Proficiency Testing - Texas Low-Level Fuels (TPH) in Water Item no. ERA-476 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 351 (April 15, 2024 - May 30, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 360 (January 21, 2025 - March 7, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 369 (October 10, 2025 - November 24, 2025) Add to cart All product details
Proficiency Testing - Texas High-Level Fuels (TPH) in Water Item no. ERA-477 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) Add to cart All product details
Proficiency Testing - Texas Low-Level Fuels (TPH) in Soil Item no. ERA-478 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) SOIL 126 (April 22, 2024 - June 6, 2024)SOIL 127 (July 22, 2024 - September 5, 2024)SOIL 128 (October 18, 2024 - December 2, 2024)SOIL 129 (January 27, 2025 - March 13, 2025)SOIL 130 (April 21, 2025 - June 5, 2025)SOIL 131 (July 21, 2025 - September 4, 2025)SOIL 132 (October 17, 2025 - December 1, 2025)SOIL 133 (January 26, 2026 - March 12, 2026)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 - Texas High-Level Fuels (TPH) in Soil Item no. ERA-479 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) SOIL 126 (April 22, 2024 - June 6, 2024)SOIL 127 (July 22, 2024 - September 5, 2024)SOIL 128 (October 18, 2024 - December 2, 2024)SOIL 129 (January 27, 2025 - March 13, 2025)SOIL 130 (April 21, 2025 - June 5, 2025)SOIL 131 (July 21, 2025 - September 4, 2025)SOIL 132 (October 17, 2025 - December 1, 2025)SOIL 133 (January 26, 2026 - March 12, 2026)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 - Massachusetts VPH in Water Item no. ERA-481 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) Add to cart All product details
Proficiency Testing - Massachusetts EPH in Water Item no. ERA-482 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) Add to cart All product details
Proficiency Testing - Massachusetts VPH in Soil Item no. ERA-483 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) SOIL 126 (April 22, 2024 - June 6, 2024)SOIL 127 (July 22, 2024 - September 5, 2024)SOIL 128 (October 18, 2024 - December 2, 2024)SOIL 129 (January 27, 2025 - March 13, 2025)SOIL 130 (April 21, 2025 - June 5, 2025)SOIL 131 (July 21, 2025 - September 4, 2025)SOIL 132 (October 17, 2025 - December 1, 2025)SOIL 133 (January 26, 2026 - March 12, 2026)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 - Nitrogen Pesticides, priority pollutant Item no. ERA-487 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 351 (April 15, 2024 - May 30, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 360 (January 21, 2025 - March 7, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 369 (October 10, 2025 - November 24, 2025) Add to cart All product details
Proficiency Testing - Arizona TPH in Soil Item no. ERA-488 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) SOIL 126 (April 22, 2024 - June 6, 2024)SOIL 127 (July 22, 2024 - September 5, 2024)SOIL 128 (October 18, 2024 - December 2, 2024)SOIL 129 (January 27, 2025 - March 13, 2025)SOIL 130 (April 21, 2025 - June 5, 2025)SOIL 131 (July 21, 2025 - September 4, 2025)SOIL 132 (October 17, 2025 - December 1, 2025)SOIL 133 (January 26, 2026 - March 12, 2026)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 - PAH-GC & GCMS Item no. ERA-4880 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 351 (April 15, 2024 - May 30, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 360 (January 21, 2025 - March 7, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 369 (October 10, 2025 - November 24, 2025) 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 351 (April 15, 2024 - May 30, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 360 (January 21, 2025 - March 7, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 369 (October 10, 2025 - November 24, 2025) 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 355 (August 12, 2024 - September 26, 2024)WP 361 (February 17, 2025 - April 3, 2025)WP 367 (August 11, 2025 - September 25, 2025) Add to cart All product details
Proficiency Testing - Solids, Concentrate, WS, potable water Item no. ERA-5150 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 332 (March 4, 2024 - April 18, 2024)WS 333 (April 8, 2024 - May 23, 2024)WS 334 (May 6, 2024 - June 20 ,2024)WS 335 (June 03, 2024 -July 18, 2024)WS 336 (July 8, 2024 - August 22, 2024)WS 337 (August 5, 2024 - September 19, 2024)WS 338 (September 3, 2024 - October 18, 2024)WS 339 (October 4, 2024 - November 18, 2024)WS 340 (November 4, 2024 - December 19, 2024)WS 341 (December 2, 2024 - January 16, 2025)WS 342 (January 13, 2025 - February 27, 2025)WS 343 (February 10, 2025 - March 27, 2025)WS 344 (March 3, 2025 - April 17, 2025)WS 345 (April 7, 2025 - May 22, 2025)WS 346 (May 5, 2025 - June 19 ,2025)WS 347 (June 9, 2025 -July 24, 2025)WS 348 (July 7, 2025 - August 21, 2025)WS 349 (August 4, 2025 - September 18, 2025)WS 350 (September 8, 2025 - October 23, 2025)WS 351 (October 3, 2025 - November 17, 2025)WS 352 (October 31, 2025 - December 15, 2025)WS 353 (December 1, 2025 - January 15, 2026) Add to cart All product details
Certified Reference Material - Solids, Concentrate, potable water (PotableWatR TM) Item no. ERA-5152 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
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 - Inorganic Disinfection 2 Item no. ERA-5262 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Inorganic Disinfection 1 Item no. ERA-5270 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 332 (March 4, 2024 - April 18, 2024)WS 333 (April 8, 2024 - May 23, 2024)WS 334 (May 6, 2024 - June 20 ,2024)WS 335 (June 03, 2024 -July 18, 2024)WS 336 (July 8, 2024 - August 22, 2024)WS 337 (August 5, 2024 - September 19, 2024)WS 338 (September 3, 2024 - October 18, 2024)WS 339 (October 4, 2024 - November 18, 2024)WS 340 (November 4, 2024 - December 19, 2024)WS 341 (December 2, 2024 - January 16, 2025)WS 342 (January 13, 2025 - February 27, 2025)WS 343 (February 10, 2025 - March 27, 2025)WS 344 (March 3, 2025 - April 17, 2025)WS 345 (April 7, 2025 - May 22, 2025)WS 346 (May 5, 2025 - June 19 ,2025)WS 347 (June 9, 2025 -July 24, 2025)WS 348 (July 7, 2025 - August 21, 2025)WS 349 (August 4, 2025 - September 18, 2025)WS 350 (September 8, 2025 - October 23, 2025)WS 351 (October 3, 2025 - November 17, 2025)WS 352 (October 31, 2025 - December 15, 2025)WS 353 (December 1, 2025 - January 15, 2026) Add to cart All product details
Certified Reference Material - Inorganic Disinfection 1 QC Item no. ERA-5272 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
Certified Reference Material - 1,4-Dioxane Item no. ERA-538 Unit 2 mL (ampoule) Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - 1,4-Dioxane Item no. ERA-538QR Unit 2 mL (ampoule) Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - TCLP Metals in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-544 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Oil & Grease (O&G) in Soil QC Item no. ERA-549 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Mercury, potable water Item no. ERA-551 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 332 (March 4, 2024 - April 18, 2024)WS 333 (April 8, 2024 - May 23, 2024)WS 334 (May 6, 2024 - June 20 ,2024)WS 335 (June 03, 2024 -July 18, 2024)WS 336 (July 8, 2024 - August 22, 2024)WS 337 (August 5, 2024 - September 19, 2024)WS 338 (September 3, 2024 - October 18, 2024)WS 339 (October 4, 2024 - November 18, 2024)WS 340 (November 4, 2024 - December 19, 2024)WS 341 (December 2, 2024 - January 16, 2025)WS 342 (January 13, 2025 - February 27, 2025)WS 343 (February 10, 2025 - March 27, 2025)WS 344 (March 3, 2025 - April 17, 2025)WS 345 (April 7, 2025 - May 22, 2025)WS 346 (May 5, 2025 - June 19 ,2025)WS 347 (June 9, 2025 -July 24, 2025)WS 348 (July 7, 2025 - August 21, 2025)WS 349 (August 4, 2025 - September 18, 2025)WS 350 (September 8, 2025 - October 23, 2025)WS 351 (October 3, 2025 - November 17, 2025)WS 352 (October 31, 2025 - December 15, 2025)WS 353 (December 1, 2025 - January 15, 2026) Add to cart All product details
Proficiency Testing - pH, potable water Item no. ERA-552 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 332 (March 4, 2024 - April 18, 2024)WS 333 (April 8, 2024 - May 23, 2024)WS 334 (May 6, 2024 - June 20 ,2024)WS 335 (June 03, 2024 -July 18, 2024)WS 336 (July 8, 2024 - August 22, 2024)WS 337 (August 5, 2024 - September 19, 2024)WS 338 (September 3, 2024 - October 18, 2024)WS 339 (October 4, 2024 - November 18, 2024)WS 340 (November 4, 2024 - December 19, 2024)WS 341 (December 2, 2024 - January 16, 2025)WS 342 (January 13, 2025 - February 27, 2025)WS 343 (February 10, 2025 - March 27, 2025)WS 344 (March 3, 2025 - April 17, 2025)WS 345 (April 7, 2025 - May 22, 2025)WS 346 (May 5, 2025 - June 19 ,2025)WS 347 (June 9, 2025 -July 24, 2025)WS 348 (July 7, 2025 - August 21, 2025)WS 349 (August 4, 2025 - September 18, 2025)WS 350 (September 8, 2025 - October 23, 2025)WS 351 (October 3, 2025 - November 17, 2025)WS 352 (October 31, 2025 - December 15, 2025)WS 353 (December 1, 2025 - January 15, 2026) Add to cart All product details
Proficiency Testing - Hardness, potable water Item no. ERA-555 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 332 (March 4, 2024 - April 18, 2024)WS 333 (April 8, 2024 - May 23, 2024)WS 334 (May 6, 2024 - June 20 ,2024)WS 335 (June 03, 2024 -July 18, 2024)WS 336 (July 8, 2024 - August 22, 2024)WS 337 (August 5, 2024 - September 19, 2024)WS 338 (September 3, 2024 - October 18, 2024)WS 339 (October 4, 2024 - November 18, 2024)WS 340 (November 4, 2024 - December 19, 2024)WS 341 (December 2, 2024 - January 16, 2025)WS 342 (January 13, 2025 - February 27, 2025)WS 343 (February 10, 2025 - March 27, 2025)WS 344 (March 3, 2025 - April 17, 2025)WS 345 (April 7, 2025 - May 22, 2025)WS 346 (May 5, 2025 - June 19 ,2025)WS 347 (June 9, 2025 -July 24, 2025)WS 348 (July 7, 2025 - August 21, 2025)WS 349 (August 4, 2025 - September 18, 2025)WS 350 (September 8, 2025 - October 23, 2025)WS 351 (October 3, 2025 - November 17, 2025)WS 352 (October 31, 2025 - December 15, 2025)WS 353 (December 1, 2025 - January 15, 2026) Add to cart All product details
Proficiency Testing - Cyanide, potable water Item no. ERA-556 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 332 (March 4, 2024 - April 18, 2024)WS 333 (April 8, 2024 - May 23, 2024)WS 334 (May 6, 2024 - June 20 ,2024)WS 335 (June 03, 2024 -July 18, 2024)WS 336 (July 8, 2024 - August 22, 2024)WS 337 (August 5, 2024 - September 19, 2024)WS 338 (September 3, 2024 - October 18, 2024)WS 339 (October 4, 2024 - November 18, 2024)WS 340 (November 4, 2024 - December 19, 2024)WS 341 (December 2, 2024 - January 16, 2025)WS 342 (January 13, 2025 - February 27, 2025)WS 343 (February 10, 2025 - March 27, 2025)WS 344 (March 3, 2025 - April 17, 2025)WS 345 (April 7, 2025 - May 22, 2025)WS 346 (May 5, 2025 - June 19 ,2025)WS 347 (June 9, 2025 -July 24, 2025)WS 348 (July 7, 2025 - August 21, 2025)WS 349 (August 4, 2025 - September 18, 2025)WS 350 (September 8, 2025 - October 23, 2025)WS 351 (October 3, 2025 - November 17, 2025)WS 352 (October 31, 2025 - December 15, 2025)WS 353 (December 1, 2025 - January 15, 2026) Add to cart All product details
Proficiency Testing - o-Phosphate Nutrients, potable water Item no. ERA-558 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 332 (March 4, 2024 - April 18, 2024)WS 333 (April 8, 2024 - May 23, 2024)WS 334 (May 6, 2024 - June 20 ,2024)WS 335 (June 03, 2024 -July 18, 2024)WS 336 (July 8, 2024 - August 22, 2024)WS 337 (August 5, 2024 - September 19, 2024)WS 338 (September 3, 2024 - October 18, 2024)WS 339 (October 4, 2024 - November 18, 2024)WS 340 (November 4, 2024 - December 19, 2024)WS 341 (December 2, 2024 - January 16, 2025)WS 342 (January 13, 2025 - February 27, 2025)WS 343 (February 10, 2025 - March 27, 2025)WS 344 (March 3, 2025 - April 17, 2025)WS 345 (April 7, 2025 - May 22, 2025)WS 346 (May 5, 2025 - June 19 ,2025)WS 347 (June 9, 2025 -July 24, 2025)WS 348 (July 7, 2025 - August 21, 2025)WS 349 (August 4, 2025 - September 18, 2025)WS 350 (September 8, 2025 - October 23, 2025)WS 351 (October 3, 2025 - November 17, 2025)WS 352 (October 31, 2025 - December 15, 2025)WS 353 (December 1, 2025 - January 15, 2026) Add to cart All product details
QuiKResponse - PCBs in Oil Item no. ERA-563QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - New Jersey EPH in Soil Item no. ERA-564 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - New Jersey EPH in Soil Item no. ERA-564QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Massachusetts VPH in Water Item no. ERA-566 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Massachusetts EPH in Water Item no. ERA-567 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Massachusetts VPH in Soil Item no. ERA-568 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Total Petroleum Hydrocarbons (TPH) in Soil #1 Item no. ERA-570 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Total Petroleum Hydrocarbons (TPH) in Soil #2 Item no. ERA-571 Unit each 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 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) 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 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) 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 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) 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 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) 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 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) 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 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) Add to cart All product details
Proficiency Testing - Minerals, waste water Item no. ERA-581 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) 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 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) 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 350 (March 11, 202 - April 25, 2024)WP 351 (April 15, 2024 - May 30, 2024)WP 352 (May 13, 2024 - June 27, 2024)WP 353 (June 10, 2024 - July 25, 2024)WP 354 (July 15, 2024 - August 29, 2024)WP 355 (August 12, 2024 - September 26, 2024)WP 356 (September 9, 2024 - October 24, 2024)WP 357 (October 11, 2024 - November 25, 2024)WP 358 (November 11, 2024 - December 26, 2024)WP 359 (December 9, 2024 - January 23, 2025)WP 360 (January 21, 2025 - March 7, 2025)WP 361 (February 17, 2025 - April 3, 2025)WP 362 (March 10, 202 - April 24, 2025)WP 363 (April 14, 2025 - May 29, 2025)WP 364 (May 12, 2025 - June 26, 2025)WP 365 (June 16, 2025 - July 31, 2025)WP 366 (July 14, 2025 - August 28, 2025)WP 367 (August 11, 2025 - September 25, 2025)WP 368 (September 15, 2025 - October 30, 2025)WP 369 (October 10, 2025 - November 24, 2025)WP 370 (November 3, 2025 - December 18, 2025)WP 371 (December 8, 2025 - January 22, 2026) 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 354 (July 15, 2024 - August 29, 2024)WP 360 (January 21, 2025 - March 7, 2025)WP 366 (July 14, 2025 - August 28, 2025) 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