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DIY NanoDrop - Hackteria. Attempt to build DIY Microvolume Spectrophotometers or Fluorospectrometers to quantitate micro-volumes of sample. The NanoDrop products are very popular in scientific labs. The measurement principle of holding a drop between two points - the light source and the sensor - allows to measure samples as small as 0.5µL up to 2µL micro volume without a cuvette. The simple basic principle should be perfect for DIY lab equipment. Let's try. First prototype. Possible applications: - Turbidity measurement - Spectral data and purity analysis - Measure nucleic acid, protein and colorimetric assays - Microvolume fluorescence measurements Now the NanoDrop principle seems to be patented (patent US6628382 and US6809826).

LED-Photosensor A flat head LED and a flat head photo diode are put together, a drop of liquid in between - this is it. High performance LEDs can replace expensive light source and filters for excitation. LED-Spectrometer Links. LabPro Forensics Packages. Cell Phone Spectrometer. Cell Phone Spectrophotometer A Guided Inquiry Approach to Teaching How to Think About Analytical Instrumentation Alexander Scheeline and Kathleen Kelley Department of Chemistry University of Illinois at Urbana-Champaign600 S. Mathews Ave.Urbana, IL 61801 USA Cell Phone Spectrophotometer by Alexander Scheeline is licensed under a Creative Commons Attribution 3.0 United States License.Based on a work at beyond the scope of this license may be available at Please read the paper under the Exposition link, then harvest other links as appropriate. DremelFuge - A One-Piece Centrifuge for Rotary Tools by cathalgarvey.

In the spirit of Open Source Hardware, Dremelfuge is now Open Source Hardware, according to the 0.3 standard found here: DremelFuge is a printable rotor for centrifuging standard microcentrifuge tubes and miniprep columns. Compared to the cost of a new centrifuge (priced by a fellow Thingiversian at $500 minimum on Froogle), a Dremelfuge is incredibly cheap. It can be used for DIYbio ( ) or for some culinary uses. It requires industry standard 1.5ml/2ml Eppendorf/Microcentrifuge tubes. * Used with a drill at 3000 RPM, the Dremelfuge will deliver over 400g, enough to comfortably spin down Miniprep samples (proven personally).

To see some picures of Dremelfuge used to spin down cells, see here: P=85 Quick Video Intro to Dremelfuge: A video of me using Dremelfuge practically in a tent, to extract DNA from a banana: Please let me know if Dremelfuge is of use to you! Dremelfuge | Citizen Science Quarterly. Introducing GoGoFuge - FabLab@School.

GoGoFuge Description: The GoGoFuge is a low-cost, open-source microcentrifuge for classrooms and hobbyists. The rotation is driven by a portable Dremel tool controlled by a GoGoBoard and its associated relay and display unit. The 3-D printed spinning bit can spin up to six 1.5 ml Eppendorf tubes at forces up to 10,000 xg. The user can control both the speed of rotation, via a rotary knob, and the spin time, via an intuitive interface on the display.

To see the GoGoBoard's features in action, please see this video: (reload the page if you don't see it) Construction Guide: (Note: All necessary laser cutting files and GogoBoard code are included here.) 1) Cut the wood on 0.2" plywood. 2) Place Dremel (Model #760-04) inside the base. 3) Snap in the GoGoBoard Display unit in the front face, along with the Time buttons, the variable Speed resistor and "Go" button. 4) Insert the female 2.1mm power plug into the back face and secure with wood glue. 5) Snap the remaining wood pieces together nicely. Dremelfuge Classic by onetruecathal on Shapeways. Update: Dremelfuge is now provisionally available in the "Strong and Flexible" material, after some basic testing. No guarantee of safety is given, as always.

The "Strong & Flexible" material Dremelfuge creates more vibration in use, which may indicate less stability than the "Grey Robust" (ABS) material. Caveat Emptor: As always, Dremelfuge is sold as an ornament, and any use as a tool is a risk entirely taken by the purchaser/user. I accept no responsibility for the safety of Dremelfuge. DremelFuge is a centrifuge rotor for use with a rotary tool such as the popular "Dremel". As an Open-Source Hardware, DIYbio-inspired design it is intended to enable and inspire scientists world-wide. At a rotary speed of 33,000rpm (the top speed for a standard Dremel 300), Dremelfuge can deliver up to 52,000g/rcf (1g = the force of Earth's gravity) on a sample in a standard 1.5ml microcentrifuge tube, measured halfway down the tube. CheapStat: An Open-Source, “Do-It-Yourself” Potentiostat for Analytical and Educational Applications.

Although potentiostats are the foundation of modern electrochemical research, they have seen relatively little application in resource poor settings, such as undergraduate laboratory courses and the developing world. One reason for the low penetration of potentiostats is their cost, as even the least expensive commercially available laboratory potentiostats sell for more than one thousand dollars. An inexpensive electrochemical workstation could thus prove useful in educational labs, and increase access to electrochemistry-based analytical techniques for food, drug and environmental monitoring. With these motivations in mind, we describe here the CheapStat, an inexpensive (<$80), open-source (software and hardware), hand-held potentiostat that can be constructed by anyone who is proficient at assembling circuits. This device supports a number of potential waveforms necessary to perform cyclic, square wave, linear sweep and anodic stripping voltammetry. Figures Introduction Figure 1.

Fournisseur low cost de matériel laboratoire. Science experiments. Sciences. Diffraction Grating Slides - Linear 1000 line/mm.