Summary:
\nThis Mask Bacterial Filtration Efficiency Tester is used to test the percentage of respirator material to remove bacteria-containing suspended particles at a specified flow rate. The method of double air sampling is adopted to improve the accuracy of sampling, which is suitable for the performance test of bacterial filtration efficiency of surgical masks by metrological verification departments, scientific research institutes, medical mask manufacturers and other relevant.
\nFace Masks bacterial filtration efficiency BFE tester is to determine the bacterial filtration efficiency (BFE) of medical face mask materials by employing a ratio of the upstream bacterial challenge to downstream residual concentration of the tested medical face mask materials. The tester provides certain flow rate of bacterial aerosol. The operator can measure the number of colony forming units passing through the medical face mask material, which is clamped between a six-stage Anderson cascade impactor and an aerosol chamber, expressed as a percentage of the number of colony forming units present in the challenge aerosol.
\nStandards:
\nYY \/ T 0469-2011: Medical surgical mask 5.6.2 Particle filtration efficiency.
\nYYT0969-201: Single-use Medical Face Mask
\nEN 14683: Medical Face Mask \u2013 Requirements and Test methods
\nASTM F 2100: Standard Specification for Performance of Materials Used in Medical Face Masks
\nASTM F 2101: Standard Test Method for Evaluating the Bacterial Filtration Efficiency (BFE) of Medical Face Mask Materials, Using a Biological Aerosol of Staphylococcus aureus
\nCNS 14775: Method of test for evaluating the bacterial filtration efficiency (BFE) of medical face mask materials, using a biological aerosol of staphylococcus aureus.
\nFeatures:
\n* Professional negative pressure bio-safety cabinet technology to ensure the safety of operators and the surroundings;
\n* High negative pressure working chamber, two-stage high efficiency filter, 100% safe discharge;
\n* Two \u2013 way, six-stage Anderson accurate sampling is adapted.
\n* Built-in peristaltic pump and the volume is adjustable.
\n* Special microorganism aerosol generator with adjustable bacteria flow and good performance of atomization.
\n* Separated and color touch screen control, easier to operate.
\n* USB interface, can reserve your test data in different forms.
\n* Equipped leakage protection and operating window provide better operating view and safety operating
\nconditions.
\n* Stainless steel chamber with insulation and fire retardant lining is stable and reliable.
\nMain Parameters:
\nItem
\nParameter Range
\nResolution
\nMax Permissible Errors
\nSampling flow rate of Path A
\n28.3L\/min
\n0.1L\/min
\n\u00b12.5%
\nSampling flow rate of Path B
\n28.3L\/min
\n0.1L\/min
\n\u00b12.5%
\nNebulization flow rate
\n(8~10)L\/min
\n0.1L\/min
\n\u00b15.0%
\nPeristaltic pump flow rate
\n0.006~3mL\/min
\n0.001mL\/min
\n\u00b12.5%
\nFlow meter fore pressure of path A
\n-20~0kPa
\n0.01kPa
\n\u00b12.5%
\nFlow meter fore pressure of path B
\n-20~0kPa
\n0.01kPa
\n\u00b12.5%
\nNebulization flow meter fore pressure
\n0~300kPa
\n0.1kPa
\n\u00b12.5%
\nNegative pressure of aerosol chamber
\n-90~-120Pa
\n0.1Pa
\n\u00b12.0%
\nNegative pressure of cabinet body
\n(-50~-200)Pa
\nData Storage
\n>100000 Groups
\nFeature of HEPA filter
\nThe filtration efficiency of particles above 0.3um is \u226599.99%
\nMass mean diameter of aerosol generator
\nMean particle size (MPS) (3.0\u00b10.3)\u03bcm, geometric std. deviation\u22641.5
\nAndersen
\nI>7\u03bcm, II. 4.7-7\u03bcm, III. 3.3-4.7\u03bcm, IV. 2.1-3.3\u03bcm, V. 1.1-2.1\u03bcm
\nVI. 0.6-1.1\u03bcm
\nSize of aerosol chamber
\n600mm(Length)\u00d785mm(Diameter)\u00d73mm(Thickness)
\nTotal particle number of positive control sampler
\n2200\u00b1500cfu
\nVentilation flow of negative pressure cabinet
\n\u22655m3\/min
\nNegative pressure cabinet door size
\n1000mm\u00d7730mm (L\u00d7W)
\nDimension of main machine
\n1180mm\u00d7650mm\u00d71300mm (L\u00d7W\u00d7H)
\nDimension of stand
\n1180mm\u00d7650mm\u00d7600mm (L\u00d7W\u00d7H), height adjustable within 100mm
\nPower supply
\nAC220V\u00b110%,50Hz
\nNoise
\n<65dB(A)\nWeight\nApprox. 180kg\nPower\n<1500W\n<\/p>\n","protected":false},"excerpt":{"rendered":"
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