Reddit reviews Bel-Art Spinbar Teflon Octagon Magnetic Stirring Bar; 25.4 x 9.5mm, White (F37110-0138)

It sure is. I have three stir bar types; two 1" and one 2". Funny thing is one of the short ones works and the other doesn't. The one with the band in the middle is the one you want BTW.

This was from DL:

You guys convinced me to home brew. Especially after I just did some math on what my latest $2k purchase would get me.

Putting together the list, will be refining as I learn more.

• [Autoclave](http://www.amazon.com/Prestige-Classic-Electric-Autoclave- Sterilizer/dp/B002AR0NUI/ref=pd_sim_sbs_hpc_2?ie=UTF8&refRID=0E5AJ7PQ2CHM1083QMPT) -- $899
  
• 2 x Autoclave Gasket -- $120
  
• Hormone powder
  
• Filtered Cottonseed USP Oil 4 Liter -- $255
  
• Benzyl Benzoate USP 1 Liter -- $60.75
  
• Benzyl Alcohol USP 1 Liter -- $45
  
• 3ml TERUMO Luer Lock Syringe w/o Needle (Qty. 50) -- $8
  
• 1 x 10ml EXEL Luer Lock Syringe w/o Needle (Qty. 50) -- $15.25
  
• 5 x B-D 25g x 1.5' (Qty. 10) -- $11
  
• 5 x B-D Needles 18g 1.5 (Qty 10) -- $11
  
• Alcohol prep pads/wipes
  
• Accurate scale to hundredths place
  
• Calibration weight
  
• 2 x Corning Pyrex 3 Piece Glass Graduated Low Form Griffin Beaker Set, 50ml, 100ml, 250ml -- $29.90
  
• 4 x PYREX Griffin Low Form 400mL Beaker Graduated Ea -- $34
  
• 4 x Beaker - PYREX GLASS 10ml -- $22.72
  
• 2 x SEOH Class A Volumetric Flask Borosilicate Glass 250ML -- $29.90
  
• 2 x Beaker Filters -- 150ml Nalgene MF75 Bottle Top Filter - 33mm neck (Qty. 12) -- $145
  
• Vacuum Pump -- 1.5 CFM Portable -- $275
  
• Melting Point Checker
  
• Sterile .20um syringe filter (For Tren) -- $162.88
  
• Crimper
  
• Vials
  
• Caps
  
• Glass stir rod
  
• Agar plates
  
• Latex gloves
  
• Alconox Detergent Cleaning Concentrate 4 lb. Container -- $30.30
  
• Scilogex 86143101 Model MS-H280-Pro BlueSpin LED Circular-Top Digital Magnetic Hotplate Stirrer with Ceramic Coated Plate, 100/240V -- $200
  
• 2 x Bel-Art Scienceware 371100138 PTFE Octagon Spinbar Magnetic Stirrer Bar, with Integral Pivot Ring, White, 1" Length, 3/8" Diameter -- $13
  
• 3 x jugs isopropyl alcohol
  
• Propolyene Gylcol 300
  
• Lockable Medical Storage Box -- $44.50
  
• Horizontal Laminar Flow Hood 48" x 24" -- $1,900
  
  
  Which Bottle Top Filter?
  ---------------------------------
  
• Millipore Hydrophilic PVDF Stericup-GV Bottletop Filter Unit, Radio-Sterilized, 0.22µm Pore Size -- $225
  
  Or
  
  
• 2 x Beaker Filters -- 150ml Nalgene MF75 Bottle Top Filter - 33mm neck (Qty. 12) -- $145
  
  
  Which Pipettor?
  ---------------------------------
  
• VWR Ergonomic High-Performance Pipettor -- $267.02
  
  or
  
  
• BRAND seripettor* pro Bottletop Dispenser - 1-10 mL -- #296.30
  
  Money is not an object. I'm not the type to do things cheaply or in a half-assed way. Lets set up the dream home brew lab now. I'll post pictures.
  
  What to buy?
  
  

Sure. As has been typical for everything I've built for brewing, I went through several iterations starting with an idea very cool and complex, but ending with something super simple. In the end all I have is a 9V charger with the end cut off and connected to a pc fan, with magnets glued on it, inside a cigar box. The combination of voltage and fan speed works out just right. I tried setting up a pulse width modulation circuit, then just a potentiometer and none of it worked as well as the final simple setup. Which is quite embarrassing with my EE degree.

Anyway, I do have a few pieces of advice. Glue the magnets onto a washer or piece of something first, spaced out to match your stir bar, then glue that whole thing to the top of the fan. Otherwise, the magnets want to move on the fan and are hard to glue down. Get more magnets than you think you'll need. I used this stirbar and these magnets. I bought the cigar box from a cigar store for $2. Everything else I had sitting around.


Search DIY stir plate on google and you can find tons of how-to's.

amazon