Proficiency Testing - Ammonia in Impinger Solution Item no. ERA-1045 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) 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) Add to cart Select to compare
Certified Reference Material - Metals on Filter Paper Item no. ERA-1125 CAS Number 16 Analytes Unit each Analyte(s) Antimony (Sb) + 15 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Metals in Impinger Solution Item no. ERA-1126 CAS Number 16 Analytes Unit each Analyte(s) Antimony (Sb) + 15 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - Mercury on Filter Paper Item no. ERA-1127 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 - Solids, Concentrate, waste water Item no. ERA-4030 CAS Number 3 Analytes Unit each Analyte(s) Total suspended solids (TSS) + 2 more + Structural Formula + View all product details Price on request - + Participation round: Round ID (Opens - Closes) WP 380 (September 14, 2026 - October 29, 2026)WP 381 (October 16, 2026 - November 30, 2026)WP 382 (November 6, 2026 - December 21, 2026)WP 383 (December 14, 2026 - January 28, 2027) Add to cart Select to compare
Certified Reference Material - TCLP Metals in Soil, priority pollutant (PriorityPollutnT TM) Item no. ERA-544 CAS Number 12 Analytes Unit each Analyte(s) Antimony (Sb) + 11 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Proficiency Testing - Chlorinated Acid Herbicides in Soil, priority pollutant Item no. ERA-626 CAS Number 18 Analytes Unit each Analyte(s) 2,4,5-T + 17 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) Add to cart Select to compare
Certified Reference Material - Low-Level Nitroaromatics & Nitramines, priority pollutant (PrPollutnT TM) Item no. ERA-677 CAS Number 14 Analytes Unit each Analyte(s) 1,3,5-Trinitrobenzene + 13 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare
Acetate - 1000 mg/L Item no. ERA-78202 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 - Halomethanes (THMs), potable water Item no. ERA-842 CAS Number 4 Analytes Unit each Analyte(s) Bromodichloromethane + 3 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 - Pesticides, (PotableWatR TM), potable water Item no. ERA-850 CAS Number 22 Analytes Unit each Analyte(s) Alachlor + 21 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
Total Organic Carbon (TOC) - 1000mg/L Item no. ERA-978 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
PFAS Secondary Source Std., Drinking water Item no. ERA-PFAS10002 CAS Number 29 Analytes Unit each Analyte(s) 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) + 28 more + Structural Formula + View all product details Price on request - + Add to cart Select to compare