NELSON 美国尼尔森实验室
是国际一流的医学和空气流体实验室，是FDA, NIOSH, CDC 等官方机构认可实验室, 有GLP资质
新型冠状病毒肺炎（Corona Virus Disease 2019，COVID-19）指定检测机构
Test service 测试服务：
NRC110
NIOSH Respirator Certification: Sodium Chloride (NaCl)
42 CFR 84
Standard Turnaround Time: 14 days Sample Amount: 20 masks
NIOSH Respirator Certification: Sodium Chloride (NaCl)
For filtration efficiency, twenty respirators are conditioned for 25 hours at 85% RH and C. After conditioning, filters are put into a test system that passes a neutralized NaCl aerosol through the sample at 85 L/min. This aerosol has a particle size distribution with a count median diameter of 0.0750.020m, a mass median diameter of 0.26m, and a geometric standard deviation not exceeding 1.86m. Masks are loaded with the NaCl until maximum penetration or until filter exceeds the designated particle limit. The maximum filter penetration that can occur to maintain a N95 rating is 5%95% efficiency). For a N99 rating maximum filter penetration is 1%99% efficiency).
NRC120
NIOSH Respirator Certification: Inhalation and Exhalation
42 CFR 84
Standard Turnaround Time: 10 days Sample Amount: 3 masks
NIOSH Respirator Certification: Inhalation and Exhalation
For airflow resistance two tests are performed: exhalation resistance and inhalation resistance. We determine the initial breathability of three masks, in both directions of exhalation and inhalation (42 CFR Part 84.180). Measurements are made with a 6 inch slant manometer. Initial Inhalation resistance cannot exceed 35 mm water and initial exhalation resistance cannot exceed 25 mm water.
NRC125
NIOSH Respirator Certification: Valve Leak Test
42 CFR 84
Standard Turnaround Time: 14 days Sample Amount: 3 masks
NIOSH Respirator Certification: Valve Leak Test
For exhalation valve leak, three valves are removed from respirators and the leakage across the valve determined according to 42 CFR Part 84.182. Measurements are made with a digital soap film flowmeter and leakage cannot exceed 30 mL/min. Valve leakage is only necessary if the product contains an exhalation valve.
BFE110
Bacterial Filtration Efficiency (BFE) w/ Diff. Pressure
ASTM F 2100 and EN 14683
Standard Turnaround Time: 12 days
Sample Amount: separate samples for BFE and Delta P required, AQL 4% sampling plan required for ASTM F2100, minimum 5 samples up to AQL 4% required for EN 14683; each sample must be 4 x 4 inches minimum or full face mask
Bacterial Filtration Efficiency (BFE) w/ Diff. Pressure
These tests comply with ASTM F2100 (ASTM F2101 and Mil-M-36954C) and EN14683. A flow rate of 28.3 L/min is required for BFE testing. Other flow rates will require a modified method. Results are reported up to 99.9%. The differential pressure test evaluates the breathability of masks or airflow resistance of other products at a flow rate of 8 L/min. The ASTM F2100 standard states the sampling size should be an AQL of 4%; the client is responsible for determining the appropriate sample size based on AQL. The test is normally performed on face masks and flat sheet materials.
SBP210
Synthetic Blood Penetration for Face Masks (sets of 32), per set
ASTM F 2100
Price is for the testing of 32 samples, one pressure
Standard Turnaround Time: 10 days
Sample Amount: 32 masks are required for each pressure, 1 extra for setup; specify pressure when submitting samples (80, 120 or 160 mmHg)
SBP210
Synthetic Blood Penetration for Face Masks (sets of 32), per set
EN 14683
Price is for the testing of 32 samples, one pressure
Standard Turnaround Time: 10 days
Sample Amount: 32 masks are required for each pressure, 1 extra for setup; specify pressure when submitting samples (80, 120 or 160 mmHg)
Synthetic Blood Penetration for Face Masks (sets of 32), per set
This test complies with ASTM F1862 and EN14683 (ISO 22609). (Horizontal projection of fixed volume at a known velocity) The test can be conducted at pressures of 80, 120, or 160mmHg. The ASTM F1862 method is preferred to AATCC 22 as it is a more severe challenge and relies less on technician bias for test results and rating. ASTM F1862 meets the requirements of ASTM F2100. For general use masks generally 80 or 120 mmHg should be tested. Surgical masks should be tested at 120mmHg or 160mmHg. If you test at a higher level and fail, you should retest at the next level down (e.g. if you fail 120mmHg, retest at 80mmHg). A separate set of 33 masks is required for each pressure tested. Please note that 32 of the masks will be used for testing. The 1 extra mask will be used to verify that a droplet of blood placed on the inside of the mask can be visually seen by the analyst, ensuring that a droplet penetrating the material will be seen, per ASTM F1862, 12.1. Please specify on the sample submission form what pressure you would like us to test.
MCM100
Microbial Cleanliness for Face Masks, EN 14683 (one mask type, set of 5)
EN 14683
Standard Turnaround Time: 18 days
Sample Amount: Test is per mask type or configuration, set of 5 samples required
PFE115
Particle Filtration Efficiency: Latex Particle Challenge
ASTM F 2100
Standard Turnaround Time: 12 days
Sample Amount: AQL 4% sampling plan required for ASTM F2100, each sample must be 5 x 5 inches (12 x 12 cm) minimum or full face mask; specify particle size when submitting samples (0.1 for ASTM F2100, 0.3, 0.5 or 1.0 micron)
Particle Filtration Efficiency: Latex Particle Challenge
The procedure employs the basic test method described in ASTM F2299 (formerly ASTM F1215), but incorporates a non- neutralized challenge. The test can be performed with the following submicron particle sizes: 1.0m, 0.5m, 0.3m, 0.1m. Please specify on the sample submission form which particle size.
FTS101
Flammability Test, 16 CFR part 1610
Up to 10 replicates may be required for this test. Per sample set (14 samples required). Complete samples (masks, gowns, materials; samples will be cut once they arrive at NLI)
