Proficiency Testing - Perchlorate Item no. ERA-1500 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) Add to cart Select to compare
Certified Reference Material - Solids, Concentrate, potable water (PotableWatR TM) Item no. ERA-5152 CAS Number 3 Analytes Unit each Analyte(s) Non-filterable residue (TSS) + 2 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Solids, Concentrate, potable water (PotableWatR TM) Item no. ERA-5152QR CAS Number 3 Analytes Unit each Analyte(s) Total suspended solids (TSS) + 2 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 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 Select to compare
Certified Reference Material - Inorganic Disinfection 2 Item no. ERA-5262 CAS Number 2 Analytes Unit each Analyte(s) Bromate + 1 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Inorganic Disinfection 2 Item no. ERA-5262QR CAS Number 2 Analytes Unit each Analyte(s) Bromate + 1 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Inorganic Disinfection 1 QC Item no. ERA-5272 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
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 - Inorganics PT (Extra Volume) Item no. ERA-528 CAS Number n/a Unit each Structural formula: n/a View all product details Price on request - + Add to cart Select to compare
Proficiency Testing - Mercury, potable water Item no. ERA-551 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) 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 Select to compare
Proficiency Testing - pH, potable water Item no. ERA-552 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) 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 Select to compare
Proficiency Testing - Hardness, potable water Item no. ERA-555 CAS Number 5 Analytes Unit each Analyte(s) Calcium (Ca) + 4 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) 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 Select to compare
Proficiency Testing - Cyanide, potable water Item no. ERA-556 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) 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 Select to compare
Proficiency Testing - Organic Carbon, potable water Item no. ERA-557 CAS Number 2 Analytes Unit each Analyte(s) Dissolved Organic Carbon (DOC) + 1 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) 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 Select to compare
Proficiency Testing - EDB/DBCP/TCP Item no. ERA-562 CAS Number 3 Analytes Unit each Analyte(s) 1,2,3-Trichloropropane (TCP) + 2 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WP 381 (October 16, 2026 - November 30, 2026) Add to cart Select to compare
Proficiency Testing - Metals, potable water Item no. ERA-590 CAS Number 19 Analytes Unit each Analyte(s) Aluminium (Al) + 18 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) 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 Select to compare
Proficiency Testing - Inorganics, potable water Item no. ERA-591 CAS Number 10 Analytes Unit each Analyte(s) Alkalinity as CaCO3 + 9 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) 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 Select to compare
Proficiency Testing - Turbidity, potable water Item no. ERA-592 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) 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 Select to compare
Proficiency Testing - Low-Level 1,2,3-TCP Item no. ERA-596 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) WS 366 (January 11, 2027 - February 25, 2027)WS 372 (July 12, 2027 - August 26, 2027) Add to cart Select to compare
QuiKResponse - Hexavalent Chromium, potable water (PotableWatR TM) Item no. ERA-658QR 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 - Vanadium, potable water (PotableWatR TM) Item no. ERA-660QR 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 - 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 - Color, Water Supply Item no. ERA-661CQR 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 - UV 254 Absorbance, potable water (PotableWatR TM) Item no. ERA-662QR 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 - Mercury, potable water (PotableWatR TM) Item no. ERA-666QR 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 - Organic Carbon, potable water (PotableWatR TM) Item no. ERA-669QR CAS Number 2 Analytes Unit each Analyte(s) Dissolved Organic Carbon (DOC) + 1 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Chloral Hydrate, potable water (PotableWatR TM) Item no. ERA-676 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 - Quality Control Product -Low-Level 1,2,3-TCP Item no. ERA-682 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 - Low-Level 1,2,3-TCP Item no. ERA-682QR 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 - Hardness, potable water (PotableWatR TM) Item no. ERA-693QR CAS Number 5 Analytes Unit each Analyte(s) Calcium (Ca) + 4 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Metals, potable water (PotableWatR TM) Item no. ERA-697QR CAS Number 19 Analytes Unit each Analyte(s) Aluminium (Al) + 18 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Inorganics, potable water (PotableWatR TM) Item no. ERA-698 CAS Number 9 Analytes Unit each Analyte(s) Alkalinity as CaCO3 + 8 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Inorganics, potable water (PotableWatR TM) Item no. ERA-698QR CAS Number 10 Analytes Unit each Analyte(s) Alkalinity as CaCO3 + 9 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Turbidity, potable water (PotableWatR TM) Item no. ERA-699QR 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 - Toxaphene, potable water (PotableWatR TM) Item no. ERA-700QR 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 - Halomethanes (THMs), potable water (PotableWatR TM) Item no. ERA-702QR CAS Number 4 Analytes Unit each Analyte(s) Bromodichloromethane + 3 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Regulated Volatiles, potable water (PotableWatR TM) Item no. ERA-703QR CAS Number 20 Analytes Unit each Analyte(s) 1,1,2-Trichloroethane + 19 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - EDB/DBCP/TCP, potable water (PotableWatR TM) Item no. ERA-706QR CAS Number 3 Analytes Unit each Analyte(s) 1,2,3-Trichloropropane + 2 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - PCBs as Decachlorobiphenyl, potable water (PotableWatR TM) Item no. ERA-708QR CAS Number 8 Analytes Unit each Analyte(s) Aroclor 1016 + 7 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Pesticides, potable water (PotableWatR TM) Item no. ERA-709 CAS Number 22 Analytes Unit each Analyte(s) Alachlor + 21 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
QuiKResponse - Pesticides, potable water (PotableWatR TM) Item no. ERA-709QR CAS Number 22 Analytes Unit each Analyte(s) Alachlor + 21 more + Structural Formula + View all product details Price on request - + 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) Add to cart Select to compare
Proficiency Testing - Regulated Volatiles, potable water Item no. ERA-840 CAS Number 19 Analytes Unit each Analyte(s) 1,1,2-Trichloroethane + 18 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) 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 Select to compare
Proficiency Testing - Toxaphene, potable water Item no. ERA-844 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) 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 Select to compare
Proficiency Testing - Semivolatiles #1, potable water Item no. ERA-848 CAS Number 23 Analytes Unit each Analyte(s) Acenaphthene + 22 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) 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 Select to compare
Certified Reference Material - Gasoline Additives, potable water (PotableWatR TM) Item no. ERA-909 CAS Number 5 Analytes Unit each Analyte(s) Diisopropylether + 4 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Uranium, potable water (PotableWatR TM) Item no. ERA-930 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 - Corrosivity, potable water (PotableWatR TM) Item no. ERA-980 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 - Cyanide, potable water (PotableWatR TM) Item no. ERA-983 CAS Number 3 Analytes Unit each Analyte(s) Cyanide + 2 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare