QuiKResponse - Perchlorate Item no. ERA-1501QR Unit 15 mL Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Oxygen, dissolved in water Item no. ERA-213 Unit 500 mL Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Glycols in Water Item no. ERA-271 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 372 (January 20, 2026 - March 6, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 381 (October 16, 2026 - November 30, 2026) Add to cart All product details
Certified Reference Material - Demand QC plus QC Standard Item no. ERA-4013 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - 1,4-Dioxane Item no. ERA-402 Unit 2 mL (ampoule) Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Solids, Concentrate, waste water (WasteWatR TM) Item no. ERA-4032 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Oil & Grease Concentrate, waste water (WasteWatR TM) Item no. ERA-4122 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Uranium, PT Item no. ERA-4400 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 372 (January 20, 2026 - March 6, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 381 (October 16, 2026 - November 30, 2026) Add to cart All product details
Proficiency Testing - Nitrogen Pesticides, priority pollutant Item no. ERA-487 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 372 (January 20, 2026 - March 6, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 381 (October 16, 2026 - November 30, 2026) Add to cart All product details
Certified Reference Material - PAH-GC & GCMS Item no. ERA-4882 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - PAH-GC & GCMS Item no. ERA-4882QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Lithium Item no. ERA-4992QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Solids, waste water (WasteWatR TM) Item no. ERA-499QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Cyanide, waste water (WasteWatR TM) Item no. ERA-502 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Simple Nutrients, waste water (WasteWatR TM) Item no. ERA-505 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Simple Nutrients, waste water (WasteWatR TM) Item no. ERA-505QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Hardness, waste water (WasteWatR TM) Item no. ERA-507 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Hardness, waste water Item no. ERA-580 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 371 (December 8, 2025 - January 22, 2026)WP 372 (January 20, 2026 - March 6, 2026)WP 373 (February 16, 2026 - April 2, 2026)WP 374 (March 16, 2026 - April 30, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 376 (May 18, 2026 - July 2, 2026)WP 377 (June 15, 2026 - July 30, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 379 (August 17, 2026 - October 1, 2026)WP 380 (September 14, 2026 - October 29, 2026)WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027) Add to cart All product details
Proficiency Testing - Oil & Grease, waste water Item no. ERA-582 Unit 1 L Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 371 (December 8, 2025 - January 22, 2026)WP 372 (January 20, 2026 - March 6, 2026)WP 373 (February 16, 2026 - April 2, 2026)WP 374 (March 16, 2026 - April 30, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 376 (May 18, 2026 - July 2, 2026)WP 377 (June 15, 2026 - July 30, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 379 (August 17, 2026 - October 1, 2026)WP 380 (September 14, 2026 - October 29, 2026)WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027) Add to cart All product details
Proficiency Testing - Simple Nutrients, waste water Item no. ERA-584 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 371 (December 8, 2025 - January 22, 2026)WP 372 (January 20, 2026 - March 6, 2026)WP 373 (February 16, 2026 - April 2, 2026)WP 374 (March 16, 2026 - April 30, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 376 (May 18, 2026 - July 2, 2026)WP 377 (June 15, 2026 - July 30, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 379 (August 17, 2026 - October 1, 2026)WP 380 (September 14, 2026 - October 29, 2026)WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027) Add to cart All product details
Proficiency Testing - Total Residual Chlorine, waste water Item no. ERA-587 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 371 (December 8, 2025 - January 22, 2026)WP 372 (January 20, 2026 - March 6, 2026)WP 373 (February 16, 2026 - April 2, 2026)WP 374 (March 16, 2026 - April 30, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 376 (May 18, 2026 - July 2, 2026)WP 377 (June 15, 2026 - July 30, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 379 (August 17, 2026 - October 1, 2026)WP 380 (September 14, 2026 - October 29, 2026)WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027) Add to cart All product details
Proficiency Testing - Total Phenolics (4-AAP), waste water Item no. ERA-589 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 371 (December 8, 2025 - January 22, 2026)WP 372 (January 20, 2026 - March 6, 2026)WP 373 (February 16, 2026 - April 2, 2026)WP 374 (March 16, 2026 - April 30, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 376 (May 18, 2026 - July 2, 2026)WP 377 (June 15, 2026 - July 30, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 379 (August 17, 2026 - October 1, 2026)WP 380 (September 14, 2026 - October 29, 2026)WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027) Add to cart All product details
Proficiency Testing - PFAS - Non-Potable Water Item no. ERA-599 Unit 2 mL (ampoule) Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 372 (January 20, 2026 - March 6, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 381 (October 16, 2026 - November 30, 2026) Add to cart All product details
Certified Reference Material - Total Petroleum Hydrocarbons (TPH) in Water #1 Item no. ERA-600 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Total Petroleum Hydrocarbons (TPH) in Water #2 Item no. ERA-601 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - TPH in Water, QuiK Item no. ERA-602QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Gasoline Range Organics (GRO) in Water Item no. ERA-640 Unit 2 mL Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 372 (January 20, 2026 - March 6, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 381 (October 16, 2026 - November 30, 2026) Add to cart All product details
Proficiency Testing - Diesel Range Organics (DRO) in Water Item no. ERA-641 Unit 2 mL Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 372 (January 20, 2026 - March 6, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 381 (October 16, 2026 - November 30, 2026) Add to cart All product details
Proficiency Testing - Total Petroleum Hydrocarbons (TPH) in Water Item no. ERA-642 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 372 (January 20, 2026 - March 6, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 381 (October 16, 2026 - November 30, 2026) Add to cart All product details
Certified Reference Material - Organophosphorus Pesticides (OPP), priority pollutant (PrPollutnT TM) Item no. ERA-665 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Low-Level Nitroaromatics & Nitramines, priority pollutant (PrPollutnT TM) Item no. ERA-677 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - EDB/DBCP/TCP Item no. ERA-692QR Unit 2 mL (ampoule) Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Volatiles, priority pollutant (PriorityPollutnT TM) Item no. ERA-710 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - PCBs in Oil, priority pollutant (PriorityPollutnT TM) (1) Item no. ERA-729SQR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - PCBs in Water, priority pollutant (PriorityPollutnT TM) (1) Item no. ERA-734S Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - PCBs in Water, priority pollutant (PriorityPollutnT TM) (1) Item no. ERA-734SQR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Nitrite, waste water (WasteWatR TM) Item no. ERA-770 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Surfactants-MBAS, waste water (WasteWatR TM) Item no. ERA-776 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Turbidity, waste water (WasteWatR TM) Item no. ERA-777 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Chlordane, priority pollutant Item no. ERA-837 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 371 (December 8, 2025 - January 22, 2026)WP 372 (January 20, 2026 - March 6, 2026)WP 373 (February 16, 2026 - April 2, 2026)WP 374 (March 16, 2026 - April 30, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 376 (May 18, 2026 - July 2, 2026)WP 377 (June 15, 2026 - July 30, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 379 (August 17, 2026 - October 1, 2026)WP 380 (September 14, 2026 - October 29, 2026)WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027) Add to cart All product details
Certified Reference Material - PCBs in Water - 1016 Item no. ERA-860 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - PCBS in Water - 1221 Item no. ERA-861 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - PCBs in Water - 1232 Item no. ERA-862 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - PCBs in Water - 1248 Item no. ERA-864 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - PCBs in Water - 1254 Item no. ERA-865 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - PCBs in Water - 1260 Item no. ERA-866 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Volatile Solids, waste water (WasteWatR TM) Item no. ERA-913 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Acidity, waste water Item no. ERA-915 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Low-Level Total Residual Chlorine Item no. ERA-917 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Boron, waste water (WasteWatR TM) Item no. ERA-919 Unit each Analytes Select to compare Price on request - + Add to cart All product details