Supplier: Merck

Toxaphene in Soil - PT, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Lead on Filter Paper, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

TPH in Soil - PT, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Diquat/Glyphosate/Paraquat - WS, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Mercury in Impinger Solution, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

UV 254 - WS, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Particulate Matter in Impinger Solution, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Gas Chromatography <621> PT, Proficiency Testing Material

Supplier: Merck

Antibiotics - IR Identification PT, Proficiency Testing Material

Supplier: Merck

Residual Solvents Class 1 PT, Proficiency Testing Material

Supplier: Merck

Pesticides 2 - WP, Supelco®, Proficiency Testing Material, 1 mL for dilution to 1L, : N/A

Supplier: Merck

Chlordane (Total) - WP, Supelco®, Proficiency Testing Material, Concentrate for dilution to 1L, : N/A

Supplier: Merck

Vitamins - IR Identification PT, Proficiency Testing Material

Supplier: Merck

Oil and Grease in Seawater - Whole Volume - WP, Proficiency Testing Material

Supplier: Merck

VOAS in Soil - Low Level - PT, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Nitrosamines/Nitroaromatics - WP, Supelco®, Proficiency Testing Material, Concentrate for dilution to 1L, : N/A

Supplier: Merck

Organophosphorus Pesticides (Low Level) - PT, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Melting Range PT, Proficiency Testing Material

Supplier: Merck

STLC Metals CA-WET in Soil-PT, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Total Organic Carbon (TOC) PT, Proficiency Testing Material

Supplier: Merck

Pesticides 1 - WP, Supelco®, Proficiency Testing Material, 1 mL for dilution up to 1L, : N/A

Supplier: Merck

TSS/pH (whole volume) in Seawater - WS, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Residual Solvents Class IIA PT, Proficiency Testing Material

Supplier: Merck

Organochlorine Pesticides Ampule 2 - WS, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Sulfuric Acid in Impinger Solution, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Simple Nutrients in Seawater - Whole Volume - WP, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

PAHs (Low Level) - WP, Supelco®, Proficiency Testing Material, Concentrate for dilution to 1L, : N/A

Supplier: Merck

Trace Metals 2 in Seawater - Whole Volume - WP, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Complex Nutrients in Seawater - Whole Volume - WP, Supelco®, Proficiency Testing Material, : N/A

Supplier: Merck

Suitable for 791 per USP. Proficiency Testing Kit containing three samples ranging from pH 5,0 to 10,00.