Lab Scale Fermentor: Difference between revisions

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== Prototype Development ==
== Prototype Development ==


I have acquired some components and will report on construction progress of a low-cost "lab scale" (~1 liter) microbe fermentor.
I have acquired some components and will report on construction progress of a low-cost "lab scale" (~1 liter) microbe fermentor. [[User:ChuckH|ChuckH]] ([[User talk:ChuckH|talk]]) 04:48, 29 August 2013 (CEST)


Our basic chamber is a small consumer slow cooker ("crock pot"). This unit from Proctor Silex has a glass lid with a soft rubber lip seal.
Our basic chamber is a small consumer slow cooker ("crock pot"). This unit ([http://www.proctorsilex.com/products/slow-cookers-15-quart-slow-cooker-model-33116y.php Proctor Silex 33116Y]) has a glass lid with a soft rubber lip seal and costs about $15.


The lid is made of glass. It appears ''not'' to be tempered, as the handle is attached by a screw through a drilled hole. This is good, because it means we can drill our own holes for stirring, sensors, and fluid lines.
[[File:slowcooker_1.jpg|border|240px]] [[File:slowcooker_lidgasket.jpg|border|200px]]
 
The lid is made of glass. It appears ''not'' to be tempered, as the handle is attached by a screw through a drilled hole. This is good, because it means we can drill our own holes for stirring, sensors, and fluid lines. I will try using some cheap diamond core drills.
 
[[File:slowcooker_lid_holes.jpg|border|300px]]


The heating jacket is a light-gauge aluminum bowl with a band heater around it. The heater has two elements, measuring 477 ohms and 200 ohms. The front-panel switch selects element 1, element 2, or both in parallel, providing 28W, 66W, and 94W respectively at 115V input. There is no thermostat.
The heating jacket is a light-gauge aluminum bowl with a band heater around it. The heater has two elements, measuring 477 ohms and 200 ohms. The front-panel switch selects element 1, element 2, or both in parallel, providing 28W, 66W, and 94W respectively at 115V input. There is no thermostat.
[[File:slowcooker_internal2.jpg|border|300px]] [[File:slowcooker_internal_1.jpg|border|300px]]

Revision as of 02:48, 29 August 2013

PageOutline

Lab Scale Fermentor

Prototype Development

I have acquired some components and will report on construction progress of a low-cost "lab scale" (~1 liter) microbe fermentor. ChuckH (talk) 04:48, 29 August 2013 (CEST)

Our basic chamber is a small consumer slow cooker ("crock pot"). This unit (Proctor Silex 33116Y) has a glass lid with a soft rubber lip seal and costs about $15.

Slowcooker 1.jpg Slowcooker lidgasket.jpg

The lid is made of glass. It appears not to be tempered, as the handle is attached by a screw through a drilled hole. This is good, because it means we can drill our own holes for stirring, sensors, and fluid lines. I will try using some cheap diamond core drills.

Slowcooker lid holes.jpg

The heating jacket is a light-gauge aluminum bowl with a band heater around it. The heater has two elements, measuring 477 ohms and 200 ohms. The front-panel switch selects element 1, element 2, or both in parallel, providing 28W, 66W, and 94W respectively at 115V input. There is no thermostat.

Slowcooker internal2.jpg Slowcooker internal 1.jpg