What is the best McFarland standard machine?

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Muhanna Mohammed Alshaibani

The best and cheapest way to do McFarland standard is using the spectrophotometer. at different wave length depends on your microorganism( Fungal, yeast, Bacteria).

Jayedul Hassan

Is it necessary to have a machine for MacFarland Standard? If your desire is to compare the standard you can easily prepare this. It can also be stored for long time. In my lab we use to prepare the standard ourselves. You can just go through the links-

http://www.google.co.jp/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCgQFjAB&url=http%3A%2F%2Fresources.psmile.org%2Fresources%2Fprocess-control%2Fsection-specific-information%2Fmicrobiology%2Fbacteriology%2FPro6.7-A-13%2520Preparation%2520of%2520McFarland%2520Standards.doc&ei=3T1sVNbrDIqyogTEs4HoCg&usg=AFQjCNGDz0F89jBqRT-K3c8bOjKFrD0ahQ&bvm=bv.80120444,d.cGU

or have a look on the attached file.

Best wishes...