will be a lot of the electronic balances you have. Many of them have a Tare cell, which is an aluminum block with the four resistors fitted in such a way that when you put something on the balance's pan it distorts the aluminum ...
by harveyradar
20 Feb 2023, 22:35
Forum: Sourcing Materials & Eq Repairs
Topic: S23A Spectrophotometer error
Replies: 2
Views: 1102

Re: S23A Spectrophotometer error

Sadly they are the ones asking me!
I can't find anyone, in any country, who can answer the question after a week of asking.

Remember I'm that odd bloke who is not a Lab tech but rather the one who fixes stuff for the labbies.
Harvey
by harveyradar
17 Feb 2023, 08:57
Forum: Sourcing Materials & Eq Repairs
Topic: S23A Spectrophotometer error
Replies: 2
Views: 1102

S23A Spectrophotometer error

Have anyone ever had an E034 error come up on there S23A Spectrophotometer?
If so, what does it mean?

Thanks for looking ...
Harvey
by harveyradar
03 Jun 2022, 17:03
Forum: Sourcing Materials & Eq Repairs
Topic: Microscope Service/Repairs
Replies: 6
Views: 3399

Re: Microscope Service/Repairs

It has a few names, depending on which brand service handbook you look at.... index spring, stop spring, detent stop, and simply spring I prefer to call it the Detent stop spring, it seems to cover most bases! It would be improper to tout my own business on this forum so I humbly suggest you try a f...
by harveyradar
05 May 2022, 19:37
Forum: Biology, Physics...
Topic: Microwave apparatus
Replies: 10
Views: 4057

Re: Microwave apparatus

It would be worth giving Industrial Equipment & Control Pty. Ltd. a call on (03) 9497 2555 if you haven't already - as a repairer they seem to try very hard to find old stuff for me!

Harvey Edwards
(Science Equipment repairer - not really a Labbie!)
by harveyradar
09 Nov 2021, 22:28
Forum: Sourcing Materials & Eq Repairs
Topic: cuvette jammed in the spectrophotometer
Replies: 3
Views: 1021

Re: cuvette jammed in the spectrophotometer

It is not very hard to open up the S23A. First you have to remove the large wavelength selection knob - cant remember if it has a screw in the side or if it just pulls up. (removing the knob will not upset the calibration) Then you undo the screws underneath and lift the front so it opens from the f...
by harveyradar
10 Feb 2021, 20:08
Forum: Biology, Physics...
Topic: Operation of Steam Sterilizer
Replies: 7
Views: 7874

Re: Operation of All American Steam Sterilizer

Can those who regularly use the All American Autoclave Sterilizer tell me please what approximate number on the control dial their unit ends up being set at to maintain the pressure in the green zone. I had to reset the dial control on a unit recently and the factory provided instructions where a bi...
by harveyradar
31 Aug 2020, 20:52
Forum: Sourcing Materials & Eq Repairs
Topic: Repairs to Science equipment
Replies: 37
Views: 36439

Re: Repairs to Science equipment

As a Victorian based repairer I've repaired many, but for some parts are impossible to get or very expensive to have made.
So what we need to know is the brand and the model number to be able to comment on the possibility.

Harvey
by harveyradar
30 Apr 2020, 21:28
Forum: Sourcing Materials & Eq Repairs
Topic: Incubators
Replies: 3
Views: 3606

Re: Incubators

May I offer a few comments to help you select. An oven produces temperatures typically ranging from +10°C to +200°C though some may only go to 110°C, while an incubator typically ranges from 5 to 60 °C. Ovens are suitable for applications where general warming or heating is required. Incubators are ...
by harveyradar
29 Oct 2019, 20:44
Forum: Chemistry and Labware - General
Topic: Colorimeter MS-106B
Replies: 0
Views: 6359

Colorimeter MS-106B

I'm looking for the instructions for the Colorimeter MS-106B. Can anyone help please? They come in two different "branding" labels; "Mitchellsearch" and "chemical and scientific Aid Centre". they are identical and use a red, green and yellow LED. Colorimeter MS-106B sml...
by harveyradar
05 Jul 2019, 21:29
Forum: Sourcing Materials & Eq Repairs
Topic: water bath
Replies: 9
Views: 7812

Re: water bath

Firstly I must disclose that I commercially repair these hotplates in Victoria. I have put the original instructions up at http://principlespractice.com.au/manuals.html The main thing to remember in using them is the MODE key is your main friend - step it though each mode each time you want to opera...
by harveyradar
10 May 2018, 19:16
Forum: Chemistry and Labware - General
Topic: Digital Electronic Balance model 20002 purchased 2014 from Serrata
Replies: 3
Views: 4533

Re: Digital Electronic Balance model 20002 purchased 2014 from Serrata

try going to the Serrata Website, searching on 1052982
and click on the 'i' symbol in a blue circle on the right
by harveyradar
06 Mar 2017, 21:14
Forum: Chemistry and Labware - General
Topic: Vacuum pump oil - what do you use?
Replies: 2
Views: 3354

Re: Vacuum pump oil - what do you use?

As it looks like no-one wants to answer, I'll put my bit in. Firstly I should declare I service Vac pumps as part of my business supporting labbies here in Vic. First rule is use the oil recommended by the manufacturer - check the manual, check with the manufacturer/agent. Rule 2 - when rule 1 doesn...
by harveyradar
31 Aug 2016, 21:13
Forum: Sourcing Materials & Eq Repairs
Topic: transformers/powerpacks
Replies: 24
Views: 10325

Re: transformers/powerpacks

Just like to point out that an electrical licence qualification is not relevant to most of what has been discussed here. If anyone is looking for suitably qualified people to service transformers/powerpacks/and other pieces of electrical/electronic equipment found in science labs - look for technici...
by harveyradar
26 Aug 2016, 17:59
Forum: Sourcing Materials & Eq Repairs
Topic: transformers/powerpacks
Replies: 24
Views: 10325

Re: transformers/powerpacks

Thanks Richard I repair many of these each year and the same output bridge PCB mount on the front panel design is across many of the IEC power supply models and also those of the ST907/LY907 range from China. There are a few tricks used by service guys like myself that are not shown to just anybody....
by harveyradar
23 Aug 2016, 21:44
Forum: Sourcing Materials & Eq Repairs
Topic: transformers/powerpacks
Replies: 24
Views: 10325

Re: transformers/powerpacks

Ocker, what's the brand and model number of that which you describe as needing to separate the two boards? I can work out which one you are referring to.
Harv
by harveyradar
16 Feb 2016, 20:08
Forum: Biology, Physics...
Topic: Radio active source
Replies: 4
Views: 2884

Re: Radio active source

Do you have the 2 experiment guides (14 pages) written by Bruce Saunders using the Magic Source Random. of Radioactive Decay and Rate of Radioactive Decay If you need them contact him at hsphys@bigpond.com or visit his website: hsphys.com Disclaimer:I have no association with him or his company. Har...
by harveyradar
03 Aug 2015, 21:17
Forum: Chemistry and Labware - General
Topic: sterilizer
Replies: 1
Views: 2045

Re: sterilizer

Try U-Tech Medical Pty Ltd 24/14-16 Stanton Road Seven Hills NSW 2147 ph: 1300 488 324 they may be able to help - but I have no experience with them. Otherwise go direct to Prestige Medical in the UK www.prestigemedical.co.uk They have been quite helpful to me in the past Harvey - School Science Equ...
by harveyradar
11 Jun 2015, 00:37
Forum: Sourcing Materials & Eq Repairs
Topic: CRO service
Replies: 2
Views: 2210

Re: CRO service

I do such repairs in Melbourne so appreciate your needs. Any decent TV repair service company in your area should be able to handle it. A quick google showed me the following (I don't know anything about them at all) http://betterview.com.au/television-repairs/ http://spencer-electronics.com.au/ htt...