Proficiency Testing - Oxygen, dissolved in water Item no. ERA-212 Unit 500 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
QuiKResponse - Oxygen, dissolved in water Item no. ERA-213QR Unit 500 mL Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing Total Phenolics (4-AAP) Item no. ERA-273 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Glycols in Water Item no. ERA-401QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - 1,4-Dioxane Item no. ERA-402QR Unit 2 mL (ampoule) Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Solids, Concentrate, waste water (WasteWatR TM) Item no. ERA-4032QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Minerals QC plus QC Standard Item no. ERA-4053 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Oil & Grease Concentrate, waste water (WasteWatR TM) Item no. ERA-4122QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Volatile Aromatics Item no. ERA-4450 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 - Volatile Aromatics Item no. ERA-4452 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - PAH-GC & GCMS Item no. ERA-4880 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 - HEM / SGT-HEM, waste water Item no. ERA-489 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 - Lithium, PT Item no. ERA-4990 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 373 (February 16, 2026 - April 2, 2026)WP 379 (August 17, 2026 - October 1, 2026)WP 385 (February 15, 2027 - April 1, 2027)WP 391 (August 16, 2027 - September 30, 2027) Add to cart All product details
QuiKResponse - Trace Metals, waste water (WasteWatR TM) Item no. ERA-500QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Total Residual Chlorine, waste water (WasteWatR TM) Item no. ERA-501QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Cyanide, waste water (WasteWatR TM) Item no. ERA-502QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Hardness, waste water (WasteWatR TM) Item no. ERA-507QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Mercury, waste water (WasteWatR TM) Item no. ERA-514 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Mercury, waste water (WasteWatR TM) Item no. ERA-514QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Total Phenolics (4-AAP), waste water (WasteWatR TM) Item no. ERA-515 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Total Phenolics (4-AAP), waste water (WasteWatR TM) Item no. ERA-515QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Demand, waste water (WasteWatR TM) Item no. ERA-516 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Demand, waste water (WasteWatR TM) Item no. ERA-516QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Tin & Titanium, waste water (WasteWatR TM) Item no. ERA-517 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - HEM / SGT-HEM, waste water (WasteWatR TM) Item no. ERA-519 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Complex Nutrients, waste water (WasteWatR TM) Item no. ERA-525 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Sulfite Item no. ERA-534 Unit 10 mL Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Trace Metals, waste water Item no. ERA-586 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
QuiKResponse - Organophosphorus Pesticides (OPP), priority pollutant (PrPollutnT TM) Item no. ERA-665QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Total Organic Halides (TOX), waste water (WasteWatR TM) Item no. ERA-670 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Total Organic Halides (TOX), waste water (WasteWatR TM) Item no. ERA-670QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Nitrogen Pesticides, priority pollutant (PriorityPollutnT TM) Item no. ERA-674 Unit 2 mL Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Low-Level Nitroaromatics & Nitramines, priority pollutant (PrPollutnT TM) Item no. ERA-677QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Base/Neutrals, priority pollutant (PriorityPollutnT TM) Item no. ERA-711 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Acids, priority pollutant (PriorityPollutnT TM) Item no. ERA-712 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Organochlorine Pesticides, priority pollutant (PriorityPollutnT TM) Item no. ERA-713 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Organochlorine Pesticides, priority pollutant (PriorityPollutnT TM) Item no. ERA-713QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Low-Level PAHs, priority pollutant (PriorityPollutnT TM) Item no. ERA-715QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Chlordane, priority pollutant (PriorityPollutnT TM) Item no. ERA-716 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Chlordane, priority pollutant (PriorityPollutnT TM) Item no. ERA-716QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Carbamate Pesticides, priority pollutant (PriorityPollutnT TM) Item no. ERA-908QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Settleable Solids, waste water (WasteWatR TM) Item no. ERA-911QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Volatile Solids, waste water (WasteWatR TM) Item no. ERA-913QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Acidity, waste water (WasteWatR TM) Item no. ERA-915QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Low-Level Total Residual Chlorine Item no. ERA-917QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Boron, waste water (WasteWatR TM) Item no. ERA-919QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Low-Level Mercury, waste water (WasteWatR TM) Item no. ERA-931QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - pH, waste water (WasteWatR TM) Item no. ERA-977QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Hexavalent Chromium, waste water (WasteWatR TM) Item no. ERA-984 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Hexavalent Chromium, waste water (WasteWatR TM) Item no. ERA-984QR Unit each Analytes Select to compare Price on request - + Add to cart All product details