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![Richflood Universal logo .png](https://static.wixstatic.com/media/d5d54f_01291efb12a643f597f69b2991092846~mv2.png/v1/fill/w_297,h_64,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/Richflood%20Universal%20logo%20.png)
![Laboratory](https://static.wixstatic.com/media/11062b_40d721201da34429b78d1ffe5ba9e748~mv2.jpg/v1/crop/x_0,y_525,w_5000,h_1764/fill/w_981,h_346,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/Laboratory.jpg)
Visible & Ultraviolet / Visible Spectroscopy EPA Methods
![Laboratory Scientist](https://static.wixstatic.com/media/11062b_76c0ea20f8624289a785e1a971cd205f~mv2.jpeg/v1/fill/w_395,h_264,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/Laboratory%20Scientist.jpeg)
Atomic Absorption Spectrocopy EPA Methods
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EPA - 218_4 - Chromium, Hexavalent Atomic absorption, Chelation Extraction.pdf
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EPA - method - 206_3 - Arsenic Atomic absorption A - Gaseous-Hydride.pdf
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EPA Method - 420_2 - phenolic materials in water and waste by colrimeter.pdf
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EPA Method - 200_13 - Trace element determination via Graphite furnace.pdf
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EPA Method - 200_9 - DETERMINATION OF TRACE ELEMENTS BY STABILIZED TEMPERATURE.pdf
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EPA Method - 200__9 - TRACE ELEMENTS IN WATER, SOLIDS, AND BIOSOLIDS BY.pdf
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EPA Method - 202_1 Aluminum - Atomic Absorption, Direct Aspiration.pdf
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EPA Method - 202_2 - Aluminum - Atomic Absorption-Graphite Furnace.pdf
![Researcher](https://static.wixstatic.com/media/11062b_80e8f53d436f4d2289f16711cde7db9d~mv2.jpeg/v1/crop/x_5,y_721,w_4491,h_1660/fill/w_148,h_55,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/Researcher.jpeg)
Atomic Absorption Spectrocopy EPA Methods
![Microscope](https://static.wixstatic.com/media/11062b_7c98d1fba4c5448aaa39dc46cf003b2a~mv2.jpg/v1/fill/w_146,h_97,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/Microscope.jpg)
Atomic Absorption Spectrocopy EPA Methods
![Samples](https://static.wixstatic.com/media/11062b_72f1008787e946fb881c13d7473392a6~mv2.jpg/v1/fill/w_114,h_76,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/Samples.jpg)
![Science Lab](https://static.wixstatic.com/media/11062b_d57e5e97bf6543b491330d08b607ff6e~mv2.jpg/v1/crop/x_0,y_434,w_5760,h_2577/fill/w_147,h_66,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/Science%20Lab.jpg)
Gas Chromatography EPA Methods
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EPA Method - 502_2 - VOC by Purge and trap GC with PID and ECD.pdf
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EPA Method - 502_2re - VOC in water via Purge and trap GC with PID and ECD.pdf
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EPA Method - 506 - PHTHALATE AND ADIPATE ESTERS by PID GC.pdf
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EPA Method - 506rev1 - PHTHALATE AND ADIPATE ESTERS IN DRINKING WATER by PID GC.pdf
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EPA Method - 508_11 - PESTICIDES - HERBICIDES - ECD - GC.pdf
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EPA Method - 508_1re2 - PESTICIDES - HERBICIDES - ECD - GC.pdf
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EPA Method - 508_a - POLYCHLORINATED BIPHENYLS BY ECD GC.pdf
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EPA Method - 508rev31 - CHLORINATED PESTICIDES by ECD GC.pdf
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EPA Method - 515_3 - CHLORINATED ACIDS in drinking water by ECD GC.pdf
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EPA Method - 548 - Endothall in Drinking water by ECD GC.pdf
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EPA Method - 551 - CHLORINATION DISINFECTION BYPRODUCTS by ECD GC.pdf
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EPA Method - 551_1 - CHLORINATION DISINFECTION BYPRODUCTS by ECD GC.pdf
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EPA Method - 552 - HALOACETIC ACIDS IN DRINKING WATER by ECD GC.pdf
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EPA Method - 552_1 - HALOACETIC ACIDS AND DALAPON by ECD GC.pdf
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EPA Method - 552_2 - HALOACETIC ACIDS AND DALAPON by ECD GC.pdf
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EPA Method - 554 - CARBONYL COMPOUNDS IN DRINKING WATER by Gradient HPLC.pdf
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EPA Method - 602 - PURGEABLE AROMATICS in water by Purge and trap ECD GC.pdf
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EPA Method - 603 - ACROLEIN AND ACRYLONITRILE by Purge and trap FID GC.pdf
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EPA Method - 608_1 - Organochlorine Pesticides by ECD GC.pdf
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EPA Method - 608_2 - Organochlorine in waste water by ECD GC.pdf
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EPA Method - 609 - NITROAROMATICS AND ISOPHORONE by ECD FID GC.pdf
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EPA Method - 610 - POLYNUCLEAR AROMATIC HYDROCARBONS by GC and HPLC.pdf
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EPA Method - 614_1 - Organophosphorus Pesticides by ECD GC.pdf
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EPA Method - 616 - Carbon-, Hydrogen in pesticides by FID GC.pdf
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EPA Method - 617 - Organohalide Pesticides and PCB by ECD GC.pdf
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EPA Method - 622 - Organophosphorus Pesticides by NPD GC.pdf