Supply Maxwell turbidity tube

McFarland turbidity tube [product name] generic name: McFarland turbidity tube English name: McFarland Standard Product Specification 5 / box intended use of a different set of standards] McFarland turbidity tube, used to evaluate the bacteria concentration solution. For the standardization of microbiological methods is very necessary. Judged on the basis of the original broth turbidity Maxwell turbidity tube label TEST PRINCIPLE bacterial concentration is known by the same bacterial suspension turbidity ampoule diameter compare to get. [6] The main components of McFarland standard 17.5mm diameter pipe (0.5,1,2,3,4,5) standard components BaSO4 BaSO4 0.5 No. standard pipe 2.40 10-5 mol / l standard pipe 1.44 10- 3 4mol / l on the 1st standard pipe 4.80 10-5 mol / l standard pipe 4 1.92 10-4mol / l 2 standard tube 9.60 10-5 mol / l on the 5th standard pipe 2.40 10-4mol / l [Storage conditions and period ● Use ampoules must at 2-30 ℃ dark preservation, valid for six months ● Do not open the McFarland standard ampoule: standard suspension is really original, using a sealed ampoule [Testing Method] ● Remove selected turbidity tube ● with the same diameter of the ampoule was prepared bacterial suspension, and mix. ● standard turbidity tube and mix well. ● Now compare the two nephelometric turbidity tube in the black background. ● If necessary, adjust the broth turbidity, mix than the standard tube again after turbidity turbidity. Interpretation of test results [] equivalent standard turbidity tube bacterial concentration (1) × 106 / ml 650nm theoretical optical density (2) 150 0.5 0.125 1300 0.25 2600 0.50 3900 0.75 41 200 1.00 51 500 1.25 1 bacterial concentration depending on the size of microorganisms. Effective amount represents the average RMS bacteria. For high molecular weight yeast, divided by the number of bacteria is approximately 30. 2. turbidity tube numerical equivalent of the optical density of bacteria. Because different different, light diffraction particle size of bacteria and, therefore BaSO4 not have the same optical density. [Limitations] test methods do not use these ampoules pipe detection DENSIMAT [Note] ● only for in vitro diagnostic use only for professionals ● ● Before use, check the ampoule is complete ● All samples and microbial cultures latently infected must purified by trained or experienced professionals to take appropriate measures to deal with, sterile processing procedures and common bacterial precautions must run through the entire process. See "NCCLS M29-A, laboratory staff for instrument biological disasters and blood, body fluids and tissues protection rafters pen infectious diseases; the rules have been approved in December - 1997" for further information regarding the amount of processing preventive measures Refer to "Microbiological and Biomedical Laboratories biosafety, HHS publication. (CDC) 93-8395, III (May 1993)," or the current rules for each of the relevant countries.