DRAFT DOCUMENT FOR REVIEWPHEREC Technical Memorandum # 2
According to the LABEL:
1 gallon of KONTROL 30-30® contains 2.5 lbs of permethrin
1 gallon = 3.785 liters
1 pound (lb.) = 453.6 grams
2.5 lbs X 453.6 g/lb = 1,134 grams a.i./gal.
1,134/3.785 = 299 grams/liter
1 liter of KONTROL 30-30 contains 299 grams of permethrin.
1 milliliter of KONTROL 30-30 contains 0.299 grams of permethrin.
1 milliliter of KONTROL 30-30 contains 299 milligrams of permethrin.
TAKE one (1) milliliter of KONTROL 30-30 CONCENTRATE and, using a volumetric flask, dilute it to 100 ml FINAL VOLUME with A.C.S. acetone. [A.C.S. acetone is the grade of acetone approved by the American Chemical Society.] This is the STOCK solution.
The STOCK solution contains 2.99 milligrams/ml
TAKE 1.44 ml of the STOCK solution and dilute it to 100 ml FINAL VOLUME with A.C.S. acetone. This is the TEST solution.
2.99 milligrams/ml X 1.44ml= 4.3 milligrams of permethrin
4.3/100 = 0.043 milligrams/ml
This is the same thing as 43 micrograms/ml
The TEST solution contains 0.043 milligrams/ml permethrin
The TEST solution contains 43 micrograms/ml permethrin
USE 1 ml of the TEST solution in each bottle of the Bioassay.
For more information, CONTACT Dr. Jack Petersen
at (850) 872-4184 extension 36 or email firstname.lastname@example.org
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