Sulfate - 1000 mg/L, 125 ml Item no. ERA-062 Unit 125 mL Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Minerals, waste water (WasteWatR TM) Item no. ERA-506 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Minerals, waste water (WasteWatR TM) Item no. ERA-506QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Minerals PT (Extra Volume) Item no. ERA-526 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Wisconsin Gasoline Range Org (GRO/PVOC) in Water Item no. ERA-649 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) 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 - Quality Control Product -Low-Level 1,2,3-TCP Item no. ERA-682 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Low-Level 1,2,3-TCP Item no. ERA-682QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Unregulated Volatiles, potable water (PotableWatR TM) Item no. ERA-683QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Haloacetic Acids (HAA), potable water (PotableWatR TM) Item no. ERA-684QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - 1,4-Dioxane Item no. ERA-689 Unit 2 mL (ampoule) Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - 1,4-Dioxane Item no. ERA-689QR Unit 2 mL (ampoule) Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Semivolatiles #1, potable water (PotableWatR TM) Item no. ERA-690QR 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 - Nitrite, potable water (PotableWatR TM) Item no. ERA-695 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Pesticides, potable water (PotableWatR TM) Item no. ERA-709QR Unit each 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
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
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
Certified Reference Material - Volatiles in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-721 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Low-Level PAHs in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-722 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Chlordane in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-725QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - PCBs in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-726QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Base/Neutrals & Acids in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-727 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Base/Neutrals & Acids in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-727QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Organochlorine Pesticides in Soil, priority pollutant (PrPollutnT TM) Item no. ERA-728 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - PCBs in Oil, priority pollutant (PriorityPollutnT TM) (1) Item no. ERA-729S 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
Complex Nutrients - Ready-To-Use RM - Waste water (alternatively CRM see Code ERA-525) Item no. ERA-741 Unit 500 mL Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Wisconsin Diesel Range Organics (DRO) in Water Item no. ERA-772QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Wisconsin Gasoline Range Org (GRO/PVOC) Water Item no. ERA-773 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Wisconsin Gasoline Range Org (GRO/PVOC) Water Item no. ERA-773QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Surfactants-MBAS, waste water (WasteWatR TM) Item no. ERA-776QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Turbidity, waste water (WasteWatR TM) Item no. ERA-777QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - pH, potable water (PotableWatR TM) Item no. ERA-779QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Surfactants-MBAS, potable water (PotableWatR TM) Item no. ERA-784QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Silica, potable water (PotableWatR TM) Item no. ERA-785QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Texas Low-Level Fuels (TPH) in Water Item no. ERA-794QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Texas Low-Level Fuels (TPH) in Soil Item no. ERA-796 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - PCBs in Oil Item no. ERA-817 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) SOIL 134 (April 27, 2026 - June 11, 2026)SOIL 135 (July 27, 2026 - September 10, 2026)SOIL 136 (October 23, 2026 - December 7, 2026)SOIL 137 (January 25, 2027 - March 11, 2027)SOIL 138 (April 26, 2027 - June 10, 2027)SOIL 139 (July 26, 2027 - September 9, 2027)SOIL 140 (October 22, 2027 - December 6, 2027) 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 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 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 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 - Chlordane, priority pollutant Item no. ERA-837 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) 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 - Toxaphene, priority pollutant Item no. ERA-838 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) 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 - Unregulated Volatiles, potable water Item no. ERA-841 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 356 (March 9, 2026 - April 23, 2026)WS 357 (April 13, 2026 - May 28, 2026)WS 358 (May 11, 2026 - June 25, 2026)WS 359 (June 8, 2026 -July 23, 2026)WS 360 (July 13, 2026 - August 27, 2026)WS 361 (August 10, 2026 - September 24, 2026)WS 362 (September 8, 2026 - October 23, 2026)WS 363 (October 9, 2026 - November 23, 2026)WS 364 (November 2, 2026 - December 17, 2026)WS 365 (December 7, 2026 - January 21, 2027) Add to cart All product details
Proficiency Testing - Nitroaromatics & Nitramines in Soil, priority pollutant Item no. ERA-871 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) SOIL 134 (April 27, 2026 - June 11, 2026)SOIL 135 (July 27, 2026 - September 10, 2026)SOIL 136 (October 23, 2026 - December 7, 2026)SOIL 137 (January 25, 2027 - March 11, 2027)SOIL 138 (April 26, 2027 - June 10, 2027)SOIL 139 (July 26, 2027 - September 9, 2027)SOIL 140 (October 22, 2027 - December 6, 2027) Add to cart All product details
Proficiency Testing - Anions in Soil, priority pollutant Item no. ERA-873 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) SOIL 134 (April 27, 2026 - June 11, 2026)SOIL 135 (July 27, 2026 - September 10, 2026)SOIL 136 (October 23, 2026 - December 7, 2026)SOIL 137 (January 25, 2027 - March 11, 2027)SOIL 138 (April 26, 2027 - June 10, 2027)SOIL 139 (July 26, 2027 - September 9, 2027)SOIL 140 (October 22, 2027 - December 6, 2027) Add to cart All product details
Proficiency Testing - Low-Level Total Residual Chlorine Item no. ERA-881 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) 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 - Settleable Solids, waste water Item no. ERA-883 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) 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