Zearalenone in maize oil Item no. AOK-PT-O5705B CAS Number n/a Unit 30 mL Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) O5705B (October 20, 2025 - November 24, 2025) Add to cart Select to compare
Proficiency Testing - Hydrogen Halides & Halogens in Impinger Solution Pair Item no. ERA-1040 CAS Number 2 Analytes Unit each Analyte(s) Total Halides + 1 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) AE 078 (October 30, 2026 - December 14, 2026)AE 079 (January 29, 2027 - March 15, 2027)AE 080 (April 30, 2027 - June 14, 2027)AE 081 (July 30, 2027 - September 13, 2027)AE 082 (October 29, 2027 - December 13, 2027)AE 083 (January 1, 2028 - March 16, 2028)AE 084 (May 1, 2028 - June 15, 2028)AE 085 (July 31, 2028 - September 14, 2028)AE 086 (October 27, 2028 - December 11, 2028)AE 087 (January 29, 2029 - March 15, 2029)AE 088 (April 30, 2029 - June 14, 2029)AE 089 (July 30, 2029 - September 13, 2029)AE 090 (October 26, 2029 - December 10, 2029) Add to cart Select to compare
Certified Reference Material - Common Inorganics (Soft Water), clean water (synthetic drinking water matrix) Item no. ERA-1347 CAS Number 12 Analytes Unit each Analyte(s) Alkalinity as CaCO3 + 11 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Trace Metals, waste water (WasteWatR TM) Item no. ERA-500QR CAS Number 21 Analytes Unit each Analyte(s) Aluminium (Al) + 20 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Proficiency Testing - Inorganic Disinfection 2 Item no. ERA-5260 CAS Number 2 Analytes Unit each Analyte(s) Bromate + 1 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WS 363 (October 9, 2026 - November 23, 2026)WS 364 (November 2, 2026 - December 17, 2026)WS 365 (December 7, 2026 - January 21, 2027)WS 366 (January 11, 2027 - February 25, 2027)WS 367 (February 8, 2027 - March 25, 2027)WS 368 (March 8, 2027 - April 22, 2027)WS 369 (April 12, 2027 - May 27, 2027)WS 370 (May 10, 2027 -June 24, 2027)WS 371 (June 7, 2027 - July 22, 2027)WS 372 (July 12, 2027 - August 26, 2027)WS 373 (August 9, 2027 - September 23, 2027)WS 374 (September 7, 2027 - October 22, 2027)WS 375 (October 8, 2027 - November 22, 2027)WS 376 (November 1, 2027 - December 16, 2027)WS 377 (December 6, 2027 - January 20, 2028)WS 378 (January 10, 2028 - February 24, 2028)WS 379 (February 7, 2028 - March 23, 2028)WS 380 (March 6, 2028 - April 21, 2028)WS 381 (April 10, 2028 - May 25, 2028)WS 382 (May 8, 2028 -June 22, 2028)WS 383 (June 5, 2028 - July 20, 2028)WS 384 (July 10, 2028 - August 24, 2028)WS 385 (August 7, 2028 - September 21, 2028)WS 386 (September 5, 2028 - October 20, 2028)WS 387 (October 6, 2028 - November 20, 2028)WS 388 (November 6, 2028 - December 21, 2028)WS 389 (December 4, 2028 - January 18, 2029)WS 390 (January 8, 2029 - February 22, 2029)WS 391 (February 5, 2029 - March 22, 2029)WS 392 (March 5, 2029 - April 20, 2029)WS 393 (April 9, 2029 - May 24, 2029)WS 394 (May 7, 2029 -June 21, 2029)WS 395 (June 4, 2029 - July 20, 2029)WS 396 (July 9, 2029 - August 23, 2029)WS 397 (August 6, 2029 - September 20, 2029)WS 398 (September 4, 2029 - October 19, 2029)WS 399 (October 5, 2029 - November 19, 2029)WS 400 (November 5, 2029 - December 20, 2029)WS 401 (December 3, 2029 - January 17, 2030) Add to cart Select to compare
QuiKResponse - Inorganic Disinfection 1 Item no. ERA-5272QR CAS Number 2 Analytes Unit each Analyte(s) Chlorate + 1 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Proficiency Testing - Tin & Titanium, waste water Item no. ERA-573 CAS Number 2 Analytes Unit each Analyte(s) Tin (Sn) + 1 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027)WP 384 (January 19, 2027 - March 5, 2027)WP 385 (February 15, 2027 - April 1, 2027)WP 386 (March 15, 2027 - April 29, 2027)WP 387 (April 19, 2027 - June 3, 2027)WP 388 (May 17, 2027 - July 1, 2027)WP 389 (June 14, 2027 - July 29, 2027)WP 390 (July 19, 2027 - September 2, 2027)WP 391 (August 16, 2027 - September 30, 2027)WP 392 (September 13, 2027 - October 28, 2027)WP 393 (October 15, 2027 - November 29, 2027)WP 394 (November 5, 2027 - December 20, 2027)WP 395 (December 13, 2027 - January 27, 2028)WP 396 (January 18, 2028 - March 3, 2028)WP 397 (February 14, 2028 - March 30, 2028)WP 398 (March 13, 2028 - April 27, 2028)WP 399 (April 17, 2028 - June 1, 2028)WP 400 (May 15, 2028 - June 29, 2028)WP 401 (June 12, 2028 - July 27, 2028)WP 402 (July 17, 2028 - August 31, 2028)WP 403 (August 14, 2028 - September 28, 2028)WP 404 (September 11, 2028 - October 26, 2028)WP 405 (October 13, 2028 - November 27, 2028)WP 406 (November 13, 2028 - December 28, 2028)WP 407 (December 11, 2028 - January 25, 2029)WP 408 (January 16, 2029 - March 2, 2029)WP 409 (February 12, 2029 - March 29, 2029)WP 410 (March 12, 2029 - April 26, 2029)WP 411 (April 16, 2029 - May 31, 2029)WP 412 (May 14, 2029 - June 28, 2029)WP 413 (June 11, 2029 - July 26, 2029)WP 414 (July 16, 2029 - August 30, 2029)WP 415 (August 13, 2029 - September 27, 2029)WP 416 (September 10, 2029 - October 25, 2029)WP 417 (October 12, 2029 - November 26, 2029)WP 418 (November 12, 2029 - December 27, 2029)WP 419 (December 10, 2029 - January 24, 2030) Add to cart Select to compare
Proficiency Testing - Metals in sewage sludge (Sewage SludG TM) Item no. ERA-619 CAS Number 25 Analytes Unit each Analyte(s) Aluminium (Al) + 24 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) 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)SOIL 141 (January 24, 2028 - March 9, 2028)SOIL 142 (April 24, 2028 - June 8, 2028)SOIL 143 (July 24, 2028 - September 7, 2028)SOIL 144 (October 20, 2028 - December 4, 2028)SOIL 145 (January 22, 2029 - March 8, 2029)SOIL 146 (April 23, 2029 - June 7, 2029)SOIL 147 (July 23, 2029 - September 6, 2029)SOIL 148 (October 19, 2029 - December 3, 2029) Add to cart Select to compare
Certified Reference Material - Color, Water Supply Item no. ERA-661C CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - o-Phosphate Nutrients, potable water (PotableWatR TM) Item no. ERA-667QR CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Total Organic Halides (TOX), waste water (WasteWatR TM) Item no. ERA-670QR CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - 1,4-Dioxane Item no. ERA-689QR CAS Number n/a Unit each Structural formula: n/a View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Base/Neutrals, priority pollutant (PriorityPollutnT TM) Item no. ERA-711 CAS Number 71 Analytes Unit each Analyte(s) Biphenyl + 70 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Organochlorine Pesticides, priority pollutant (PriorityPollutnT TM) Item no. ERA-713 CAS Number 20 Analytes Unit each Analyte(s) 4,4'-DDD + 19 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Organochlorine Pesticides, priority pollutant (PriorityPollutnT TM) Item no. ERA-713QR CAS Number 20 Analytes Unit each Analyte(s) 4,4'-DDD + 19 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Toxaphene in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-724QR CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Base/Neutrals & Acids in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-727 CAS Number 82 Analytes Unit each Analyte(s) 1,2,4,5-Tetrachlorobenzene + 81 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Base/Neutrals & Acids in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-727QR CAS Number 77 Analytes Unit each Analyte(s) 1,2,4,5-Tetrachlorobenzene + 76 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - PCBs in Oil, priority pollutant (PriorityPollutnT TM) (1) Item no. ERA-729SQR CAS Number 3 Analytes Unit each Analyte(s) Aroclor 1016/1242 + 2 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - TCLP Organochlorine Pesticides Item no. ERA-732QR CAS Number 5 Analytes Unit each Analyte(s) Endrin + 4 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - PFAS Drinking Water (ISO 17034) Item no. ERA-733QR CAS Number 32 Analytes Unit each Analyte(s) 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) + 31 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - PCBs in Water, priority pollutant (PriorityPollutnT TM) (1) Item no. ERA-734SQR CAS Number 7 Analytes Unit each Analyte(s) Aroclor 1016 + 6 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - TCLP Semivolatiles Item no. ERA-737QR CAS Number 5 Analytes Unit each Analyte(s) 2,4,5-Trichlorophenol + 4 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - BTEX & MTBE in Soil Item no. ERA-761 CAS Number 7 Analytes Unit each Analyte(s) Benzene + 6 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Gasoline Range Organics (GRO) in Water Item no. ERA-762 CAS Number 5 Analytes Unit each Analyte(s) Benzene in GRO + 4 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Wisconsin Diesel Range Organics (DRO) in Water Item no. ERA-772QR CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Wisconsin Gasoline Range Org (GRO/PVOC) Water Item no. ERA-773 CAS Number 11 Analytes Unit each Analyte(s) 1,2,4-Trimethylbenzene + 10 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Wisconsin Gasoline Range Org (GRO/PVOC) Water Item no. ERA-773QR CAS Number 11 Analytes Unit each Analyte(s) 1,2,4-Trimethylbenzene + 10 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Silica, waste water (WasteWatR TM) Item no. ERA-775 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Surfactants-MBAS, waste water (WasteWatR TM) Item no. ERA-776 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Turbidity, waste water (WasteWatR TM) Item no. ERA-777 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Turbidity, waste water (WasteWatR TM) Item no. ERA-777QR CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - pH, potable water (PotableWatR TM) Item no. ERA-779 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Texas High-Level Fuels (TPH) in Water Item no. ERA-795QR CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Proficiency Testing - Volatiles, priority pollutant Item no. ERA-830 CAS Number 67 Analytes Unit each Analyte(s) 1,1,1,2-Tetrachloroethane + 66 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027)WP 384 (January 19, 2027 - March 5, 2027)WP 385 (February 15, 2027 - April 1, 2027)WP 386 (March 15, 2027 - April 29, 2027)WP 387 (April 19, 2027 - June 3, 2027)WP 388 (May 17, 2027 - July 1, 2027)WP 389 (June 14, 2027 - July 29, 2027)WP 390 (July 19, 2027 - September 2, 2027)WP 391 (August 16, 2027 - September 30, 2027)WP 392 (September 13, 2027 - October 28, 2027)WP 393 (October 15, 2027 - November 29, 2027)WP 394 (November 5, 2027 - December 20, 2027)WP 395 (December 13, 2027 - January 27, 2028)WP 396 (January 18, 2028 - March 3, 2028)WP 397 (February 14, 2028 - March 30, 2028)WP 398 (March 13, 2028 - April 27, 2028)WP 399 (April 17, 2028 - June 1, 2028)WP 400 (May 15, 2028 - June 29, 2028)WP 401 (June 12, 2028 - July 27, 2028)WP 402 (July 17, 2028 - August 31, 2028)WP 403 (August 14, 2028 - September 28, 2028)WP 404 (September 11, 2028 - October 26, 2028)WP 405 (October 13, 2028 - November 27, 2028)WP 406 (November 13, 2028 - December 28, 2028)WP 407 (December 11, 2028 - January 25, 2029)WP 408 (January 16, 2029 - March 2, 2029)WP 409 (February 12, 2029 - March 29, 2029)WP 410 (March 12, 2029 - April 26, 2029)WP 411 (April 16, 2029 - May 31, 2029)WP 412 (May 14, 2029 - June 28, 2029)WP 413 (June 11, 2029 - July 26, 2029)WP 414 (July 16, 2029 - August 30, 2029)WP 415 (August 13, 2029 - September 27, 2029)WP 416 (September 10, 2029 - October 25, 2029)WP 417 (October 12, 2029 - November 26, 2029)WP 418 (November 12, 2029 - December 27, 2029)WP 419 (December 10, 2029 - January 24, 2030) Add to cart Select to compare
Proficiency Testing - Organochlorine Pesticides, priority pollutant Item no. ERA-831 CAS Number 20 Analytes Unit each Analyte(s) 4,4'-DDD + 19 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027)WP 384 (January 19, 2027 - March 5, 2027)WP 385 (February 15, 2027 - April 1, 2027)WP 386 (March 15, 2027 - April 29, 2027)WP 387 (April 19, 2027 - June 3, 2027)WP 388 (May 17, 2027 - July 1, 2027)WP 389 (June 14, 2027 - July 29, 2027)WP 390 (July 19, 2027 - September 2, 2027)WP 391 (August 16, 2027 - September 30, 2027)WP 392 (September 13, 2027 - October 28, 2027)WP 393 (October 15, 2027 - November 29, 2027)WP 394 (November 5, 2027 - December 20, 2027)WP 395 (December 13, 2027 - January 27, 2028)WP 396 (January 18, 2028 - March 3, 2028)WP 397 (February 14, 2028 - March 30, 2028)WP 398 (March 13, 2028 - April 27, 2028)WP 399 (April 17, 2028 - June 1, 2028)WP 400 (May 15, 2028 - June 29, 2028)WP 401 (June 12, 2028 - July 27, 2028)WP 402 (July 17, 2028 - August 31, 2028)WP 403 (August 14, 2028 - September 28, 2028)WP 404 (September 11, 2028 - October 26, 2028)WP 405 (October 13, 2028 - November 27, 2028)WP 406 (November 13, 2028 - December 28, 2028)WP 407 (December 11, 2028 - January 25, 2029)WP 408 (January 16, 2029 - March 2, 2029)WP 409 (February 12, 2029 - March 29, 2029)WP 410 (March 12, 2029 - April 26, 2029)WP 411 (April 16, 2029 - May 31, 2029)WP 412 (May 14, 2029 - June 28, 2029)WP 413 (June 11, 2029 - July 26, 2029)WP 414 (July 16, 2029 - August 30, 2029)WP 415 (August 13, 2029 - September 27, 2029)WP 416 (September 10, 2029 - October 25, 2029)WP 417 (October 12, 2029 - November 26, 2029)WP 418 (November 12, 2029 - December 27, 2029)WP 419 (December 10, 2029 - January 24, 2030) Add to cart Select to compare
Proficiency Testing - PCBs in Water (1), priority pollutant Item no. ERA-832S CAS Number 7 Analytes Unit each Analyte(s) Aroclor 1016 + 6 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027)WP 384 (January 19, 2027 - March 5, 2027)WP 385 (February 15, 2027 - April 1, 2027)WP 386 (March 15, 2027 - April 29, 2027)WP 387 (April 19, 2027 - June 3, 2027)WP 388 (May 17, 2027 - July 1, 2027)WP 389 (June 14, 2027 - July 29, 2027)WP 390 (July 19, 2027 - September 2, 2027)WP 391 (August 16, 2027 - September 30, 2027)WP 392 (September 13, 2027 - October 28, 2027)WP 393 (October 15, 2027 - November 29, 2027)WP 394 (November 5, 2027 - December 20, 2027)WP 395 (December 13, 2027 - January 27, 2028)WP 396 (January 18, 2028 - March 3, 2028)WP 397 (February 14, 2028 - March 30, 2028)WP 398 (March 13, 2028 - April 27, 2028)WP 399 (April 17, 2028 - June 1, 2028)WP 400 (May 15, 2028 - June 29, 2028)WP 401 (June 12, 2028 - July 27, 2028)WP 402 (July 17, 2028 - August 31, 2028)WP 403 (August 14, 2028 - September 28, 2028)WP 404 (September 11, 2028 - October 26, 2028)WP 405 (October 13, 2028 - November 27, 2028)WP 406 (November 13, 2028 - December 28, 2028)WP 407 (December 11, 2028 - January 25, 2029)WP 408 (January 16, 2029 - March 2, 2029)WP 409 (February 12, 2029 - March 29, 2029)WP 410 (March 12, 2029 - April 26, 2029)WP 411 (April 16, 2029 - May 31, 2029)WP 412 (May 14, 2029 - June 28, 2029)WP 413 (June 11, 2029 - July 26, 2029)WP 414 (July 16, 2029 - August 30, 2029)WP 415 (August 13, 2029 - September 27, 2029)WP 416 (September 10, 2029 - October 25, 2029)WP 417 (October 12, 2029 - November 26, 2029)WP 418 (November 12, 2029 - December 27, 2029)WP 419 (December 10, 2029 - January 24, 2030) Add to cart Select to compare
Proficiency Testing - Base/Neutrals, priority pollutant Item no. ERA-833 CAS Number 71 Analytes Unit each Analyte(s) 1,2,4,5-Tetrachlorobenzene + 70 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027)WP 384 (January 19, 2027 - March 5, 2027)WP 385 (February 15, 2027 - April 1, 2027)WP 386 (March 15, 2027 - April 29, 2027)WP 387 (April 19, 2027 - June 3, 2027)WP 388 (May 17, 2027 - July 1, 2027)WP 389 (June 14, 2027 - July 29, 2027)WP 390 (July 19, 2027 - September 2, 2027)WP 391 (August 16, 2027 - September 30, 2027)WP 392 (September 13, 2027 - October 28, 2027)WP 393 (October 15, 2027 - November 29, 2027)WP 394 (November 5, 2027 - December 20, 2027)WP 395 (December 13, 2027 - January 27, 2028)WP 396 (January 18, 2028 - March 3, 2028)WP 397 (February 14, 2028 - March 30, 2028)WP 398 (March 13, 2028 - April 27, 2028)WP 399 (April 17, 2028 - June 1, 2028)WP 400 (May 15, 2028 - June 29, 2028)WP 401 (June 12, 2028 - July 27, 2028)WP 402 (July 17, 2028 - August 31, 2028)WP 403 (August 14, 2028 - September 28, 2028)WP 404 (September 11, 2028 - October 26, 2028)WP 405 (October 13, 2028 - November 27, 2028)WP 406 (November 13, 2028 - December 28, 2028)WP 407 (December 11, 2028 - January 25, 2029)WP 408 (January 16, 2029 - March 2, 2029)WP 409 (February 12, 2029 - March 29, 2029)WP 410 (March 12, 2029 - April 26, 2029)WP 411 (April 16, 2029 - May 31, 2029)WP 412 (May 14, 2029 - June 28, 2029)WP 413 (June 11, 2029 - July 26, 2029)WP 414 (July 16, 2029 - August 30, 2029)WP 415 (August 13, 2029 - September 27, 2029)WP 416 (September 10, 2029 - October 25, 2029)WP 417 (October 12, 2029 - November 26, 2029)WP 418 (November 12, 2029 - December 27, 2029)WP 419 (December 10, 2029 - January 24, 2030) Add to cart Select to compare
Proficiency Testing - PCBs as Decachlorobiphenyl Item no. ERA-839 CAS Number 8 Analytes Unit each Analyte(s) Aroclor 1016 + 7 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WS 363 (October 9, 2026 - November 23, 2026)WS 366 (January 11, 2027 - February 25, 2027)WS 369 (April 12, 2027 - May 27, 2027)WS 372 (July 12, 2027 - August 26, 2027)WS 375 (October 8, 2027 - November 22, 2027)WS 378 (January 10, 2028 - February 24, 2028)WS 381 (April 10, 2028 - May 25, 2028)WS 384 (July 10, 2028 - August 24, 2028)WS 387 (October 6, 2028 - November 20, 2028)WS 390 (January 8, 2029 - February 22, 2029)WS 393 (April 9, 2029 - May 24, 2029)WS 396 (July 9, 2029 - August 23, 2029)WS 399 (October 5, 2029 - November 19, 2029) Add to cart Select to compare
Proficiency Testing - Semivolatiles #2 Herbicides Item no. ERA-849 CAS Number 4 Analytes Unit each Analyte(s) Diquat + 3 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WS 363 (October 9, 2026 - November 23, 2026)WS 364 (November 2, 2026 - December 17, 2026)WS 365 (December 7, 2026 - January 21, 2027)WS 366 (January 11, 2027 - February 25, 2027)WS 367 (February 8, 2027 - March 25, 2027)WS 368 (March 8, 2027 - April 22, 2027)WS 369 (April 12, 2027 - May 27, 2027)WS 370 (May 10, 2027 -June 24, 2027)WS 371 (June 7, 2027 - July 22, 2027)WS 372 (July 12, 2027 - August 26, 2027)WS 373 (August 9, 2027 - September 23, 2027)WS 374 (September 7, 2027 - October 22, 2027)WS 375 (October 8, 2027 - November 22, 2027)WS 376 (November 1, 2027 - December 16, 2027)WS 377 (December 6, 2027 - January 20, 2028)WS 378 (January 10, 2028 - February 24, 2028)WS 379 (February 7, 2028 - March 23, 2028)WS 380 (March 6, 2028 - April 21, 2028)WS 381 (April 10, 2028 - May 25, 2028)WS 382 (May 8, 2028 -June 22, 2028)WS 383 (June 5, 2028 - July 20, 2028)WS 384 (July 10, 2028 - August 24, 2028)WS 385 (August 7, 2028 - September 21, 2028)WS 386 (September 5, 2028 - October 20, 2028)WS 387 (October 6, 2028 - November 20, 2028)WS 388 (November 6, 2028 - December 21, 2028)WS 389 (December 4, 2028 - January 18, 2029)WS 390 (January 8, 2029 - February 22, 2029)WS 391 (February 5, 2029 - March 22, 2029)WS 392 (March 5, 2029 - April 20, 2029)WS 393 (April 9, 2029 - May 24, 2029)WS 394 (May 7, 2029 -June 21, 2029)WS 395 (June 4, 2029 - July 20, 2029)WS 396 (July 9, 2029 - August 23, 2029)WS 397 (August 6, 2029 - September 20, 2029)WS 398 (September 4, 2029 - October 19, 2029)WS 399 (October 5, 2029 - November 19, 2029)WS 400 (November 5, 2029 - December 20, 2029)WS 401 (December 3, 2029 - January 17, 2030) Add to cart Select to compare
Proficiency Testing - Chlorinated Acid Herbicides, potable water Item no. ERA-851 CAS Number 16 Analytes Unit each Analyte(s) 2,4,5-T + 15 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WS 363 (October 9, 2026 - November 23, 2026)WS 364 (November 2, 2026 - December 17, 2026)WS 365 (December 7, 2026 - January 21, 2027)WS 366 (January 11, 2027 - February 25, 2027)WS 367 (February 8, 2027 - March 25, 2027)WS 368 (March 8, 2027 - April 22, 2027)WS 369 (April 12, 2027 - May 27, 2027)WS 370 (May 10, 2027 -June 24, 2027)WS 371 (June 7, 2027 - July 22, 2027)WS 372 (July 12, 2027 - August 26, 2027)WS 373 (August 9, 2027 - September 23, 2027)WS 374 (September 7, 2027 - October 22, 2027)WS 375 (October 8, 2027 - November 22, 2027)WS 376 (November 1, 2027 - December 16, 2027)WS 377 (December 6, 2027 - January 20, 2028)WS 378 (January 10, 2028 - February 24, 2028)WS 379 (February 7, 2028 - March 23, 2028)WS 380 (March 6, 2028 - April 21, 2028)WS 381 (April 10, 2028 - May 25, 2028)WS 382 (May 8, 2028 -June 22, 2028)WS 383 (June 5, 2028 - July 20, 2028)WS 384 (July 10, 2028 - August 24, 2028)WS 385 (August 7, 2028 - September 21, 2028)WS 386 (September 5, 2028 - October 20, 2028)WS 387 (October 6, 2028 - November 20, 2028)WS 388 (November 6, 2028 - December 21, 2028)WS 389 (December 4, 2028 - January 18, 2029)WS 390 (January 8, 2029 - February 22, 2029)WS 391 (February 5, 2029 - March 22, 2029)WS 392 (March 5, 2029 - April 20, 2029)WS 393 (April 9, 2029 - May 24, 2029)WS 394 (May 7, 2029 -June 21, 2029)WS 395 (June 4, 2029 - July 20, 2029)WS 396 (July 9, 2029 - August 23, 2029)WS 397 (August 6, 2029 - September 20, 2029)WS 398 (September 4, 2029 - October 19, 2029)WS 399 (October 5, 2029 - November 19, 2029)WS 400 (November 5, 2029 - December 20, 2029)WS 401 (December 3, 2029 - January 17, 2030) Add to cart Select to compare
Certified Reference Material - PCBs in Water - 1242 Item no. ERA-863 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - PCBs in Water - 1248 Item no. ERA-864 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - PCBs in Water - 1254 Item no. ERA-865 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Proficiency Testing - Low-Level Total Residual Chlorine Item no. ERA-881 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027)WP 384 (January 19, 2027 - March 5, 2027)WP 385 (February 15, 2027 - April 1, 2027)WP 386 (March 15, 2027 - April 29, 2027)WP 387 (April 19, 2027 - June 3, 2027)WP 388 (May 17, 2027 - July 1, 2027)WP 389 (June 14, 2027 - July 29, 2027)WP 390 (July 19, 2027 - September 2, 2027)WP 391 (August 16, 2027 - September 30, 2027)WP 392 (September 13, 2027 - October 28, 2027)WP 393 (October 15, 2027 - November 29, 2027)WP 394 (November 5, 2027 - December 20, 2027)WP 395 (December 13, 2027 - January 27, 2028)WP 396 (January 18, 2028 - March 3, 2028)WP 397 (February 14, 2028 - March 30, 2028)WP 398 (March 13, 2028 - April 27, 2028)WP 399 (April 17, 2028 - June 1, 2028)WP 400 (May 15, 2028 - June 29, 2028)WP 401 (June 12, 2028 - July 27, 2028)WP 402 (July 17, 2028 - August 31, 2028)WP 403 (August 14, 2028 - September 28, 2028)WP 404 (September 11, 2028 - October 26, 2028)WP 405 (October 13, 2028 - November 27, 2028)WP 406 (November 13, 2028 - December 28, 2028)WP 407 (December 11, 2028 - January 25, 2029)WP 408 (January 16, 2029 - March 2, 2029)WP 409 (February 12, 2029 - March 29, 2029)WP 410 (March 12, 2029 - April 26, 2029)WP 411 (April 16, 2029 - May 31, 2029)WP 412 (May 14, 2029 - June 28, 2029)WP 413 (June 11, 2029 - July 26, 2029)WP 414 (July 16, 2029 - August 30, 2029)WP 415 (August 13, 2029 - September 27, 2029)WP 416 (September 10, 2029 - October 25, 2029)WP 417 (October 12, 2029 - November 26, 2029)WP 418 (November 12, 2029 - December 27, 2029)WP 419 (December 10, 2029 - January 24, 2030) Add to cart Select to compare
Certified Reference Material - Settleable Solids, waste water (WasteWatR TM) Item no. ERA-911 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Volatile Solids, waste water (WasteWatR TM) Item no. ERA-913 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Ready-to-Use VOAs in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-924QR CAS Number 51 Analytes Unit each Analyte(s) 1,1,1,2-Tetrachloroethane + 50 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Low-Level Mercury, waste water (WasteWatR TM) Item no. ERA-931 CAS Number n/a Unit each Analyte(s) Analyte(s) + Structural Formula + View all product details Price on request - + Add to cart Select to compare
PFAS Secondary Source Std., Wastewater/Solids Item no. ERA-PFAS10001 CAS Number 44 Analytes Unit each Analyte(s) 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) + 43 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare