spectrophotometer? - London Biohackers

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Date: Thu, 18 Oct 2012 16:09:49 +0100
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From: simon rose <excaliburor...@googlemail.com>
To: London Hackspace Biohacking Group <lhs-biohack...@lists.kentgeek.org>
Subject: Re: [Lhs-biohacking] spectrophotometer?
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Actually, the phototransistors I have are, according to their specs, most
sensitive in the green part of the spectrum so this might be a problem but
we can probably work round this.

On Thu, Oct 18, 2012 at 4:00 PM, simon rose
<excaliburor...@googlemail.com>wrote:

> We have some of the parts for some of these  already. I have a couple of
> phototransistors, (one is already connected up and has tape around the
> outside to cut out stray light)  in my box,  there are loads of LEDS in t=
he
> hackspace one or two Arduino boards if you are free come in and we'll sta=
rt
> building one
>
>  On Thu, Oct 18, 2012 at 1:39 PM, Tommaso Vannocci <ktomt...@gmail.com>wr=
ote:
>
>>  also this kickstarter is not bad:
>>
>>
>> http://www.kickstarter.com/projects/jywarren/public-lab-diy-spectrometry=
-kit
>>
>>
>> On 18 October 2012 13:31, Tommaso Vannocci <ktomt...@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I was thinking that sooner or later we'll need to build a
>>> spectrophotometer (I checked prices on ebay but it's too expensive for =
us,
>>> around =C2=A3300 and don't know actually if they work properly). A
>>> spectrophotometer is used to measure the concentration of products in a
>>> solution (bacteria, DNA, etc) and it is going to be useful, for example=
, to
>>> standardise the quality of our competent cells.
>>>
>>> There are not so many resources for a DIY one but I found some
>>> interesting links (check especially the last one, quite funny):
>>>
>>> http://www.instructables.com/id/A-simple-DIY-spectrophotometer/?ALLSTEP=
S
>>>
>>> http://sci-toys.com/scitoys/scitoys/light/spectrograph/spectrograph.htm=
l
>>>
>>> http://openwetware.org/wiki/Citizen_Science/The_Urinomics_Project
>>>
>>> Tom
>>>
>>
>>
>> _______________________________________________
>> Lhs-biohacking mailing list
>> Lhs-biohack...@lists.kentgeek.org
>> https://lists.kentgeek.org/mailman/listinfo/lhs-biohacking
>>
>>
>

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Actually, the phototransistors I have are, according to their specs, most s=
ensitive in the green part of the spectrum so this might be a problem but w=
e can probably work round this.<br><br>
<div class=3D"gmail_quote">On Thu, Oct 18, 2012 at 4:00 PM, simon rose <spa=
n dir=3D"ltr">&lt;<a href=3D"mailto:excaliburor...@googlemail.com" target=
=3D"_blank">excaliburor...@googlemail.com</a>&gt;</span> wrote:<br>
<blockquote style=3D"BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PA=
DDING-LEFT:1ex" class=3D"gmail_quote">We have some of the parts for some of=
 these=C2=A0 already. I have a couple of phototransistors, (one is already =
connected up and has tape around the outside to cut out stray light)=C2=A0=
=C2=A0in my box, =C2=A0there are loads of LEDS in the hackspace one or two =
Arduino boards if you are free come in and we&#39;ll start building one<br>
<br>
<div class=3D"gmail_quote">
<div>
<div class=3D"h5">On Thu, Oct 18, 2012 at 1:39 PM, Tommaso Vannocci <span d=
ir=3D"ltr">&lt;<a href=3D"mailto:ktomt...@gmail.com" target=3D"_blank">ktom=
t...@gmail.com</a>&gt;</span> wrote:<br></div></div>
<blockquote style=3D"BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PA=
DDING-LEFT:1ex" class=3D"gmail_quote">
<div>
<div class=3D"h5">also this kickstarter is not bad:=20
<div><br></div>
<div><a href=3D"http://www.kickstarter.com/projects/jywarren/public-lab-diy=
-spectrometry-kit" target=3D"_blank">http://www.kickstarter.com/projects/jy=
warren/public-lab-diy-spectrometry-kit</a>=20
<div>
<div><br><br>
<div class=3D"gmail_quote">On 18 October 2012 13:31, Tommaso Vannocci <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:ktomt...@gmail.com" target=3D"_blank">kt=
omt...@gmail.com</a>&gt;</span> wrote:<br>
<blockquote style=3D"BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PA=
DDING-LEFT:1ex" class=3D"gmail_quote">
<div>Hi,</div>
<div><br></div>
<div>I was thinking that sooner or later we&#39;ll need to build a spectrop=
hotometer (I checked prices on ebay but it&#39;s too expensive for us, arou=
nd =C2=A3300 and don&#39;t know actually if they work properly). A spectrop=
hotometer is used to measure the concentration of products in a solution (b=
acteria, DNA, etc) and it is going to be useful, for example, to standardis=
e the quality of our competent cells.</div>

<div><br></div>
<div>There are not so many resources for a DIY one but I found some interes=
ting links (check especially the last one, quite funny):</div>
<div><br></div><a href=3D"http://www.instructables.com/id/A-simple-DIY-spec=
trophotometer/?ALLSTEPS" target=3D"_blank">http://www.instructables.com/id/=
A-simple-DIY-spectrophotometer/?ALLSTEPS</a>=20
<div><br></div>
<div><a href=3D"http://sci-toys.com/scitoys/scitoys/light/spectrograph/spec=
trograph.html" target=3D"_blank">http://sci-toys.com/scitoys/scitoys/light/=
spectrograph/spectrograph.html</a></div>
<div><br></div>
<div><a href=3D"http://openwetware.org/wiki/Citizen_Science/The_Urinomics_P=
roject" target=3D"_blank">http://openwetware.org/wiki/Citizen_Science/The_U=
rinomics_Project</a></div>
<div><br></div>
<div>Tom</div></blockquote></div><br></div></div></div><br></div></div>____=
___________________________________________<br>Lhs-biohacking mailing list<=
br><a href=3D"mailto:Lhs-biohack...@lists.kentgeek.org" target=3D"_blank">L=
hs-biohack...@lists.kentgeek.org</a><br>
<a href=3D"https://lists.kentgeek.org/mailman/listinfo/lhs-biohacking" targ=
et=3D"_blank">https://lists.kentgeek.org/mailman/listinfo/lhs-biohacking</a=
><br><br></blockquote></div><br></blockquote></div><br>

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