QuiKResponse - Sulfide, waste water (WasteWatR TM) Item no. ERA-071QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Color, Water Pollution Item no. ERA-1070C Unit 30 mL Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Color, Water Pollution Item no. ERA-1070CQR Unit 30 mL Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Tin & Titanium, waste water (WasteWatR TM) Item no. ERA-517QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - 1 liter Oil & Grease, waste water (WasteWatR TM) Item no. ERA-518QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - HEM / SGT-HEM, waste water (WasteWatR TM) Item no. ERA-519QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Complex Nutrients, waste water (WasteWatR TM) Item no. ERA-525QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Hardness PT (Extra Volume) Item no. ERA-527 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Sulfite Item no. ERA-534QR Unit 10 mL Analytes Select to compare Price on request - + Add to cart All product details
Total Phenolics (4-AAP), WS QR Item no. ERA-535QR Unit 2 mL Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Tin & Titanium, waste water Item no. ERA-573 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 - Mercury, waste water Item no. ERA-574 Unit 15 mL 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 - pH, waste water Item no. ERA-577 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 - Demand, waste water Item no. ERA-578 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 - Complex Nutrients, waste water Item no. ERA-579 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 - 1,4-Dioxane Item no. ERA-597 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 378 (July 20, 2026 - September 3, 2026)WP 384 (January 19, 2027 - March 5, 2027)WP 390 (July 19, 2027 - September 2, 2027) Add to cart All product details
Organophosphorus Pesticides (OPP), WS Item no. ERA-681 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - EDB/DBCP/TCP, WasteWatR? Item no. ERA-692 Unit 2 mL Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Volatiles, PriorityPollutnT? Item no. ERA-710QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Base/Neutrals, priority pollutant (PriorityPollutnT TM) Item no. ERA-711QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Acids, priority pollutant (PriorityPollutnT TM) Item no. ERA-712QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Low-Level PAHs, priority pollutant (PriorityPollutnT TM) Item no. ERA-715 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Toxaphene, priority pollutant (PriorityPollutnT TM) Item no. ERA-717 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Chlorinated Acid Herbicides, priority pollutant (PriorityPollutnT TM) Item no. ERA-718 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - BTEX & MTBE in Water Item no. ERA-760QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Gasoline Range Organics (GRO) in Water Item no. ERA-762 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Gasoline Range Organics (GRO) in Water Item no. ERA-762QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Diesel Range Organics (DRO) in Water Item no. ERA-764 CAS Number [68476-34-6] Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Diesel Range Organics (DRO) in Water Item no. ERA-764QR CAS Number [68476-34-6] Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Bromide, waste water (WasteWatR TM) Item no. ERA-769 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Bromide, waste water (WasteWatR TM) Item no. ERA-769QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Nitrite, waste water (WasteWatR TM) Item no. ERA-770QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Silica, waste water (WasteWatR TM) Item no. ERA-775 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Volatiles, priority pollutant Item no. ERA-830 Unit 2 mL 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 - PCBs in Water (1), priority pollutant Item no. ERA-832S 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 - Acids, priority pollutant Item no. ERA-834 Unit 2 mL 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 - PCBs in Oil (1), priority pollutant Item no. ERA-835S 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 - Low-Level PAHs, priority pollutant Item no. ERA-836 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 - Color, Water Pollution Item no. ERA-882C Unit 30 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 - Boron, waste water Item no. ERA-886 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 - Bromide, waste water Item no. ERA-887 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 - Nitrite, waste water Item no. ERA-888 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 - Silica, waste water Item no. ERA-890 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 - Sulfide, waste water Item no. ERA-891 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 - Surfactants-MBAS, waste water Item no. ERA-892 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 372 (January 20, 2026 - March 6, 2026)WP 374 (March 16, 2026 - April 30, 2026)WP 375 (April 20, 2026 - June 4, 2026)WP 378 (July 20, 2026 - September 3, 2026)WP 380 (September 14, 2026 - October 29, 2026)WP 381 (October 16, 2026 - November 30, 2026) Add to cart All product details
Proficiency Testing - Turbidity, waste water Item no. ERA-893 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 Organic Halides (TOX), waste water Item no. ERA-895 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 - Low-Level Mercury, waste water Item no. ERA-896 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 - Hexavalent Chromium, waste water Item no. ERA-898 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 - Settleable Solids, waste water (WasteWatR TM) Item no. ERA-911 Unit each Analytes Select to compare Price on request - + Add to cart All product details