Proficiency Testing - Ammonia as N Item no. ERA-1319 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 369 (April 12, 2027 - May 27, 2027)WS 372 (July 12, 2027 - August 26, 2027)WS 378 (January 10, 2028 - February 24, 2028)WS 381 (April 10, 2028 - May 25, 2028)WS 384 (July 10, 2028 - August 24, 2028)WS 390 (January 8, 2029 - February 22, 2029)WS 393 (April 9, 2029 - May 24, 2029)WS 396 (July 9, 2029 - August 23, 2029) Add to cart Select to compare
Certified Reference Material - Quality Control Product -Ammonia as N Item no. ERA-1359 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 - Ammonia as N Item no. ERA-1359QR 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 - 1,4-Dioxane Item no. ERA-272 CAS Number n/a Unit each Structural formula: n/a 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)WS 378 (January 10, 2028 - February 24, 2028)WS 384 (July 10, 2028 - August 24, 2028)WS 390 (January 8, 2029 - February 22, 2029)WS 396 (July 9, 2029 - August 23, 2029) Add to cart Select to compare
Proficiency Testing - 1,4-Dioxane Item no. ERA-461 CAS Number n/a Unit each Structural formula: n/a View all product details Price on request - + Participation round: Round ID (Opens - Closes) SOIL 137 (January 25, 2027 - March 11, 2027)SOIL 139 (July 26, 2027 - September 9, 2027)SOIL 141 (January 24, 2028 - March 9, 2028)SOIL 143 (July 24, 2028 - September 7, 2028)SOIL 145 (January 22, 2029 - March 8, 2029)SOIL 147 (July 23, 2029 - September 6, 2029) Add to cart Select to compare
Certified Reference Material - 1,4-Dioxane Item no. ERA-538 CAS Number n/a Unit each Structural formula: n/a View all product details Price on request - + Add to cart Select to compare
QuiKResponse - 1,4-Dioxane Item no. ERA-538QR CAS Number n/a Unit each Structural formula: n/a View all product details Price on request - + Add to cart Select to compare
Certified Reference Material - 1,4-Dioxane Item no. ERA-689 CAS Number n/a Unit each Structural formula: n/a View all product details Price on request - + Add to cart Select to compare
QuiKResponse - 1,4-Dioxane Item no. ERA-689QR CAS Number n/a Unit each Structural formula: n/a View all product details Price on request - + Add to cart Select to compare