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
Proficiency Testing - Solids, WP, waste water Item no. ERA-241 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 - Glycols in Water Item no. ERA-271 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 348 (January 15, 2024 -February 29, 2024)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
Certified Reference Material - Demand QC plus QC Standard Item no. ERA-4013 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
Proficiency Testing - Solids, Concentrate, waste water Item no. ERA-4030 Unit 24 mL Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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
Certified Reference Material - Solids, Concentrate, waste water (WasteWatR TM) Item no. ERA-4032 Unit each 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
Proficiency Testing - Oil & Grease Concentrate, waste water Item no. ERA-4120 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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
Certified Reference Material - Oil & Grease Concentrate, waste water (WasteWatR TM) Item no. ERA-4122 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Hexavalent Chromium QC plus QC Standard Item no. ERA-4183 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Proficiency Testing - Uranium, PT Item no. ERA-4400 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 348 (January 15, 2024 - February 29, 2024)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 - Volatile Aromatics Item no. ERA-4450 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 348 (January 15, 2024 - February 29, 2024)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
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 - Nitrogen Pesticides, priority pollutant Item no. ERA-487 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 348 (January 15, 2024 - February 29, 2024)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 - PAH-GC & GCMS Item no. ERA-4880 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 348 (January 15, 2024 - February 29, 2024)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
Certified Reference Material - PAH-GC & GCMS Item no. ERA-4882 Unit each Analytes Select to compare Price on request - + 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 348 (January 15, 2024 - February 29, 2024)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
Certified Reference Material - Solids, waste water (WasteWatR TM) Item no. ERA-499 Unit each Analytes Select to compare Price on request - + 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 349 (February 12, 2024 - March 28, 2024)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
Certified Reference Material - Lithium Item no. ERA-4992 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Total Residual Chlorine, waste water (WasteWatR TM) Item no. ERA-501 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Cyanide, waste water (WasteWatR TM) Item no. ERA-502 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Simple Nutrients, waste water (WasteWatR TM) Item no. ERA-505 Unit each 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
Certified Reference Material - Hardness, waste water (WasteWatR TM) Item no. ERA-507 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
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
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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 - Total Residual Chlorine, waste water Item no. ERA-587 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 - Total Cyanide, waste water Item no. ERA-588 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 - Total Phenolics (4-AAP), waste water Item no. ERA-589 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WP 347 (December 11, 2023 - January 25, 2024)WP 348 (January 15, 2024 - February 29, 2024)WP 349 (February 12, 2024 - March 28, 2024)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 348 (January 15, 2024 - February 29, 2024)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
Certified Reference Material - Total Petroleum Hydrocarbons (TPH) in Water #2 Item no. ERA-601 Unit each Analytes Select to compare Price on request - + Add to cart All product details