Certified Reference Material - Haloacetic Acids (HAA), potable water (PotableWatR TM) Item no. ERA-684 Unit each 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 - EDB/DBCP/TCP, potable water (PotableWatR TM) Item no. ERA-706QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - Pesticides, potable water (PotableWatR TM) Item no. ERA-709 Unit each Analytes Select to compare Price on request - + Add to cart All product details
Certified Reference Material - pH, potable water (PotableWatR TM) Item no. ERA-779 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
Certified Reference Material - Surfactants-MBAS, potable water (PotableWatR TM) Item no. ERA-784 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
Proficiency Testing - Regulated Volatiles, potable water Item no. ERA-840 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 - Halomethanes (THMs), potable water Item no. ERA-842 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 - Carbamate/Carbamoxyloxime Pesticides Item no. ERA-846 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 - Semivolatiles #1, potable water Item no. ERA-848 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 - Semivolatiles #2 Herbicides Item no. ERA-849 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 - Chloral Hydrate, potable water Item no. ERA-853 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 360 (July 13, 2026 - August 27, 2026)WS 366 (January 11, 2027 - February 25, 2027)WS 372 (July 12, 2027 - August 26, 2027) Add to cart All product details
Proficiency Testing - Color, Water Supply Item no. ERA-859C Unit 30 mL Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 357 (April 13, 2026 - May 28, 2026)WS 360 (July 13, 2026 - August 27, 2026)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) Add to cart All product details
Proficiency Testing - Surfactants-MBAS, potable water Item no. ERA-901 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 357 (April 13, 2026 - May 28, 2026)WS 360 (July 13, 2026 - August 27, 2026)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) Add to cart All product details
Proficiency Testing - Silica, potable water Item no. ERA-902 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 357 (April 13, 2026 - May 28, 2026)WS 360 (July 13, 2026 - August 27, 2026)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) Add to cart All product details
Proficiency Testing - Perchlorate, potable water Item no. ERA-903 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 357 (April 13, 2026 - May 28, 2026)WS 360 (July 13, 2026 - August 27, 2026)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) Add to cart All product details
Proficiency Testing - UV 254 Absorbance, potable water Item no. ERA-904 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 357 (April 13, 2026 - May 28, 2026)WS 360 (July 13, 2026 - August 27, 2026)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) Add to cart All product details
Proficiency Testing - Gasoline Additives, potable water Item no. ERA-905 Unit each Analytes Select to compare Price on request - + Participation round: Round ID (Opens - Closes) WS 357 (April 13, 2026 - May 28, 2026)WS 360 (July 13, 2026 - August 27, 2026)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) Add to cart All product details
Certified Reference Material - Gasoline Additives, potable water (PotableWatR TM) Item no. ERA-909 Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Gasoline Additives, potable water (PotableWatR TM) Item no. ERA-909QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Perchlorate, potable water (PotableWatR TM) Item no. ERA-910QR Unit each Analytes Select to compare Price on request - + Add to cart All product details
QuiKResponse - Cyanide, potable water (PotableWatR TM) Item no. ERA-983QR Unit each Analytes Select to compare Price on request - + Add to cart All product details